Inspection of Immobilizer Control Module (ICM) and Its Circuit: Notes
Reference: IMMOBILIZER CONTROL SYSTEM WIRING CIRCUIT DIAGRAM
ICM and its circuit can be checked at ICM wiring connector by measuring voltage.
NOTE:
If you connect a voltmeter or ohmmeter directly to the ICM by disconnecting the ICM connector, you can damage the ICM.
Never connect a voltmeter or an ohmmeter directly to any terminal on the ICM by disconnecting the ICM connector.
Never connect a voltmeter or an ohmmeter directly to any terminal on the ICM by disconnecting the ICM connector.