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DATACENTER ERROR!!! Внимание! Авария в датацентре!!


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Diagnosis and repair



NOTE:
This test is only for vehicles equipped with internal alternator/regulator system (IAR).

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If the voltmeter indicated more than 2.5 volts above base voltage in the no load test, follow these procedures:

1.With the ignition in the run position (engine not running), connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead first to the alternator output connection at the starter solenoid and then to the regulator A screw head.
2.If the voltage difference between the two locations is greater than 0.5 volts, service the A wiring circuit to eliminate the high resistance condition indicated by the excessive voltage drop.
3.If the over voltage condition still exists, check for loose regulator and alternator grounding screws. Tighten loose regulator grounding screws to 1.7-2.8 Nm (15-25 in lb).
4.If the over voltage condition still exists, connect the voltmeter negative lead to the alternator rear housing. With the ignition off, contact the voltmeter positive lead first to the regulator A screw head and then to the regulator F screw head. Different voltage readings at the two screw heads indicate a malfunctioning regulator, grounded brush lead or a grounded rotor coil. Service the entire integral alternator/regulator assembly.
5.If the same voltage reading (battery voltage) is obtained at both screw heads in Step 4, and there is no high resistance in the ground or A+ circuit, replace the regulator.
NOTE:
This test is only for vehicles equipped with internal alternator/regulator system (IAR).

AlternatorAlternator


If the voltmeter indicated more than 2.5 volts above base voltage in the no load test, follow these procedures:

1.With the ignition in the run position (engine not running), connect the voltmeter negative lead to the alternator rear housing. Contact the voltmeter positive lead first to the alternator output connection at the starter solenoid and then to the regulator A screw head.
2.If the voltage difference between the two locations is greater than 0.5 volts, service the A wiring circuit to eliminate the high resistance condition indicated by the excessive voltage drop.
3.If the over voltage condition still exists, check for loose regulator and alternator grounding screws. Tighten loose regulator grounding screws to 1.7-2.8 Nm (15-25 in lb).
4.If the over voltage condition still exists, connect the voltmeter negative lead to the alternator rear housing. With the ignition off, contact the voltmeter positive lead first to the regulator A screw head and then to the regulator F screw head. Different voltage readings at the two screw heads indicate a malfunctioning regulator, grounded brush lead or a grounded rotor coil. Service the entire integral alternator/regulator assembly.
5.If the same voltage reading (battery voltage) is obtained at both screw heads in Step 4, and there is no high resistance in the ground or A+ circuit, replace the regulator.



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