W/ JL4

Brake Pressure Modulator Valve (BPMV) Replacement (w/ JL4)

Removal Procedure

Important: The area around the Electric Hydraulic Control Unit (EHCU) MUST be free from loose dirt to prevent contamination of disassembled ABS components.

1. Thoroughly wash all contaminants from around the EHCU.





2. Disconnect the 2 electrical harness connectors from the Electronic Brake Control Module (EBCM) (1).





3. Disconnect the electrical connector from the pressure accumulator switch.





4. Disconnect the electrical connector from the brake fluid pressure sensor.

Important: Make sure that brake lines are tagged and kept in order for proper reassembly.

5. Disconnect the brake lines from the Brake Pressure Modulator Valve (BPMV) (2).
6. Remove the bolts (4) securing the EHCU mounting bracket (3) to the frame rail (5).
7. Remove the EHCU from the vehicle.





8. Remove the bolts (4) securing the BPMV (1) to the EHCU mounting bracket (3).
9. Remove the 4 T-25 torx bolts from the EBCM (2).
10. Remove the EBCM (2) from the BPMV (1). Removal may require a light amount of force.





11. Remove the accumulator switch.





12. Remove the brake fluid sensor (2).

Important: Do not reuse the EBCM mounting bolts. Always install new bolts.

13. Clean the EBCM to BPMV mounting surfaces with a clean cloth.

Installation Procedure

Notice: Refer to Fastener Notice in Service Precautions.





1. Install the pressure accumulator switch to the BPMV.
Tighten the switch to 3 Nm (30 inch lbs.).





2. Install the brake fluid pressure sensor (2) using a backup wrench to keep the brake fluid pressure sensor collar (1) from turning.
Tighten the sensor to 16 Nm (12 ft. lbs.).

Important: Do not use RTV or any other type of sealant on the EBCM gasket or mating surfaces.





3. Install the EBCM (2) onto BPMV (1).
4. Install the four EBCM bolts.

Important: Do not reuse the old mounting bolts. Always install new EBCM bolts with the new BPMV.

Tighten the bolts to 5 Nm (39 inch lbs.) in an X-pattern.
5. Connect the brake fluid pressure sensor and pressure accumulator switch electrical harnesses.
6. Install the BPMV (1) to EHCU bracket (3).
7. Install the BPMV to bracket retaining bolts (4).
Tighten the bolts to 9 Nm (7 ft. lbs.).





8. Install the EHCU to the vehicle frame (5).
9. Install the EHCU bracket bolts.
Tighten the EHCU bracket bolts (4) to 25 Nm (18 ft. lbs.).
10. Connect the 2 electrical harness connectors to the EBCM (1).

Important: The brake pipes are held in place by a plastic bracket mounted to the frame. Make sure that the brake pipes stay in the correct place for proper reassembly.

11. Install the brake pipes to the BPMV (2).
Tighten the brake pipe fittings to 25 Nm (18 ft. lbs.).
12. Bleed the brake system.
13. Bleed the brake system.