Electronic Brake Control Module: Service and Repair

ABS Control Module

Special Service tools





Brake Pedal Hold Tool

Removal

CAUTION: Replacement of nuts and bolts: Various thread-locking devices are used on nuts and bolts throughout the vehicle. These devices restrict the number of times a nut or bolt can be used.

CAUTION: Remove brake fluid spillage immediately from paint work, with clean water.

1. Disconnect battery ground cable.

2. Position vehicle on a four-post lift.

3. Open engine compartment and fit paint work protection covers to fenders.

NOTE: The following three pictorial procedures must be carried-out to minimize brake fluid loss when disconnecting brake tubes.





4. Open Left-Hand-Front and Left-Hand-Rear caliper bleed nipples.
- Connect a bleed tube and container to the calipers.
- Open bleed nipples.





5. Depress and hold down brake pedal to specified position using special tool.
- Position tool between brake pedal and seat frame.
- Turn the tool wheel until the brake pedal is held 60 mm down from its released position.





6. Tighten bleed nipples to:
- Front caliper bleed nipple 4 - 6 Nm.
- Rear caliper bleed nipple 8 - 11 Nm.
- Remove bleed tubes and containers.





7. Remove elbow from washer bottle filler-neck .
- Remove and discard 'O'-ring seal.





8. Disconnect electrical connector from bottom of control module.





9. Disconnect electrical connector from top of control module.
- Pull plunger upwards.
- Release connector.

10. Position an absorbent cloth underneath the HCU to absorb brake fluid spillage.

CAUTION: Remove brake fluid spillage immediately from paint work, with clean water.





11. Release brake outlet tubes from HCU.
- Undo brake tube union nuts.
- Install plugs to HCU ports and brake tubes.





12. Remove control module from HCU, take care not to damage brake tubes.
- Remove bolts.
- Remove control module.

13. Clean components and mating surfaces.

Installation





1. Install control Module to HCU.
- Align control module.
- Install and tighten bolts.





2. Install brake tubes to HCU.
- Remove plugs from HCU and brake tubes.
- Install and tighten brake tube union nuts. Refer to Electronic Brake Control Module, Specifications.





3. Connect electrical connector to top of control module.
- Push plunger down to secure connector.





4. Connect lower electrical connector to control module.





5. Install elbow to washer bottle filler neck.
- Install 'O'-ring seal.
- Install elbow.

6. Remove special tool from brake pedal.

7. Reconnect battery ground cable.

8. Bleed brake system.