Fresh Air Blower Control Module (J126) and Fresh Air Blower (V2)

Fresh Air Blower Control Module (J126) and Fresh Air Blower (V2)

Do not grasp fan wheel of Fresh Air Blower, force against the fan wheel or shifting the balancing weights fastened to fan wheel may cause imbalance and then problems during operation.

Removing

- Remove the glove compartment.

- Remove screw clips - A - and remove insulating mat - B -.






- Remove bolt - A -.






- If necessary, remove cable ties which bind wiring harness to fresh air blower housing - C -

- Disengage the locking mechanism - B - and rotate the fresh air blower housing - C - in direction of arrow.

Heat sink on Fresh Air Blower Control Module may be hot.

• Connection between fresh air blower housing - C - and A/C unit may be sealed with sealing compound, in this case a great use of force is required for rotating.

• Fresh Air Blower Control Module and fresh air blower are installed in housing - C -. On the version that was installed at the start of production, both components were cast with each other and thus cannot be replaced separately. Refer to Electronic Parts Catalog (ETKA).






- Remove the fresh air blower housing - C - from A/C unit.

- Disconnect connector - D -.

Installing

Reinstall all removed components in the opposite sequence while observing the following:

• When installing, ensure fresh air blower is seated correctly in A/C unit.

• After installing, check seating of fresh air blower housing in A/C unit and function of Fresh Air Blower Control Module.

- Check Climatronic control module (J255) DTC memory and erase any possible displayed malfunctions using Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding" function.

- Perform a basic setting and output diagnostic test on the A/C (heater) and check the DTC memory one more time. Refer to Vehicle diagnosis, testing and information system (VAS5051B) in the "Guided Fault Finding" function.