Anti-Lock Brake System Module (ABS)

Anti-lock Brake System Module (ABS)

Note! The illustrations in this service information are used for different model years and/or models. Some variation may occur. However, the essential information in the illustrations is always correct.

Preparatory work

Remove the hydraulic modulator. Service and Repair

Removal

Removing the control module





Note! Working with the hydraulic modulator requires a very clean environment.

Warning! The pump motor must not be opened under any circumstances. A replacement part kit is enclosed when purchasing a new control module that is installed on the pump motor.

Install:
- the 4 plugs in the pipe connections
- the 2 mounting screws for the pump motor (1).
Remove the 2 screws.




Carefully pull the control module out of the hydraulic modulator.

Installation

Note! For tightening torques, see Specifications. Tightening Torque

Installing the control module





Check that:
- the control module is correct (compared to the old one)
- there are no contaminants on the mating surfaces between the control module and the hydraulic modulator
- no parts of the old control module seals remain on the old hydraulic modulator valves.
Install the new connector.
Center the control module with the hydraulic modulator valves so that the terminal pins are correctly positioned in the modulator.

Install:
- the control module
- the 2 screws. Tighten. See: Tightening torque Tightening Torque.

Remove:
- the mounting screws (1)
- the plugs.

Installing the hydraulic modulator
Install the hydraulic modulator. See: Hydraulic unit brake system Service and Repair.

Ordering software

Note! When replacing the hydraulic modulator, new software must be programmed into the brake control module (BCM).

Order applicable software. Programming and Relearning






Calibrating the control module

Note! Only applies to control modules with DSTC function.

Calibrate the control module.

Final check
Ignition on.

Wait five seconds and until the symbol for the brakes on the dashboard has gone out.

In the event of a fault (the symbol is lit).

Check that the connector is connected.

Read off any diagnostic trouble codes (DTCs) stored in the control module.

Erase. Interrupt the diagnostic function by turning off the ignition.

Test drive the car, see: Test Drive Form (ABS), description Test Drive Form (ABS), Description.

Check that no diagnostic trouble codes (DTCs) are stored.

Interrupt the diagnostic function by turning off the ignition.