Electronic Brake Control Module Replacement (W/JL4)

Electronic Brake Control Module Replacement (w/JL4)

Removal Procedure

Important: After installation, calibrate the new electronic brake control module (EBCM) to the tire size that is appropriate to the vehicle.



1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .




Important: The area around the electric hydraulic control unit (EHCU) MUST be free from loose dirt to prevent contamination of disassembled ABS components.


Thoroughly wash all contaminants from around the EHCU.




3. For cutaway vehicles, remove the splash shield.
4. Disconnect the electrical connectors from the EBCM.




5. Remove the mounting screws that fasten the EBCM (2) to the brake pressure modulator valve (BPMV) (1).
6. Remove the EBCM (2) from the BPMV (1). Removal may require a light amount of force.
7. Clean the BPMV to EBCM mounting surfaces with a clean cloth.



Installation Procedure






Important: Do not use room temperature vulcanizing (RTV) or any other type of sealant on the EBCM gasket or mating surfaces.


1. Install the EBCM (2) on to the BPMV (1).

Notice: Refer to Fastener Notice .

2. Install the screws to the EBCM (2).

Tighten the screws to 5 N.m (44 lb in) in an X-pattern.





3. Connect the electrical connectors to the EBCM.




4. For cutaway vehicles, install the splash shield.

Tighten the splash shield bolts to 25 N.m (18 lb ft).

5. Lower the vehicle.
6. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
7. Revise the tire calibration using the Tire Size Calibration function.
8. Verify correct system operation. Refer to Diagnostic Starting Point - Antilock Brake System (Initial Inspection and Diagnostic Overview) .
9. Refer to Control Module References for programming and setup information.