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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Primary Circuit Test

Fig. 2 Primary circuit test connections with external IC unit.:





1. Disconnect harness from IC unit and connect voltmeter as shown in Fig. 2.
2. Turn ignition switch to on position. Meter should read 11.5-12.5 volts.
3. If reading is less than 11.5 volts, and all primary wiring has continuity, test coil primary winding.