Test B: Heated Seat Always On
- If power seat/heated seats systems diagnostic system check has been performed, go to next step. If power seat/heated seats systems diagnostic system check has not been performed, go to POWER SEAT/HEATED SEATS SYSTEMS DIAGNOSTIC SYSTEM CHECK
under SELF-DIAGNOSTIC SYSTEM.
- Disconnect heated seat switch 8-pin harness connector. Heated seat switch is located in center console switchbank. Using test light connected to ground, probe heated seat switch harness connector terminals "D" (Light Blue wire) and "E" (Light Blue/Black wire). See Fig 1
. If test light illuminates, go to next step. If test light does not illuminate, go to step 5
.
- Check for and repair a short to voltage in heated seat switch signal circuits. See WIRING DIAGRAMS
. If no problem is found, go to next step. If problem is found, repair as necessary and go to step 6
.
- Replace heated seat switch. See HEATED SEAT SWITCH
under REMOVAL & INSTALLATION. After repairs are made, go to step 6
.
- Replace heated seat cushion heater element. See HEATED SEAT CUSHION HEATER ELEMENT/MODULE
under REMOVAL & INSTALLATION. After repairs are made, go to next step.
- Operate system to verify fault no longer exists. If fault still exists, go to step 2
.
Courtesy of GENERAL MOTORS CORP.