Caprice Wagon V8-305 5.0L (1986)
CHART C-2CIDLE LOAD COMPENSATOR (ILC) CHECK 5.0L (VIN Y) (CARB)
Test Description:
Numbers below refer to circled numbers on the diagnostic chart.
1.
ILC plunger should be extended as no vacuum is being applied.
2.
ILC plunger should retract if vacuum is applied.
3.
Depressing the TPS should make the ECM turn the ILC quad-driver "ON", blocking vacuum to the ILC, and simulating a W.O.T. condition. Clear
long term memory after this procedure, as the ECM must relearn correct TPS voltage.
4.
With test terminal grounded, ECM should be turning "ON" ILC solenoid assembly. Test light should be "ON".
5.
Anti-diesel solenoid is energized any time ignition is "ON", so test light should be "ON".
