Test Notes

Enter this pinpoint test only when directed here from the symptom flowcharts.

This pinpoint test is intended to diagnose only the following:
- Powertrain Control Module (PCM)
- harness circuits: Injector Driver Module Enable (IDM-EN)
- Injector Driver Module (IDM) relay

DESCRIPTION
The IDM-EN output provides the shut-down control function for the fuel system by shuttling off the IDM relay.

DTC DESCRIPTION
P1662 = IDM-EN circuit failure