Air flow sensor (models with a 6-cylinder engine up to 1997 of release)
Air flow sensor (arrow) located in the air intake duct.
Air flow sensor (1998 4-cylinder models)
Examination
1. Remove and clean the sensor. Set it in place.
2. Check the voltage supply to the sensor.
All four-cylinder models and 1998 six-cylinder models
3. Check the voltage between the MAF and GND terminals. On models where the connection connector has three terminals, with the ignition on and the engine off, the voltage should be 1.0–1.5 Volts. At idle, the voltage should be 1.5-5.0 volts.
4. On models with a four-pin connector, the voltage should be close to zero when the engine is off. At idle, it should be 0.6-0.7 volts (0.6-1.1 volts on 1998 models).
5. Raise the engine speed and check that the voltage gradually increases to about 2 volts.
1993-1997 6-cylinder models
6. Disconnect the air intake from the sensor. Connect a voltmeter to the MAF and GND terminals of the sensor connector. Turn on the ignition. When the sensor shutter is closed, the voltage should be 4.0 volts. When the damper is opened, the voltage should change as follows:
- A) damper open 1/4 - 2.4 volts
- b) damper open 1/2 - 1.6 volts
- V) damper open 3/4 - 0.8 volts
- G) damper fully open - 0.4 volts
Replacement
1. Disconnect the negative battery cable.
2. Disconnect the sensor connector, unscrew the fixing screws or bolts (arrows) and remove the sensor.
3. Installation is carried out in the reverse order of removal.