Parking Assist Switch Indicator Malfunction

WARNING: This page is about a different car, the 2016 Chevrolet Malibu Limited. However, it is still accessible from the selected car via links, so may be relevant.

Ignition OFF, disconnect the harness connector at the S48A Multifunction Switch - Instrument Panel.
Test for less than 10 Ω between the S48A Multifunction Switch - Instrument Panel 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
Connect a test lamp between the voltage circuit terminal 3 and control circuit terminal 6.
Verify the test lamp turns ON and OFF when commanding the Parking Assist Switch LED On and Off with a scan tool.
- If the test lamp is always OFF
1. Ignition OFF, disconnect the harness connector at the K41R Rear Parking Assist Control Module.
2. Test for infinite resistance between the voltage circuit and ground.
  - If less than infinite resistance, repair the short to ground in 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 K41R Rear Parking Assist Control Module.
- If the test lamp is always ON
1. Ignition OFF, disconnect the harness connector at the K41R Rear Parking Assist Control Module, ignition ON.
2. Test for less than 1 V between the voltage circuit and ground.
  - If 1 V or greater, repair the short to voltage on the circuit.
  - If less than 1 V, replace the K41R Rear Parking Assist Control Module.
- If the test lamp turns ON and OFF
All OK.