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

Engine Control Module: Testing and Inspection

Refer to COMPUTERS AND CONTROL SYSTEMS for further information on the computer control system.

If you are unsure of whether this is the appropriate area, you should start with the DIAGNOSTIC CIRCUIT CHECK.