c8: Check for Shorted VAF Sensor
| Steps | _Key Off, wait 10 seconds
_Breakout box installed _Processor connected _Disconnect VAF sensor _Key On, engine Off _DVOM on 20 volt scale _Measure voltage between Test Pin 26 and Test Pin 46 at the breakout box |
| Result | Is voltage less than 4.0 volts? |
| Direction | YES
GO to Continue NO Replace VAF sensor. Remove breakout box. Reconnect processor and sensor(s). Rerun Quick Test. |
| Component | Vane Airflow Meter |
| Description | The VAM measures air flowing into the engine. The meter contains a movable vane directly connected to a potentiometer.
Air, rushing through the VAM, changes the position of the vane and the potentiometer. The potentiometer relays vane position information to the EEC. The EEC can then translate vane position information into the volume of air flowing into the engine The VAM also contains an air temperature sensor. The sensor constantly monitors the temperature of the air flowing into the engine and reports the information to the EEC. The EEC computes volumetric airflow and air temperature, then adjusts the fuel flow to obtain the optimum air/fuel ratio. |
| Location | Mounted between the air cleaner and turbo inlet |
| Wire Colors | White with Black stripe
Light Green with Purple stripe Orange with White stripe Black with White stripe |
| Image |  |