2007 Grand Cherokee WK Factory Service Manual 8 - ELECTRICAL

DIAGNOSIS AND TESTING

REAR FOG LAMP SWITCH

WARNING: To avoid personal injury or death, on vehicles equipped with airbags, disable the supplemental restraint system before attempting any steering wheel, steering column, airbag, seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the supplemental restraint system. Failure to take the proper precautions could result in accidental airbag deployment.




1. Disconnect and isolate the battery negative cable.
2. Disconnect the instrument panel wire harness connector from the upper instrument panel switch pod.
3. Using an ohmmeter, perform a continuity test at the terminal pins in the switch pod connector receptacle between pins 6 and 8. There should be momentary continuity each time the switch push button is depressed.
4. If the switch fails the continuity test, replace the ineffective upper switch pod as required. (Refer to 8 - ELECTRICAL/INSTRUMENT CLUSTER/INSTRUMENT PANEL SWITCH POD - REMOVAL - UPPER).