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. Incorrect connections may damage the voltage regulator test terminals, fuses or fuse links.
^ Do not allow any metal object to come in contact with the generator housing and internal diode cooling fins.

NOTE:
^ All voltage measurements are referenced to the negative (-) battery post unless otherwise specified.
^ When the battery has been disconnected and reconnected, some abnormal drive symptoms may occur while the Powertrain Control Module (PCM) relearns its fuel trim. The vehicle may need to be driven to relearn the strategy.