Control Module, Replacement [MMMM]

MMMM. Control module, replacement

[MMMM1]

Preparations

- Ignition off.
- Remove air filter casing and hose to air heater.

[MMMM2]

Removing control module






Clean around the connections.

Remove:

- The connection to the control module by first pressing in the catch on the back of the cover (toward wheel housing). Then carefully turn the cover upwards to release the catches.
- Pump motor connector.
- Remove the four bolts.
- Remove the control module carefully from the car.

[MMMM3]

Checking the control module






Check that the control module is of the correct type, depending on whether the car is fitted with TRACS or not.
Check that none of the connector pins or sockets are damaged.
Check that there is no dirt on contact surfaces between control module and hydraulic unit.
Check that none of the control module's seals are left on the hydraulic unit valves.

[MMMM4]

Installing control module

Center the control module relative to the hydraulic unit valves before pushing them into place.

- Install control module and tighten bolts to 1.8 Nm (1.3 ft lb).

Connect:

- Pump motor and control module connectors.
- Air filter casing and hose to air heater.

[MMMM5]

Function check






- Read out any DTCs which are posted in the control module and replace them.
- Switch off Volvo ST.

Check that ABS warning light stops flashing.

- Test drive the car.

Check that no new DTCs are posted.

Warning! The ABS and EBD systems are not available while Volvo Diagnostics is activated. Take great care when test driving as there is a serious risk of the wheels locking.