Circuit/System Testing

Without UGN

1. Ignition OFF, and all vehicle systems OFF, disconnect the harness connector at the S48E Multifunction Switch - Center Console, ignition ON.
2. Test for 1.7-3.6 V between the dimming control circuit terminal 3 and ground.
   NOTE:

   Verify interior lighting dimming is turned all the way up.

   • If less than 1.7 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 1.7-3.6 V 
3. Ignition OFF, disconnect the harness connector at the K109 Frontview Camera Module, ignition ON.
4. Test for less than 1 V between the signal circuit terminal 10 and ground.
   • If 1 V or greater 

     Repair the short to voltage on the circuit.

   • If less than 1 V 
5. Ignition OFF.
6. Test for infinite resistance between the signal circuit terminal 10 and ground.
   • If less than infinite resistance 

     Repair the short to ground on the circuit.

   • If infinite resistance 
7. Test for less than 5 Ω between the K109 Frontview Camera Module terminal 10 and S48E Multifunction Switch - Center Console circuit terminal 7.
   • If greater than 5 Ω 

     Repair the open/high resistance in the circuit.

   • If less than 5 Ω 
8. Test or replace the S48E Multifunction Switch - Center Console.
9. Verify the lane departure switch Indicator turns ON and OFF when cycling the S48E Multi-Function Switch - Center Console.
   • If indicator does not turn on and off 

     Replace K109 Frontview Camera Module.

   • If indicator turns on and of  f
10. All OK.

With UGN

1. Ignition OFF, and all vehicle systems OFF, disconnect the harness connector at the S48E Multifunction Switch - Center Console, ignition ON.
   NOTE:

   Verify interior lighting dimming is turned all the way up.

2. Test for 1.6-3.6 V between the dimming control circuit terminal 3 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. Ignition OFF, disconnect the X1 harness connector at the K124 Active Safety Control Module, ignition ON.
4. Test for less than 1 V between the signal circuit terminal 3 and ground.
   • If 1 V or greater 

     Repair the short to voltage on the circuit.

   • If less than 1 V 
5. Ignition OFF.
6. 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 
7. Test for less than 5 Ω between the K124 Active Safety Control Module terminal 3 and S48E Multifunction Switch - Center Console circuit terminal 8.
   • If greater than 5 Ω 

     Repair the open/high resistance in the circuit.

   • If less than 5 Ω 
8. Test or replace the S48E Multifunction Switch - Center Console.
9. Verify the lane departure indicator turns ON and OFF when cycling the S48E Multifunction Switch - Center Console.
   • If indicator does not turn on and off 

     Replace K124 Active Safety Control Module.

   • If indicator turns on and of  f
10. All OK.