Generator Lamp Circuit

Generator Lamp Control Circuit:

PCM Controlled Generator:

Diagnostic Aids

For diagnosis of the instrument panel, perform the System Check in the Instrument Panel Section. Instrument Panel, Gauges and Warning Indicators

Check for the following conditions:

^ Poor connection at PCM or Generator. Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection.

^ Damaged harness. Inspect the wiring harness for damage. If the harness appears to be OK, disconnect the PCM and turn the ignition ON. Observe a voltmeter connected to the affected PCM circuit while moving connectors and wiring harnesses related to the PCM circuit. A change in voltage will indicate the location of the fault.


Test Description

7. This vehicle is equipped with a PCM which utilizes an Electrically Erasable Programmable Read Only Memory (EEPROM). When the PCM is being replaced, the new PCM must be programmed. Refer to PCM Replacement and Programming Procedures in Powertrain Control Module. Engine Control Module