Inspection of BCM and Its Circuits: Notes
BCM and its circuits can be checked at BCM wiring couplers by measuring voltage and resistance.
CAUTION:
If you connect a voltmeter or ohmmeter directly to the BCM by disconnecting the BCM connectors, you can damage the BCM. Never connect a voltmeter or an ohmmeter directly to any terminal on the BCM by disconnecting the BCM connectors.