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Circuit/System Testing

WARNING: This page is about a different car, the 2010 Buick LaCrosse. However, it is still accessible from the selected car via links, so may be relevant.

Parking Assist Switch Malfunction

  1. Ignition OFF, disconnect the X1 harness connector at the K41 Parking Assist Control Module.
  2. Test for infinite resistance between the input signal circuit terminal 8 X1 at the K41 Parking Assist Control Module harness connector and ground.
    • If less than the specified value, test input signal circuit for a short to ground. If the circuit tests normal, replace the S48E Multi-Function Switch Module - Center Console.
  3. If all circuits test normal, replace the K41 Parking Assist Control Module.

Parking Assist Switch Indicator Malfunction

  1. Ignition OFF, disconnect the X1 harness connector at the K41 Parking Assist Control Module and the X1 harness connector at the S48E Multi-Function Switch Module - Center Console.
  2. Ignition ON, test for B+ between the ignition circuit terminal 3 X1 at the S48E Multi-Function Switch Module - Center Console harness connector and ground.
    • If less than the specified value, test the ignition circuit for a short to ground or an open/high resistance.
  3. Test for less than 0.3 V between the control circuit terminal 3 X1 at the K41 Parking Assist Control Module harness connector and ground.
    • If greater than the specified value, test the control circuit for a short to voltage.
  4. Ignition OFF, test for infinite resistance between the control circuit terminal 3 X1 at the K41 Parking Assist Control Module harness connector and ground.
    • If less than the specified value, test control circuit for a short to ground.
  5. Test for less than 5 Ω between the S48E Multi-Function Switch Module - Center Console control circuit terminal 6 X1 and the control circuit terminal 3 X1 at the K41 Parking Assist Control Module harness connector
    • If greater than the specified value, test the control circuit for an open/high resistance.
  6. If all circuits test normal, connect the X1 harness connector to the K41 Parking Assist Control Module, replace the S48E Multi-Function Switch Module - Center Console and verify the DTC does not reset.
    • If the DTC resets, replace the K41 Parking Assist Control Module.
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