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Home >> GMC >> 2017 >> Acadia SL >> Repair and Diagnosis >> Accessories & Equipment >> Collision/Avoidance >> Object Detection System And Pedestrian Protection System >> Diagnostic Information and Procedures >> DTC B0967 or B0968: Parking Assist On/Off Switch >> Circuit/System Testing

Circuit/System Testing

Parking Assist Switch Malfunction (without UGN)

  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S126 Drive Mode Select Switch. It may take up to 2 minutes 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 circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
    • If less than 10 Ω 
  3. Ignition ON.
  4. Verify the scan tool Park Assist Switch parameter is Inactive.
    • If not Inactive 
    1. Ignition OFF, disconnect the harness connector X1 at the K182 Parking Assist Control Module.
    2. Test for infinite resistance between the signal circuit terminal 15 and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the K182 Parking Assist Control Module.
    • If Inactive 
  5. Install a 3 A fused jumper wire between the signal circuit terminal 15 and ground.
  6. Verify the scan tool Park Assist Switch parameter is Active.
    • If not Active 
    1. Ignition OFF, disconnect the harness connector X1 at the K182 Parking Assist Control Module, ignition ON.
    2. Test for less than 1 V between the signal circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V
    3. 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 Active 
  7. Test or replace the S126 Drive Mode Select Switch.

Parking Assist Switch Indicator Malfunction (without UGN)

  1. Ignition OFF, disconnect the harness connector at the S126 Multifunction Switch - Center Console. Ignition ON, interior dimming set to full bright.
  2. Test for 1.6-3.6 V between the control circuit terminal 3 and ground.
    • If less than 1.6 V 
    1. Ignition OFF, disconnect the harness connector at the K9 Body Control Module.
    2. Test for infinite resistance between the control 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 control circuit end to end.
    • If greater than 3.6 V 
    1. Ignition OFF, disconnect the harness connector at the K9 Body Control Module, ignition ON.
    2. Test for less than 1 V between the control circuit and ground.
    • If between 1.6-3.6 V 
  3. Ignition OFF, disconnect the harness connector at the K124 Active Safety Control Module, ignition ON.
  4. Test for less than 1 V between the signal circuit terminal 2 and ground.
    • If 1 V or greater 

      Repair the short to voltage on the circuit.

    • If less than 1 V 
  5. Ignition OFF.
  6. Test for infinite resistance between the signal circuit terminal 2 and ground.
    • If less than infinite resistance 

      Repair the short to ground on the circuit.

    • If infinite resistance 
  7. Test for less than 5 Ω between the K124 Active Safety Control Module terminal 2 and S126 Multifunction Switch - Center Console circuit terminal 6.
    • If greater than 5 Ω 

      Repair the open/high resistance in the circuit.

    • If less than 5 Ω 
  8. Test or replace the S126 Drive Mode Select Switch.
  9. Verify the Park Assist Switch Indicator turns ON and OFF when cycling the parking assist switch.
    • If indicator does not turn on and off 

      Replace K182 Parking Assist Control Module.

    • If indicator turns on and of  f
  10. All OK.

Parking Assist Switch Malfunction (with UGN)

  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S126 Drive Mode Select Switch. It may take up to 2 minutes for all vehicle systems to power down.
  2. Test for less than 10 Ω between the ground circuit terminal 2 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 circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
    • If less than 10 Ω 
  3. Ignition ON.
  4. Verify the scan tool Park Assist Switch parameter is Inactive.
    • If not Inactive 
    1. Ignition OFF, disconnect the harness connector X1 at the K124 Active Safety Control Module.
    2. Test for infinite resistance between the signal circuit terminal 11 and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the K124 Active Safety Control Module.
    • If Inactive 
  5. Install a 3 A fused jumper wire between the signal circuit terminal 5 and ground.
  6. Verify the scan tool Park Assist Switch parameter is Active.
    • If not Active 
    1. Ignition OFF, disconnect the harness connector at the K124 Active Safety Control Module, ignition ON.
    2. Test for less than 1 V between the signal circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V
    3. 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 K124 Active Safety Control Module.
    • If Active 
  7. Test or replace the S126 Drive Mode Select Switch.

Parking Assist Switch Indicator Malfunction (with UGN)

  1. Ignition OFF, disconnect the harness connector at the S126 Multifunction Switch - Center Console. Ignition ON, interior dimming set to full bright.
  2. Test for 1.6-3.6 V between the control circuit terminal 3 and ground.
    • If less than 1.6 V 
    1. Ignition OFF, disconnect the harness connector at the K9 Body Control Module.
    2. Test for infinite resistance between the control 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 control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K9 Body Control Module.
    • If greater than 3.6 V 
    1. Ignition OFF, disconnect the harness connector at the K9 Body 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 K9 Body Control Module.
    • If between 1.6-3.6 V 
  3. Ignition OFF, disconnect the harness connector at the K124 Active Safety Control Module, ignition ON.
  4. Test for less than 1 V between the signal circuit terminal 2 and ground.
    • If 1 V or greater 

      Repair the short to voltage on the circuit.

    • If less than 1 V 
  5. Ignition OFF.
  6. Test for infinite resistance between the signal circuit terminal 2 and ground.
    • If less than infinite resistance 

      Repair the short to ground on the circuit.

    • If infinite resistance 
  7. Test for less than 5 Ω between the K124 Active Safety Control Module terminal 2 and S126 Multifunction Switch - Center Console circuit terminal 6.
    • If greater than 5 Ω 

      Repair the open/high resistance in the circuit.

    • If less than 5 Ω 
  8. Test or replace the S126 Drive Mode Select Switch.
  9. Verify the Park Assist Switch Indicator turns ON and OFF when cycling the parking assist switch.
    • If indicator does not turn on and off 

      Replace K124 Active Safety Control Module.

    • If indicator turns on and of  f
  10. All OK.
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