Operation CHARM: Car repair manuals for everyone.

Pinout Values and Diagnostic Parameters


^ Unless otherwise specified, all voltage measurements are to be carried out with all components connected and with the ignition switch in the Drive position.

^ The measurements are to be carried out using a Breakout-Box connected between the ECM and the ECM's connector.

^ Some of the measurements are to be carried out with the engine running at idling speed.

^ Several of the voltage levels are to be regarded as guiding values only. Use your common sense when judging whether the reading obtained is correct or not.

^ If any measured value is incorrect, use the wiring diagram to determine which leads, connectors or components should be checked additionally.


Trionic ECM Connector:





ECM Connector

Trionic ECM Pin-out (1 - 15):





ECM Pins 1 - 15

Trionic ECM Pin-out (16 - 30):





ECM Pins 16 - 30

Trionic ECM Pin-out (31 - 45):





ECM Pins 31 - 45

Trionic ECM Pin-out (46 - 60):





ECM Pins 46 - 60

Trionic ECM Pin-out (61 - 70):





ECM Pins 61 - 70