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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Power Window Circuit Breaker: Testing and Inspection

To test the circuit breaker, connect the negative lead of a voltmeter to a known good ground, and touch the positive lead to one terminal of the circuit breaker. If battery voltage is present, test the other terminal of the circuit breaker. If battery voltage is present on only one terminal, then the circuit breaker is defective. If battery voltage is present on neither terminal, check for a burned fusible link or power lead wire to the circuit breaker.