Electronic Brake Control Module: Service and Repair

Brake Master Cylinder with Power Brake Booster and Chassis Control Module Replacement

Removal Procedure
Caution: Refer to Brake Fluid Irritant Caution (Brake Fluid Irritant Caution) .

Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice (Brake Fluid Effects on Paint and Electrical Components Notice) .


1. Apply and release the brake pedal 20 times to deplete the hydraulic brake booster accumulator reserve.

Important: Reference mark the brake pipe location for correct installation.






2. Remove the 2 rear brake pipes (1) from the brake master cylinder.
Cap the brake pipe fittings and plug the master cylinder outlet ports to prevent brake fluid loss and contamination.

Important: Reference mark the brake pipe location for correct installation.






3. Remove the 2 front brake pipes (1) from the brake master cylinder.
Cap the brake pipe fittings and plug the master cylinder outlet ports to prevent brake fluid loss and contamination.
4. Disconnect the electrical connectors at the brake pressure modulator valve (BPMV).
5. Disconnect the brake fluid level sensor electrical connector.
6. Remove the knee bolster. Refer to Driver Knee Bolster Replacement (Driver Knee Bolster Replacement) .




7. Remove the brake master cylinder pushrod retainer bolt (1).




8. Remove the brake master cylinder pushrod retainer (1).




9. Simultaneously remove the brake master cylinder pushrod and the stoplamp switch (1) from the brake pedal clevis pin.

Important: It may be necessary to reposition or remove some of the wiring harnesses from their retainers to provide clearance to remove the brake master cylinder nuts.






10. Remove the brake master cylinder nuts (1).




11. Remove the brake master cylinder and power brake booster assembly (1).



Installation Procedure





1. Install the brake master cylinder and power brake booster assembly (1).

Notice: Refer to Fastener Notice (Fastener Notice) .





2. Install the brake master cylinder nuts (1).

Tighten the nuts to 36 N.m (27 lb ft).

3. Position the wiring harnesses to the retainers, if removed.




4. Simultaneously install the brake master cylinder pushrod and the stoplamp switch (1) to the brake pedal clevis pin.




5. Install the brake master cylinder pushrod retainer (1).




6. Install the brake master cylinder pushrod retainer bolt (1).

Tighten the bolt to 10 N.m (89 lb in).

7. Install the knee bolster. Refer to Driver Knee Bolster Replacement (Driver Knee Bolster Replacement) .




8. Install the 2 front brake pipes (1) to the brake master cylinder.

Tighten the fittings to 25 N.m (18 lb ft).

9. Connect the electrical connectors at the brake pressure modulator valve (BPMV).
10. Connect the brake fluid level sensor electrical connector.




11. Install the 2 rear brake pipes (1) to the brake master cylinder.

Tighten the fittings to 25 N.m (18 lb ft).

12. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding (Manual) (Hydraulic Brake System Bleeding (Manual))Hydraulic Brake System Bleeding (Pressure) (Hydraulic Brake System Bleeding (Pressure)) .