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 logical successor to CHARM, I recommend you try it!

Link: lemon-manuals.la

Pinpoint Test Notes

CAUTION: Do not make Jumper connections except as directed. improper connections may damage the Voltage Regulator (VR) or fuses/fuse links.






NOTE
^ Jumper connections and meter reading are required in the pinpoint tests.
^ All voltage measurements are referenced to the negative (-) battery post unless otherwise specified.
^ All "key ON" measurements are made with the engine not running unless directed to "START engine."
^ With this charging system, four conditions can cause the charge indicator to come on during vehicle operation:
- No generator output: damaged generator or regulator.
- Over-voltage condition: shorted generator rotor or regulator.
- No connection at generator output terminal (B+).
- No connection at battery voltage sensing terminal (A terminal).