Electronic Brake Control Module: Service and Repair

REMOVAL PROCEDURE

IMPORTANT: After installation, calibrate the new Electronic Brake Control Module (EBCM) to the tire size that is appropriate to the vehicle. Refer to Tire Size Calibration portion of ABS System Description.

1. Negative Battery Cable.

CAUTION: Before removing or installing any electrical unit or when a tool or equipment could easily come in contact with "live" exposed electrical terminals, disconnect the negative battery cable to help prevent personal injury and/or damage to the vehicle or components. Unless instructed otherwise, the ignition switch must be in the "OFF" or "LOCK" position.


2. Raise vehicle and properly support.





3. Remove the three Electronic Hydraulic Control Unit (EHCU) (1) shield bolts ant shield.
4. Disconnect the four electrical connectors from EBCM.





5. Remove the three bolts (1) that fasten the EHCU bracket to the frame.





6. Remove the EHCU from the frame allowing enough clearance to access the EBCM. Be careful not to bend the brake pipes attached to the EHCU

IMPORTANT: Do not use a tool to pry the EBCM or the BPMV. Excessive force will damage the EBCM.





7. Remove the four T-25 Torx bolts (1) that fasten the EBCM to the BPMV. Remove the EBCM (2) from the BPMV (4). Removal may require a light amount of force.
8. Clean the BPMV with a clean, dry cloth.

INSTALLATION PROCEDURE

IMPORTANT:
^ If the EBCM mounting bolts are corroded or damaged, do not reuse the old mounting bolts. Install new EBCM mounting bolts with the new EBCM.
^ Do not use RTV or any other type of sealant on the EBCM Gasket or mating surfaces.





1. Install EBCM (2) to BPMV (4).
2. Install the four EBCM bolts (1).
^ Tighten the four bolts to 5 Nm (39 inch lbs.) in an X-pattern.

NOTICE: Refer to Fastener Notice in Service Precautions.

3. Connect the four electrical connectors to the EBCM.
4. Install the EHCU Shield.
^ Tighten the three bolts to 12 Nm (8 ft. lbs.).
5. Lower the vehicle
6. Connect the negative battery cable.
7. Revise the tire calibration using the Scan Tool.
8. Return to Diagnostic System Check. Refer to Diagnostic System Check.