Air Quality Sensor, Checking

Air Quality Sensor, Checking

NOTE: As 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.

Removal

Removing the windshield wiper and cowl

Remove:
- the windshield wipers.
- the cowl over the windshield wiper recess.

Check

Checking the air quality sensor







- Start the car engine with the ECC automatic button in the ON position.







- Spray quick rust penetrator 1161422-9 into the opening for the air quality sensor.

NOTE: Only spray a little.

If the air quality sensor and the other electronics are fault free, the damper for the air intake should close very soon.







If the air quality sensor is fault free, the damper for the air intake will gradually open after approximately 15 seconds.

Installation

Installing the windshield wiper and cowl

Install:
- the cowl over the windshield wiper recess.
- the windshield wipers.

NOTE: Cover the air intake to the passenger compartment when the engine compartment or the car is being treated with wax or preserving agent.