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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Alternator Lamp/Indicator: Testing and Inspection


1. Warm engine up and turn it off. Turn off all vehicle accessories.
2. Turn ignition on. Ensure charge warning light is on.
3. Start engine and ensure light goes off. If the light does not go off, diagnose the charge light circuit. Refer to Starting & Charging, Charging System, Diagrams.