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

Data Link Connector: Testing and Inspection

- The grounding point for circuit Z12 is the rear of the engine.
- Circuit Z12 also supplies a ground for the PCM high current drivers.
- If the system loses ground for the Z12 circuits at the rear of the engine, the vehicle will not operate. Check the connection at the ganged-ground circuit eyelet.