Grand Cherokee 2WD V8-4.7L VIN J (2004)
7. Check for continuity between the seat heater switch sensor ground circuit cavities of the instrument panel wire harness connector for the in
operative heated seat switch(es) and the 22-way instrument panel wire harness connector for the BCM. There should be continuity. If OK, go to
Step 8. If not OK, repair the open seat heater switch sensor ground circuit as required.
8. Check for continuity between the seat heater switch mux circuit cavity of the instrument panel wire harness connector for the inoperative heated
seat switch and a good ground. There should be no continuity. If OK, go to Step 9. If not OK, repair the shorted seat heater switch mux circuit as
required.
9. Check for continuity between the seat heater switch mux circuit cavity of the instrument panel wire harness connector for the inoperative heated
seat switch and the 22-way instrument panel wire harness connector for the BCM. There should be continuity. If OK, use a DRB scan tool and the
proper Diagnostic Procedures to test the BCM. If not OK, repair the open seat heater switch mux circuit as required.
