Heated and Cooled Seat Switch
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the X4 harness connector at the appropriate door lock/window switch.
- Test for infinite resistance between the low reference circuit terminal 4 and the signal terminals listed below the with the switch in the open position.
- Seat back only mode switch terminal 7
- Seat back cushion heat switch terminal 6
- Seat cool switch terminal 3
- If not the specified value, replace the heated and cooled seat switch.
- Test for less than 2 Ω between the low reference circuit terminal 4 and the signal terminals listed below with the appropriate switch in the closed position.
- Seat back only mode switch terminal 7
- Seat back cushion heat switch terminal 6
- Seat cool switch terminal 3
- If greater than the specified range, replace the heated and cooled seat 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 terminal listed below. The appropriate indicator should illuminate.
- Seat back only mode indicator terminal 11
- Seat cool mode indicator terminal 12
- Seat back and cushion indicator terminal 10
- Low temperature indicator terminal 9
- Medium temperature indicator terminal 1
- High temperature indicator terminal 2
- If any indicator does not illuminate, replace the heated and cooled seat switch.