dk22: Check Continuity of VAF Signal and Signal Return
| Steps | _Key OFF
_Harness disconnected from Vane Meter _Disconnect processor 60 pin connector. Inspect for damaged pins, corrosion, loose wires, etc. Service as necessary _Install breakout box, leave processor disconnected _DVOM on 200 ohm scale _Measure resistance between VAF SIGNAL, at the Vane Meter vehicle harness connector, and Test Pin 43 (Test Pin 27 on 2.3L TC) at the breakout box. |
| Result | Is resistance less than 5 ohms? |
| Direction | YES
GO to Continue NO Service open circuit. Remove breakout box. Reconnect processor and Vane Meter. 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 |  |