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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ICM4 - Check ICM Wire For Short



- Key OFF.

- Install Breakout Box (leave PCM disconnected).

- Disconnect the 6-pin distributor connector.

- Measure the resistance between BOB Test Pin ICM and ground.

- Measure the resistance between Test Pin ICM and Test Pin PWR.

- Are the resistances greater than 10,000 ohms?

Yes -- Go to ICM5. ICM5 - Ground at Distributor

No -- Service the ICM wire for short(s).