Pinout Values and Diagnostic Parameters

Inspection
1. Remove the ECM.




2. Connect the SST (Adapter harness) to the ECM connector.

Caution: Applying voltage to SST (Monitor, Engine Signal) terminals A and B will damage the SST.

3. Connect the SST (Monitor, Engine Signal) to the SST (Adapter harness) as shown in the figure.
Use connector A of the adapter harness for ECM terminals 1A through 1AJ, 2A through 2T, and 3A through 3R. Use connector B for ECM terminals 3S through 3AB, and 4A through 4AN.




4. Place the SST (Sheet) on the SST (Monitor, Engine Signal).
5. Measure the voltage at each terminal of the ECM.
6. If there is incorrect voltage, check related input or output devices and wiring. If they are OK, replace the ECM.

Terminal voltage (Reference)

View: ECM Terminal Layout:

Terminal 1A Through 1K:

Terminal 1L Through 1AD:

Terminal 1AE Through 1L:

Terminal 2M Through 3L:

Terminal 3M Through 4E:

Terminal 4F Through 4AA:

Terminal 4AB Through 4AN: