Circuit/System Testing

Parking Assist Indicator Malfunction

1. Vehicle OFF, disconnect the harness connector at the S48D Multifunction Switch 2 - Instrument Panel. It may take up to 2 min for all vehicle systems to power down.
2. Test for 1.6 - 3.6 V between the control circuit terminal 6 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, refer to Interior Backlighting Malfunction .
   • 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, refer to Interior Backlighting Malfunction .
   • If between 1.6 - 3.6 V 
3. Connect a test lamp between the control circuit terminal 7 and signal circuit terminal 6.
4. Verify the test lamp turns On and Off when commanding the Parking Assist Switch On and Off with a scan tool.
   • If the test lamp is always OFF 
   1. Vehicle OFF, disconnect the harness connector at the K182 Parking Assist Control Module, Vehicle 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
   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 K182 Parking Assist Control Module.
   • If the test lamp is always ON 
   1. Vehicle OFF, disconnect the harness connector at the K182 Parking Assist Control Module.
   2. Test for infinite resistance between the control circuit and ground.
      • If less than infinite resistance, repair the short to ground in the circuit.
      • If infinite resistance, replace the K182 Parking Assist Control Module.
   • If the test lamp turns ON and OFF 
5. All OK.

Parking Assist Switch Malfunction

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S48D Multifunction Switch 2 - Instrument Panel. 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 2 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 2 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 S48D Multifunction Switch 2 - Instrument Panel.