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dk91: Check EEC-IV Harness
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?
Direction YES

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

VAM Information:
ComponentVane Airflow Meter
DescriptionThe 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.
LocationMounted between the air cleaner and turbo inlet
Wire ColorsWhite with Black stripe
Light Green with Purple stripe
Orange with White stripe
Black with White stripe