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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Ignition Control Module: Testing and Inspection

INSPECTION

1. Using a 3 volt power source and an ohmmeter, apply positive (+) power to terminal 3 and negative (-) power to terminal 2. Measure resistance between terminals 1 and 2. verify specifications shown;
- With power connected there should be continuity.
- With power disconnected there should be NO continuity.
2. If specifications are not met, replace Power Transistor.