Test M: The Heated Seats Are Inoperative - Driver And Front Passenger

PINPOINT TEST M: THE HEATED SEATS ARE INOPERATIVE - DRIVER AND FRONT PASSENGER

Normal Operation
The heated seat module receives ignition voltage feed on circuit CBP35 (YE/GY), battery voltage feed on circuit SBB22 (BN/RD) and is supplied ground on circuit GD148 (BK/YE). When ignition switched power is supplied and the driver heated seat button on the heating ventilation and air-conditioning (HVAC) module is pressed, a momentary ground signal is sent to the heated seat module to command the system on or off. Upon receiving a signal, the heated seat module will decrease one setting (the sequence is high, low, off, high, etc.). The heated seat module is designed to remain on, heating the seat and maintaining temperature until switched off or a 10-minute time-out period occurs.

This pinpoint test is intended to diagnose the following:
- Fuse(s)
- Wiring, terminals or connectors
- Backrest or cushion heater mat
- Heated seat module
- HVAC module

M1-M2: