Parking Assist Switch Circuit Malfunction
WARNING: This page is about a different car, the 2011 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the X1 harness connector at the K41 Parking Assist Control Module and the X1 harness connector at the S48E Multifunction Switch Module - Center Console.
- Test for less than 5 Ω between the S48E Multifunction Switch Module - Center Console ground circuit terminal 2 X1 and ground.
- If greater than the specified value, test the ground circuit for an open/high resistance.
- Ignition ON, test for less than 0.3 V between the signal circuit terminal 8 X1 at the K41 Parking Assist Control Module harness connector and ground.
- If greater than the specified value, test the signal circuit for a short to voltage.
- Ignition OFF, connect the harness connector at the S48E Multifunction Switch Module - Center Console.
- Ignition ON, verify that a test lamp does not illuminate between the B+ circuit terminal 1 X1 at the K41 Parking Assist Control Module harness connector and signal circuit terminal 8 X1.
- If the test lamp illuminates, test signal circuit for a short to ground. If the circuit tests normal, replace the S48E Multifunction Switch Module - Center Console.
- Verify that the test lamp illuminates between the B+ circuit terminal 1 X1 at the K41 Parking Assist Control Module harness connector and signal circuit terminal 8 X1 while pressing the parking assist switch.
- If the test lamp does not illuminate, test the signal circuit for an open/high resistance. If all circuits test normal, replace the S48E Multifunction Switch Module - Center Console.
- If all circuits test normal, replace the K41 Parking Assist Control Module.