da3: VAT Sensor Check
| Steps | _Key Off, wait 10 seconds
_Disconnect harness from the Vane Meter _DVOM on 200,000 ohm scale _Measure resistance between VAT Signal and Signal Return at the VAT sensor |
| Result | Is resistance between 125 ohms (240F) and 3700 ohms (50F)? |
| Direction | YES
Replace processor. Reconnect harness to Vane Meter. Rerun Quick Test NO Replace Vane Meter. Rerun Quick Test |
| Notes | Ambient temperature must be greater than 50F for this 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 |  |