ECM Pin Test

Inspection
Engine Signal Monitor
1. Connect the SSTs (Special Service Tool) to the ECM as shown.
Use connector A of the adapter to measure voltage at terminals 1A through 1V and 3A through 3P and use connector B to measure voltage at the terminals 2A through 2L and 4A through 4Z.




2. Place the SST (Sheet: 76-pin type) on the SST (Engine Signal Monitor).
3. Measure the voltage at each terminal.
4. If any ECM terminal voltage is incorrect, check the input or output device and related wiring. If they are normal, replace the ECM.

CAUTION:
Applying voltage to SST terminals A or B will damage the SST.


NOTE:
If the tires are rotated by using a chassis roller with the ignition switch at ON, the ABS control module may memorize the action as a malfunction and the ABS warning light may illuminate. Troubleshooting If the ignition switch is turned to LOCK and then to ON again, the ABS warning light will not illuminate, because the action will be considered a past malfunction.