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Diagnosis and repair



NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

{tag}1177334534@

1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

{tag}1177338306@

2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

{tag}1177342389@

4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


{tag}1177344836@

5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

{tag}1177348116@


6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

AlternatorAlternator


1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

{tag}1177338306@

2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

{tag}1177342389@

4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


{tag}1177344836@

5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

{tag}1177348116@


6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

{tag}1177334534@

1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

AlternatorAlternator


2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

{tag}1177342389@

4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


{tag}1177344836@

5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

{tag}1177348116@


6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

AlternatorAlternator


1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

AlternatorAlternator


2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

{tag}1177342389@

4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


{tag}1177344836@

5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

{tag}1177348116@


6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

{tag}1177334534@

1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

{tag}1177338306@

2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

AlternatorAlternator


4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


{tag}1177344836@

5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

{tag}1177348116@


6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

AlternatorAlternator


1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

{tag}1177338306@

2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

AlternatorAlternator


4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


{tag}1177344836@

5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

{tag}1177348116@


6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

{tag}1177334534@

1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

AlternatorAlternator


2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

AlternatorAlternator


4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


{tag}1177344836@

5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

{tag}1177348116@


6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

AlternatorAlternator


1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

AlternatorAlternator


2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

AlternatorAlternator


4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


{tag}1177344836@

5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

{tag}1177348116@


6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

{tag}1177334534@

1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

{tag}1177338306@

2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

{tag}1177342389@

4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


Jumper WireJumper Wire


5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

{tag}1177348116@


6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

AlternatorAlternator


1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

{tag}1177338306@

2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

{tag}1177342389@

4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


Jumper WireJumper Wire


5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

{tag}1177348116@


6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

{tag}1177334534@

1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

AlternatorAlternator


2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

{tag}1177342389@

4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


Jumper WireJumper Wire


5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

{tag}1177348116@


6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

AlternatorAlternator


1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

AlternatorAlternator


2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

{tag}1177342389@

4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


Jumper WireJumper Wire


5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

{tag}1177348116@


6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

{tag}1177334534@

1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

{tag}1177338306@

2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

AlternatorAlternator


4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


Jumper WireJumper Wire


5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

{tag}1177348116@


6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

AlternatorAlternator


1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

{tag}1177338306@

2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

AlternatorAlternator


4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


Jumper WireJumper Wire


5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

{tag}1177348116@


6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

{tag}1177334534@

1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

AlternatorAlternator


2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

AlternatorAlternator


4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


Jumper WireJumper Wire


5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

{tag}1177348116@


6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

AlternatorAlternator


1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

AlternatorAlternator


2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

AlternatorAlternator


4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


Jumper WireJumper Wire


5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

{tag}1177348116@


6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

{tag}1177334534@

1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

{tag}1177338306@

2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

{tag}1177342389@

4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


{tag}1177344836@

5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

Jumper WireJumper Wire



6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

AlternatorAlternator


1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

{tag}1177338306@

2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

{tag}1177342389@

4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


{tag}1177344836@

5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

Jumper WireJumper Wire



6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

{tag}1177334534@

1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

AlternatorAlternator


2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

{tag}1177342389@

4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


{tag}1177344836@

5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

Jumper WireJumper Wire



6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

AlternatorAlternator


1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

AlternatorAlternator


2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

{tag}1177342389@

4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


{tag}1177344836@

5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

Jumper WireJumper Wire



6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

{tag}1177334534@

1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

{tag}1177338306@

2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

AlternatorAlternator


4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


{tag}1177344836@

5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

Jumper WireJumper Wire



6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

AlternatorAlternator


1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

{tag}1177338306@

2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

AlternatorAlternator


4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


{tag}1177344836@

5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

Jumper WireJumper Wire



6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

{tag}1177334534@

1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

AlternatorAlternator


2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

AlternatorAlternator


4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


{tag}1177344836@

5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

Jumper WireJumper Wire



6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

AlternatorAlternator


1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

AlternatorAlternator


2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

AlternatorAlternator


4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


{tag}1177344836@

5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

Jumper WireJumper Wire



6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

{tag}1177334534@

1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

{tag}1177338306@

2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

{tag}1177342389@

4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


Jumper WireJumper Wire


5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

Jumper WireJumper Wire



6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

AlternatorAlternator


1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

{tag}1177338306@

2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

{tag}1177342389@

4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


Jumper WireJumper Wire


5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

Jumper WireJumper Wire



6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

{tag}1177334534@

1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

AlternatorAlternator


2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

{tag}1177342389@

4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


Jumper WireJumper Wire


5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

Jumper WireJumper Wire



6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

AlternatorAlternator


1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

AlternatorAlternator


2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

{tag}1177342389@

4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


Jumper WireJumper Wire


5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

Jumper WireJumper Wire



6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

{tag}1177334534@

1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

{tag}1177338306@

2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

AlternatorAlternator


4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


Jumper WireJumper Wire


5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

Jumper WireJumper Wire



6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

AlternatorAlternator


1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

{tag}1177338306@

2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

AlternatorAlternator


4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


Jumper WireJumper Wire


5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

Jumper WireJumper Wire



6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

{tag}1177334534@

1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

AlternatorAlternator


2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

AlternatorAlternator


4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


Jumper WireJumper Wire


5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

Jumper WireJumper Wire



6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.
NOTE:
This test only applies to vehicles equipped with internal alternator/regulator systems (IAR).

If the voltmeter did not indicate more than 0.5 volts above the base voltage, follow these procedures:

AlternatorAlternator


1.Disconnect the wiring plug from the regulator and connect an ohmmeter between the regulator A and F terminal screws. The meter should indicate more than 2.4 ohms. If less than 2.4 ohms is indicated, service the integral alternator/regulator unit for a failed regulator and check the alternator for a shorted rotor or field circuit. Perform the load test.

CAUTION:Do not replace the regulator before a shorted rotor coil or field circuit has been serviced. The result could be another damaged regulator.

AlternatorAlternator


2.If the above ohmmeter reading is greater than 2.4 ohms, reconnect the regulator wiring plug and connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead to the regulator A terminal screw. The meter should indicate battery voltage. If there is no voltage, service the A wiring circuit. Perform the load test after servicing.
3.If the voltmeter indicates battery voltage, connect voltmeter ground lead to alternator rear housing. With the ignition switch in OFF position, contact voltmeter positive lead to regulator F terminal screw. The meter should indicate battery voltage. If there is no voltage, service integral alternator/regulator unit for an open field circuit. Perform load test after servicing.

AlternatorAlternator


4.If voltmeter indicates battery voltage, connect voltmeter negative lead to alternator rear housing. Turn the ignition switch to run (engine off) and contact voltmeter positive lead to regulator F terminal screw. The voltmeter should indicate 1.5 volts or less. If more than 1.5 volts is indicated, perform I circuit tests and service I circuit if needed. If I circuit checks normal, replace regulator if needed and perform load test.


Jumper WireJumper Wire


5.If 1.5 volts or less is indicated, disconnect alternator wiring plug and connect a set of 12-gauge jumper wires between alternator B(+) terminal blades and mating wiring connector terminals. Perform load test, but connect voltmeter positive to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt above base voltage, service alternator to starter relay wiring. Repeat load test, measuring voltage at battery cable clamps after servicing.

Jumper WireJumper Wire



6.If voltage does not rise more than 0.5 volt above base voltage, connect a jumper wire from alternator rear housing to regulator F terminal. Repeat load test with voltmeter positive lead connected to one of B(+) jumper wire terminals. If voltage rises more than 0.5 volt, replace regulator.
7.If voltage does not rise more than 0.5 volt, service the alternator.



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