BCM Scan Tool Data Definitions

The BCM Scan Tool Data Definitions contains a brief description of all Lighting System related BCM parameters available on the scan tool.

Data List

Ambient Light Sensor: The scan tool displays 2.1 to 4.3 volts. The voltage level varies based upon the amount of light detected by the ambient light sensor. When the sensor detects full bright the scan tool will display 2.1 volts. When low light is detected the scan tool will display 4.3 volts.

Inputs

Courtesy Ground: The scan tool displays Present/Not Present. the input of the courtesy ground is displayed as Not Present when the ground for the courtesy lamps is not detected.

Courtesy Switch: The scan tool displays ON/OFF. The input of the courtesy switch is displayed as ON when the courtesy lamps are command ON.

Headlamp Switch: The scan tool displays inactive or active. When the headlamp switch is in the OFF position, the scan tool will display inactive. When the headlamp switch is in the ON position, the scan tool will display active.

Inadvert. Power Output: The scan tool displays ON/OFF. This output of the BCM is displayed as ON when the Inadvert. power output is present.

LCM lights on Chime: The scan tool displays ON/OFF. The input of the LCM Lights on chime is displayed as ON when the headlamps switch is ON with the ignition off and the key removed.

Lt. Turning Signal Sw.: The scan tool displays Inactive/Active. the input of the Lt. Turning Signal Sw. is displayed as active if the turn signal switch is activated in the turn left position.

Park Brake Switch: The scan tool displays inactive or active. When the park brake is OFF, the scan tool will display inactive. When the park brake is applied, the scan tool will display active.

Rt. Turning Signal Sw.: The scan tool displays Inactive/Active. the input of the Rt. Turning Signal Sw. is displayed as active if the turn signal switch is activated in the turn right position.

Outputs

Backup Lamp Relay:  The scan tool displays ON/OFF. This output of the BCM is displayed as ON when the backup lamps are turned on.

Front Fog Lamp Relay: The scan tool displays ON/OFF. This output of the BCM is displayed as ON when the fog lamps are turned on.

Headlamps: The scan tool displays ON/OFF. This output of the BCM is displayed as ON, if the BCM commands the headlamps ON.

Inadvertent Power Output: The scan tool displays OFF or ON. When the BCM is not commanding the inadvertent power On, the scan tool will display Off. When the BCM is commanding the inadvertent power ON, the scan tool will display ON.

Left Turn Signal:  The scan tool displays ON/OFF. This output of the BCM is displayed as ON, if the turn signal switch is activated in the turn left position.

Park Lamps: The scan tool displays Off or On. When the BCM is not commanding the park lamp relay On, the scan tool will display Off. When the BCM is commanding the park lamp relay On, the scan tool will display On.

Right Turn Signal: The scan tool displays ON/OFF. This output of the BCM is displayed as ON, if the turn signal switch is activated in the turn right position.

Theater Dimming #1: The scan tool displays OFF or On. When the BCM is not commanding the theater dimming ON, the scan tool displays OFF. When the BCM is commanding the theater dimming ON the scan tool displays ON.