Engine Control Module: Testing and Inspection

1. Disconnect the Powertrain Control Module (PCM) connector.

Special Service Tool (SST) "Breakout Box":

2. Connect the Super Star II Tester to the PCM.
3. Measure the voltage at each terminal with a voltmeter.
4. If any PCM terminal voltage is incorrect, check the related input or output devices and wiring. If no problem is found, replace the PCM.