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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Object Detection System And Pedestrian Protection System - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> Parking Assist System Malfunction (without UGN) >> Circuit/System Testing >> Parking Assist Switch Circuit Malfunction

Parking Assist Switch Circuit Malfunction

  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S48 Multifunction Switch 1 - Instrument Panel. It may take up to 2 min for all vehicle systems to power down.
  2. Test for less than 10 Ω between the ground circuit terminal 10 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the ground circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the ground circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
    • If less than 10 Ω 
  3. Verify the scan tool Parking Assist Switch parameter is Inactive.
    • If the parameter is not Inactive 
    1. Ignition OFF, disconnect the X1 harness connector at the K182 Parking Assist Control Module.
    2. Test for infinite resistance between the signal circuit and ground.
      • If less than infinite resistance, repair the short to ground on the signal circuit.
      • lf infinite resistance, replace the K182 Parking Assist Control Module.
    • If the parameter is Inactive 
  4. Connect a 3 A fused jumper wire between the signal circuit terminal 5 and ground.
  5. Verify the scan tool Parking Assist Switch parameter is Active.
    • If the parameter is not Active 
    1. Ignition OFF, disconnect the X1 harness connector at the K182 Parking Assist Control Module, ignition ON.
    2. Test for less than 1 V between the control circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit
      • If less than 1 V, replace the K182 Parking Assist Control Module.
    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 K182 Parking Assist Control Module.
    • If the parameter is Active 
  6. Test or replace the S48C Multifunction Switch 1 - Instrument Panel.
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