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

Power Supply Test

Fig. 1 Power supply circuit test connections with external IC unit.:





1. Disconnect harness from IC unit and connect voltmeter as shown in Fig. 1.
2. Turn ignition switch to on position. Meter should read battery voltage.
3. If meter reads less than battery volt ape check power supply circuit including fusible link and ignition switch, for continuity.