Operation CHARM: Car repair manuals for everyone.
Hosted by mcallihan.com

Test N: The Passenger Heated Seat Is Inoperative - Does Not Operate In Low

PINPOINT TEST N: THE PASSENGER HEATED SEAT IS INOPERATIVE - DOES NOT OPERATE IN LOW


N1:






N1-N3:






N3 Continued:






Normal Operation
The driver heated seat module receives battery voltage feed on circuit 1048 (LB/WH) and ignition voltage feed on circuit 1040 (RD/BK), and is supplied ground on circuit 676 (PK/OG). When the heated seat control switch is pressed with the ignition switch in RUN or START, a ground signal is sent to the heated seat module on circuit 1256 (WH/YE) to command the system ON or OFF in LOW heat mode.

Possible Causes
A passenger heated seat that does not operate in LOW can be caused by:
- faulty wiring, terminals or connectors.
- a faulty heated seat switch.
- a faulty heated seat module.