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Air Flow Meter/Sensor: Service and Repair

REMOVAL AND INSTALLATION

CAUTION: The mass airflow sensor hot wire sensing element and housing are calibrated as a unit and must be serviced as a complete assembly. Do not damage the sensing element (internal to housing) or possible failure of the Mass Air Flow (MAF) sensor may occur.

1. Disconnect battery ground cable.

NOTE: When the battery has been disconnected or reconnected, some abnormal drive symptoms may occur while the Powertrain Control Module (PCM) relearns its strategy. The vehicle may need to be driven 18 km (10 miles) or more to relearn the strategy.

2. Loosen engine air cleaner tube clamp on air cleaner outlet tube. Disconnect air cleaner outlet tube from MAF sensor.
3. Disconnect engine control sensor wiring from MAF sensor.
4. Release mass airflow sensor to engine air cleaner retaining clamp and remove mass air flow sensor.
5. To install, reverse removal procedure. Connect engine control sensor wiring to mass air flow sensor. Tighten engine air cleaner tube clamp to 3.4-5.2 Nm (30-46 lb in).