Engines v6
Mass air flow sensor
1. Sensor; 2. connector; 3. Gasket
Hot-wire sensor, mounted on the air duct.
Examination
1. Disconnect the connector and, with the ignition on, check for battery voltage at terminal 4. If there is no voltage, check the circuit from the main injection relay to the sensor.
2. Connect the connector and with the engine running, check for voltage between pins 1 and 3 by connecting the voltmeter probes to the back of the pins. The voltage should be between 1.0 and 1.5 V. With a decrease or increase in engine speed, the voltage at these terminals should fluctuate.
3. If the voltage does not match the specified, then check the integrity of the sensor wires.
4. Before replacing the sensor, check it in a car service.
Replacement
1. Switch off the ignition.
2. Disconnect the connector.
3. Remove the air filter.
4. Remove 2 screws and remove sensor.