Brake Pressure Modulator Valve Replacement

REMOVAL PROCEDURE
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 and shield.
4. Disconnect the four electrical connectors from Electronic Brake Control Module (EBCM).
5. Disconnect the electrical connector from the combination valve.
6. Remove the front and rear brake pipes (from master cylinder) from the combination valve.
7. Remove the right front, left front and rear brake pipes from the tube adapters.





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





9. Remove the EHCU from the frame.
10. Remove the three bolts retaining the Brake Pressure Modulator Valve (BPMV) (4) form the bracket.





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

11. Remove the four T-25 Tort 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.
12. Remove the three alien bolts (8) from the combination valve.
13. Remove the combination valve (9).
14. Remove the two transfer tubes (10).

IMPORTANT: Do not reuse the transfer tubes. Always install new transfer tubes.

INSTALLATION PROCEDURE

IMPORTANT:
- Do not reuse the EBCM gasket or the old mounting bolts. Always install a new gasket and 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 the new transfer tubes(10) into the combination valve into the combination valve (9).
2. Install the combination valve onto the BPMV (4).
3. Install the three alien bolts (8) that fasten the combination valve (9) to the BPMV (4).
- Tighten the three alien bolts to 8 Nm (6 ft. lbs.), then to 16 Nm (12 ft. lbs.).

NOTICE: Refer to Fastener Notice in Service Precautions.

4. Install the new EBCM gasket (3) onto the BPMV (4).

Inspect Insure gasket alignment is correct.

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

7. Install BPMV (4) to bracket.
8. Install the three BPMV (4) to bracket retaining bolts.
- Tighten the three bolts to 9 Nm (7 ft. lbs.).

9. Install the EHCU to the vehicle frame.
- Tighten the three bolts to 12 Nm (9 ft. lbs.).

10. Install the right front, left front and rear brake pipes to the tube adapters.
- Tighten the three brake pipe fittings to 30 Nm (22 ft. lbs.).

11. Install the front and rear brake pipes (from master cylinder) to the combination valve.
- Tighten the three brake pipe fittings to 30 Nm (22 ft. lbs.).

12. Connect the electrical connector to the combination valve.
13. Connect the four electrical connectors to the EBCM.
14. Install the EHCU Shield.
- Tighten the three bolts to 12 Nm (8 ft. lbs.).

15. Lower the vehicle
16. Connect the negative battery cable.
17. Bleed the brake system. Refer to ABS Bleed Procedure.

IMPORTANT: Verify that the combination valve metering rod is depressed during bleeding.

18. Return to Diagnostic System Check. Refer to Diagnostic System Check.