Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the K17 Electronic Brake Control Module (EBCM).
- Verify that a test lamp illuminates between the ground circuit terminal 13 and B+.
- If the test lamp does not illuminate, test the ground circuit for an open/high resistance.
- Verify that a test lamp illuminates between the B+ circuit terminal 1 and ground.
- If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
- If all circuits test normal, replace the Q5 brake pressure modulator valve assembly and verify the DTC does not reset.
- If the DTC resets, replace the K17 Electronic Brake Control Module (EBCM).