Component Testing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Heated Seat Switch
- Ignition OFF, disconnect the X4 harness connector at the door lock/window switch.
- Test for infinite resistance between the signal circuits listed below and the low reference circuit terminal 4 with the switch in the open position.
- Seat back and cushion heat mode terminal 6
- Seat back only mode terminal 7
- If not the specified value, replace the heated seat switch.
- Test for less than 2 Ω between the signal circuits listed below and the low reference circuit terminal 4 with the switch in the closed position.
- Seat back and cushion heat mode terminal 6
- Seat back only mode terminal 7
- If greater than the specified range for any of the tests, replace the heated seat switch.
Heated Seat Switch Indicators
- Ignition OFF, disconnect the X4 harness connector at the door lock/window switch.
- Connect a 3 A fused jumper wire between the low reference circuit terminal 4 and ground.
- Connect a test lamp between B+ and each control circuit listed below. The appropriate indicator should illuminate.
- Seat back and cushion mode indicator terminal 10
- Seat back only mode indicator terminal 11
- Low heat indicator terminal 9
- Medium heat indicator terminal 1
- High heat indicator terminal 2
- If any indicator does not illuminate, replace the heated seat switch.
- If all indicators illuminate, replace the door lock/window switch.