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Circuit/System Testing

WARNING: This page is about a different car, the 2015 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Disconnect the harness connector at the S48D Multi-Function Switch 2- Instrument Panel.
  3. Verify the scan tool Advanced Parking Assist Switch parameter is Inactive.
    • If not Inactive 
    1. Ignition OFF, disconnect the X1 harness connector at the K41 Front and Rear Parking Assist Control Module.
    2. Test for infinite resistance between the S48D Multi-Function Switch 2- Instrument Panel signal circuit terminal 4 and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the K41 Front and Rear Parking Assist Control Module.
    • If Inactive 
  4. Install a 3 A fused jumper wire between the signal circuit terminal 4 and ground terminal 5.
  5. Verify the scan tool Advanced Parking Assist Switch parameter Active.
    • If not Active 
    1. Ignition OFF, disconnect the harness connector at the K41 Front and Rear Parking Assist Control Module, ignition ON.
    2. Test for less than 1 V between the S48D Multi-Function Switch 2- Instrument Panel signal circuit terminal 4 and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V
    3. Ignition OFF
    4. 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 K41 Front and Rear Parking Assist Control Module.
    • If Active 
  6. Test or replace the S48D Multi-Function Switch 2- Instrument Panel.
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