|Steps||_Still in Key On Engine Off Continuous Monitor Mode
_Observe VOM or STAR LED for a fault indication while performing the following:
_Referring to the illustration, grasp the harness closest to the sensor connector. Wiggle, shake or bend a small section of the EEC-IV system harness while working your way to the dash panel. Also wiggle, shake or bend the EEC-IV harness from the dash panel to the processor.
|Result||Is a fault indicated?|
Isolate fault and service as necessary. Refer to appropriate figure. Clear Continuous Memory Code. Refer to Appendix in Section 16. Rerun Quick Test.
GO to Continue
|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