Circuit/System Testing

Parking Assist Switch Circuit Malfunction

1. Ignition OFF, disconnect the harness connector at the S48E Multifunction Switch - Center Console.
2. Test for less than 10 Ω between the ground circuit terminal 9 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 Parking Assist Switch parameter is Inactive.
   • If parameter is not Inactive 
   1. Ignition OFF, disconnect the X1 harness connector at the K41 Front and Rear Parking Assist Control Module.
   2. Test for infinite resistance between the signal circuit terminal 3 and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the K41 Front and Rear Parking Assist Control Module.
   • If parameter is Inactive 
5. Install a 3 A fused jumper wire between the signal circuit terminal 3 and ground.
   NOTE:

   If jumper is left in place for more than 15s, DTC B0967 02 will set.

6. Verify the scan tool Parking Assist Switch parameter is Active.
   • If parameter is not Active 
   1. Ignition OFF, remove the jumper wire, disconnect the X1 harness connector at the K41 Front and Rear 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 K41 Front and Rear Parking Assist Control Module.
   • If parameter is Active 
7. Test or replace S48E Multifunction Switch - Center Console.

Parking Assist Switch Indicator Circuit Malfunction

1. Ignition OFF, disconnect the harness connector at the S48E Multifunction Switch - Center Console, Ignition ON.
   NOTE:

   Verify interior dimming is turned all the way up.

2. Test for greater than 11 V between the terminal 3 and ground.
   • If not greater than 11 V 

     Refer to Interior Backlighting Malfunction .

   • If greater than 11 V 
3. Connect a test lamp between the control circuit terminal 2 and B+.
4. Verify the test lamp turns ON (dimly) and OFF when commanding the Parking Assist Switch LED output control On and Off with the scan tool.
   • If the test lamp is always OFF 
   1. Ignition OFF, remove the test lamp, disconnect the harness connector at the K41 Front and Rear 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
   3. Ignition OFF.
   4. 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 K41 Front and Rear Control Module.
   • If the test lamp is always ON 
   1. Ignition OFF, remove the test lamp, disconnect the harness connector at the K41 Front and Rear 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, replace the K41 Front and Rear Control Module.
   • If the test lamp turns ON and OFF 
5. Test or replace the S48E Multifunction Switch - Center Console.