Air Flow Meter/Sensor: Service and Repair

Mass Airflow Sensor (G70)

Removing

- Disconnect the connector - 1 - from the Mass Airflow (MAF) sensor (G70).






- Open the hose clamp - 2 - on the air duct hose to the turbocharger and pull it off at the MAF sensor.

- Remove both bolts from MAF sensor.

- Carefully pull the MAF sensor out of the guide from air filter housing.

Installing

For problem-free operation of the MAF sensor it is very important to observe the following notes and procedures.

• If the air filter is very dirty or soaked, dirt particles or moisture may have contaminated the MAF sensor and may be causing false mass airflow values. This results in a reduction of power, since a lower injection quantity is calculated.

• Always use an original air filter.

• Use a silicone-free lubricant for installing the air guide hose.

• Secure all hose connections using hose clamps appropriate for the model type, refer to the Electronic Parts Catalog (ETKA)

- Check the mass airflow sensor and air duct hose (intake air side) for salt residue, dirt, and leaves.

- Check the intake channels up to the air filter for dirt. If any contaminants are discovered, clean the air filter housing (upper and lower sections) of salt residue, dirt and leaves (if necessary, clean by washing or vacuuming). Air filter, removing and installing, refer to => [ Air Filter ] Air Filter.

Install in reverse order of removal.