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 harness connector at the appropriate easy entry switch listed below, ignition ON.
- S115D Easy Entry Switch - Driver Seat
- S115P Easy Entry Switch - Passenger Seat
Verify a test lamp illuminates between the B+ circuit terminal A and ground.
- If the test lamp does not illuminate
1. Ignition OFF, remove the test lamp.
2. Test for infinite resistance between the B+ circuit ground.
  - If less than infinite resistance, repair the short to ground on the circuit.
  - infinite resistance
3. Test for less than 2 Ω in the B+ circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, verify the fuse is not open and there is voltage at the fuse.
- If the test lamp illuminates
Verify the appropriate scan tool easy entry switch parameter listed below is Inactive.
- Driver Seat Easy Entry Switch
- Passenger Seat Easy Entry Switch
- If not Inactive
1. Ignition OFF, disconnect the X6 harness connector at the K40 Seat Memory Control Module, ignition ON.
2. Test for less than 1 V between the appropriate signal circuit terminal listed below and ground:
  - Seat easy entry forward terminal B
  - Seat easy entry rearward terminal C
  - If 1 V or greater, repair the short to voltage on the circuit.
  - If less than 1 V, replace the K40 Seat Memory Control Module.
- If Inactive
Install a 3 A fused jumper wire between the B+ circuit terminal A and each signal circuit terminal listed below, one at a time.
- Seat easy entry forward terminal B
- Seat easy entry rearward terminal C
Verify the scan tool Seat Easy Entry Switch parameter is Forward or Rearward.
- If not Forward or Rearward
1. Ignition OFF, remove the jumper wire, disconnect the X6 harness connector at the K40 Seat Memory Control Module.
2. Test for infinite resistance between the signal circuit terminal and ground.
  - If less than infinite resistance, repair the short to ground on the circuit.
  - If infinite resistance
1. Ignition OFF.
2. Test for less than 2 Ω in the signal circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, replace the K40 Seat Memory Control Module.
- If Forward or Rearward
Test or replace the S115 Easy Entry Switch.