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


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Diagnosis and repair



DIGITAL VOLT/OHM METER

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Use a Digital Volt-Ohm Meter (DVOM) with a minimum 10 mega-ohms internal impedance when testing any PCM or related components, unless use of an analog meter is specified by a testing procedure. (Analog meters have low internal impedance and cause circuit "loading" in low voltage circuits, resulting in inaccurate measurements and possible damage to components). Use of a DVOM is necessary to obtain accurate measurements and avoid damaging low voltage computer circuits and components.


TESTING PROCEDURES

Always follow recommended testing procedures. Never ground or apply voltage to a circuit unless specified by a testing procedure. PCMs, i.e. Engine Controllers, Anti-lock Brake Controllers etc., provide a regulated constant low voltage source to some circuits, which may require a minimum resistance (impedance) to operate. Directly grounding or applying battery power to these circuits could damage the module and cause a system failure.


DIGITAL VOLT/OHM METER

Digital Volt OhmmeterDigital Volt Ohmmeter


Use a Digital Volt-Ohm Meter (DVOM) with a minimum 10 mega-ohms internal impedance when testing any PCM or related components, unless use of an analog meter is specified by a testing procedure. (Analog meters have low internal impedance and cause circuit "loading" in low voltage circuits, resulting in inaccurate measurements and possible damage to components). Use of a DVOM is necessary to obtain accurate measurements and avoid damaging low voltage computer circuits and components.


TESTING PROCEDURES

Always follow recommended testing procedures. Never ground or apply voltage to a circuit unless specified by a testing procedure. PCMs, i.e. Engine Controllers, Anti-lock Brake Controllers etc., provide a regulated constant low voltage source to some circuits, which may require a minimum resistance (impedance) to operate. Directly grounding or applying battery power to these circuits could damage the module and cause a system failure.





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