Circuit/System Testing

Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the K17 Electronic Brake Control Module. It may take up to 2min for all vehicle systems to power down.
Test for less than 10Ω between the ground circuit terminals listed below and ground:
- Terminal 13
- Terminal 38
- If 10Ω or greater
1. Ignition OFF
2. Test for less than 2Ω in the ground circuit end to end.
  - If 2Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2Ω, repair the open/high resistance in the ground connection.
- If less than 10Ω
Ignition ON.
Verify a test lamp illuminates between the B+ circuit terminals listed below and ground.
- Terminal 1
- Terminal 25
- If the test lamp does not illuminate and the circuit fuse is good
1. Ignition OFF, remove the test lamp.
2. Test for less than 2Ω in the B+ circuit end to end.
  - If 2Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2Ω, 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, remove the test lamp.
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, replace the K17 Electronic Brake Control Module.
- If the test lamp illuminates
Replace the K17 Electronic Brake Control Module.