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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Ignition Control Module: Testing and Inspection

1. Verify that ECU inputs and outputs are correct.
2. Check the condition of the connector, distributor, ignition coil, and high-tension leads.
3. If all are normal but misfire still occurs, replace the distributor.

NOTE: The igniter is an integral component of the distributor and is not serviced separately.