Circuit/System Test

C0293 01, C0293 02, C0293 04 or C0293 06

1. Ignition OFF, disconnect the harness at the S91 park brake control switch.
2. Ignition ON.
3. Test for greater than 11.5 V between the B+ circuit terminal listed below and ground:
   • Terminal 1
   • Terminal 4
   • Terminal 5
   • If 11.5 V or less 
   1. Ignition OFF, disconnect the harness connector at the K83 parking brake control module.
   2. Test for infinite resistance between the B+ 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 B+ circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K83 parking brake control module.
   • If greater than 11.5 V 
4. Connect the harness connector at the S91 park brake control switch. Disconnect the harness connector at the K83 parking brake control module.
5. Ignition ON, test for greater than 11.5 V between the ignition circuit terminal P and ground:
   • If 11.5 V or less 
   1. Ignition OFF, test for infinite resistance between the ignition circuit terminal P and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
   2. Test for less than 2 Ω in the B+ circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω and the fuse is blown, replace the K83 parking brake control module.
   • If greater than 11.5 V 
6. Ignition OFF, test for less than 1 V between the circuit terminals listed below and ground:
   • B+ circuit terminal N
   • B+ circuit terminal R
   • B+ circuit terminal S
   • Signal circuit terminal B
   • Signal circuit terminal C
   • Signal circuit terminal D
   • If 1 V or greater 

     Repair the short to voltage on the circuit.

   • If less than 1 V 
7. Test for infinite resistance between the signal circuit terminals listed below and ground:
   • Signal circuit terminal B
   • Signal circuit terminal C
   • Signal circuit terminal D
   • If less than infinite resistance 

     Repair the short to ground on the circuit.

   • If infinite resistance 
8. Test for less than 5 Ω between the signal circuit terminal D and the B+ circuit terminal R.
   • If 5 Ω or greater 
   1. Ignition OFF, disconnect the harness connector at the S91 park brake control switch.
   2. Test for less than 2 Ω in the signal circuit terminal D end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, test or replace the S91 park brake control switch.
   • If less than 5 Ω 
9. Test for less than 5 Ω between the signal circuit terminal B and the B+ circuit terminal S.
   • If 5 Ω or greater 
   1. Ignition OFF, disconnect the harness connector at the S91 park brake control switch.
   2. Test for less than 2 Ω in the signal circuit terminal B end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, test or replace the S91 park brake control switch.
   • If less than 5 Ω 
10. Test for less than 5 Ω between the signal circuit terminal C and the B+ circuit terminal N.
    • If 5 Ω or greater 
    1. Ignition OFF, disconnect the harness connector at the S91 park brake control switch.
    2. Test for less than 2 Ω in the signal circuit terminal C end to end.
       • If 2 Ω or greater, repair the open/high resistance in the circuit.
       • If less than 2 Ω, test or replace the S91 park brake control switch.
    • If less than 5 Ω 
11. Replace the K83 parking brake control module.

C0293 00 or C0293 08

1. Ignition ON.
2. Verify no additional DTCs are set in other control modules.
   • If additional DTCs are set 

     Refer to Diagnostic Trouble Code (DTC) List - Vehicle

   • If no additional DTCs are set 
3. Verify DTC C0293 00 or C0293 08 is not set.
   • If DTC C0293 00 or C0293 08 is set 
   1. Ignition OFF, remove the parking brake control module fuse and reinstall, ignition ON.
   2. Verify DTC C0293 00 or C0293 08 is not set.
      • If the DTC is set,

        replace the K83 parking brake control module.

      • If the DTC is not set
   3. All OK.
   • If DTC C0293 00 or C0293 08 is not set 
4. All OK.