Circuit/System Testing

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

Ignition OFF, disconnect the X1 harness connector at the S64P Seat Adjuster Switch - Passenger, ignition ON.
Verify the scan tool Passenger Seat Horizontal Switch parameter is Inactive.
- If not Inactive
1. Ignition OFF, disconnect the X6 harness connector at the K40D Seat Memory Control Module - Driver, ignition ON.
2. Test for less than 1 V between each signal circuit terminal listed below and ground.
  - Horizontal forward terminal 3
  - Horizontal rearward terminal 9
  - If 1 V or greater, repair the short to voltage on the circuit.
  - If less than 1 V, replace the K40D Seat Memory Control Module - Driver.
- If Inactive
Install a 3 A fused jumper wire between each signal circuit terminal listed below and the B+ circuit terminal 10 one at a time.
- Horizontal forward terminal 3
- Horizontal rearward terminal 9
Verify the scan tool Passenger Seat Horizontal Switch parameter is Forward/Rearward.
- If not Forward/Rearward
1. Ignition OFF, remove the jumper wire, disconnect the X6 harness connector at the K40D Seat Memory Control Module - Driver.
2. Test for infinite resistance between the signal circuit and ground.
  - If less than infinite resistance, repair the short to ground on the circuit.
  - If infinite resistance
3. Test for less than 2 Ω in the signal circuit end to end.
  - If 2 Ω or greater, repair the open/high in the circuit.
  - If less than 2 Ω, replace the K40D Seat Memory Control Module - Driver.
- If Forward/Rearward
Test or Replace the S64P Seat Adjuster Switch - Passenger.