Diagnosis And Testing - Passenger Heated Seat Switch: Notes

Inspect the Heated Seat Switch for apparent damage or sticking/binding condition, replace if necessary. Refer to Heated Seat Switch Removal and Installation. For circuit description and diagrams, refer to SYSTEM WIRING DIAGRAMS .

1. Remove the heated seat switch from its mounting location. Refer to Heated Seat Switch Removal and Installation.
2. Using an ohmmeter, check the ground circuit cavity of the heated seat switch electrical connector for a good continuity to ground. If OK, go to Step 3. If not OK, repair the open ground circuit as required.
3. Turn the ignition switch to the RUN position. Using an voltmeter, check the 12v (B+) circuit cavity of the heated seat switch electrical connector for 12v. If OK, go to Step 4. If not OK, repair the open or shorted 12v B+ circuit as required.
4. Turn the ignition switch OFF. Using an ohmmeter, check the continuity between pin 4 and pin 6 (Figure ) of the heated seat switch, while in its neutral, LO and HI position. Measure the resistance between the two pins and compare with the chart below (Figure and Figure ). If the readings do not correspond to those in the heated Seat Switch Continuity table, replace the heated seat switch.