Electronic Brake Control Module: Service and Repair

Electronic Brake Control Module (EBCM) Replacement (CTS-V)

Removal Procedure






1. Notice: To prevent equipment damage, never connect or disconnect the wiring harness connection from the EBCM with the ignition switch in the ON position.

Turn OFF the ignition.
2. Raise and support the vehicle.
3. Remove the front air deflector.

4. Important: The area around the Electronic Brake Control Module (EBCM) must be free from loose dirt to prevent contamination of dissembled ABS components.

Thoroughly clean all of the contaminants from and around the EBCM assembly.
5. Press the retainer in the EBCM electrical connector (1).
6. Rotate the EBCM connector tab (2) to the unlocked position.
7. Disconnect the EBCM electrical connector (1) from the EBCM (3) and position out of the way.





8. Remove and discard the EBCM to brake pressure modulator valve (BPMV) screws (1).





9. Clean the surface of the EBCM/BPMV assembly.

10. Important: The EBCM cannot be repaired. If faulty, the unit must be replaced.

Separate the EBCM (1) from the BPMV (2).

Installation Procedure





1. Clean the seal surface of the BPMV.
2. Install the EBCM (1) to the BPMV (2).
3. Make sure that the internal pump motor connector (3) is installed into the new EBCM (1) prior to EBCM replacement.






4. Important: Use New EBCM/BPMV screws after separating the EBCM from the BPMV.

Notice: Refer to Fastener Notice in Service Precautions.

Install the NEW EBCM to BPMV screws.

Tighten the (4) NEW EBCM to BPMV screws in sequence (1?4) to 5 Nm (44 inch lbs.).






5. Notice: To prevent equipment damage, never connect or disconnect the wiring harness connection from the EBCM with the ignition switch in the ON position.

Connect the EBCM electrical connector (1) to the EBCM (3).
6. Rotate the EBCM connector tab (2) to the locked position.
7. Install the front air deflector.
8. Lower the vehicle.
9. Use the scan tool in order to clear the DTCs.
10. Perform the auto bleed procedure.
11. If installing a new EBCM it is necessary to program the EBCM. Please contact your local dealer regarding this procedure.
12. Perform the ABS Diagnostic System Check.
13. Recalibrate the brake pedal position sensor.