Chart C-2C, Idle Load COMPENSATOR
NOTE:
Test numbers refer to test numbers on diagnostic chart.
- ILC should be extended as no vacuum is applied.
- ILC should retract if vacuum is applied.
- Depressing the TPS simulates a WOT signal. This should make the ECM turn the ILC Quad-Driver on, blocking vacuum to the ILC. Clear long term memory after this procedure. ECM will need to "relearn" correct TPS adjustment.
- With "test" terminal grounded and TPS depressed, ECM should be turning on ILC solenoid. Test light should be on.
- Anti-dieseling solenoid is energized anytime ignition is on, so test light should be on.
- Test light should be off, as ILC Quad-Driver should be turned off.
- If test light goes out, ECM has to be replaced due to a faulty Quad-Driver.