ECM Pin Test

INSPECTION
1. Lift up the floormat in front of the passenger's seat.

Connect Special Service Tools As Shown:

2. Connect the special service tool (SST) (Engine Signal Monitor) between the engine control module (ECM) and the wiring harness using the SST (Adapter) as shown.

View: Special Service Tool (SST)-Sheet Overlay:

3. Place the SST (Sheet) on the SST (Engine Signal Monitor).
4. Measure the voltage at each terminal.

Refer to Computers and Control Systems/ ECM Terminal Voltage Charts.


5. If any ECM terminal voltage is incorrect, check the input or output device and related wiring.
6. If they are normal, replace the ECM.

View: Special Service Tool:

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