Chart C2C - 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.