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

Ohms Measurements



25 Position ECU Plug:




For Terminal ID please refer to "Powertrain Management : Computers and Control Systems : Engine Control Module : Diagrams". Connector Views

CAUTION: When measuring Ohms, disconnect the ECU from the harness plug and never turn the ignition key on. It is possible that failure to follow these steps will result in damage to the ECU.




Grounds



Coolant Temperature Sensor



Throttle Switch



Fuel Pump Relay



Air Flow Sensor



Single Injector



ISC Valve