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

Component Tests and General Diagnostics

TABLE A-3 ECM (PCM) POWER AND GROUND CIRCUIT CHECK - MIL DOES NOT LIGHT AT IGNITION SWITCH ON AND ENGINE DOES NOT START THOUGH IT IS CRANKED UP




WIRING DIAGRAM

CIRCUIT DESCRIPTION
When the ignition switch is turned ON, the main relay turns ON and the main power is supplied to ECM (PCM).




TROUBLESHOOTING