Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Test Notes

You should enter this pinpoint test only when directed here from the symptom flow charts.

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 enable output provides the shut-down control function for the fuel system by shutting off the IDM power relay.