Inspection of BCM and Its Circuits

Inspection of BCM and Its Circuits

BCM and its circuits can be checked at BCM wiring couplers by measuring voltage and resistance.

CAUTION: BCM cannot be checked by itself. It is strictly prohibited to connect voltmeter or ohmmeter to BCM with couplers disconnected from it.

Voltage Check

1. Disconnect negative cable (-) at battery.
2. Remove BCM.
3. Connect connectors to BCM.
4. Check voltage at each terminal number of couplers connected.
For connector and terminal number, refer to Connector Layout Diagram of BCM.

NOTE:
- As each terminal voltage is affected by the battery voltage, confirm that it is 11 V or more when ignition switch is ON.
- Voltage with asterisk (*) can not be measured by voltmeter because it is pulse signal.
Check it with oscilloscope if necessary.

BCM connector "G30"