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)

Or, hide this message: temporarily or permanently

Charging Circuit Operation

Battery supplies voltage to generator at all times. During engine start-up I/P cluster performs a bulb check by illuminating charge telltale for three seconds. ECM supplies 5 volts (L61) or 12 volts (L81) to generator L-terminal to initiate charging. Charging voltage from generator passes through fusible link to starter and then to battery.