Circuit/System Testing

Ignition OFF and all vehicle systems OFF, disconnect the harness at the K83 Parking Brake Control Module. It may take up to 2 min for all vehicle systems to power down.
Test for less than 10 Ω between the ground circuit terminal H 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 open high/resistance in the ground connection.
- Go to next step: If less than 10 Ω
Ignition ON.
Verify that a test lamp illuminates between the B+ circuit terminal A and ground.
- If the test lamp does not illuminate and the circuit fuse is good
1. Ignition OFF.
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, verify the fuse is not open and there is voltage at the fuse.
- If the test lamp does not illuminate and the circuit fuse is open
1. Ignition OFF.
2. Test for infinite resistance between the B+ circuit and ground.
  - If less than infinite resistance, repair the short to ground on the circuit.
- Go to next step: If the test lamp illuminates
Connect the harness connector at the K83 Parking Brake Control Module.
Verify the park brake cable is connected properly. Refer to Park Brake System Diagnosis
- If park brake cable is not connected properly
  Repair as necessary.
- Go to next step: If park brake cable is connected properly
Ignition ON.
Apply and release the park brake.
Verify DTC C028E is not set.
- If the DTC set
  Replace the K83 Parking Brake Control Module.
- Go to next step: If the DTC is not set
All OK.