Scan Tool Data Definitions - Lighting

Scan Tool Data Definitions - Lighting

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.

Cruise Control Data List

Stop Lamp Signal
The scan tool displays ON/OFF. When the ECM detects the stop lamps are applied, the scan tool will display ON.

BCM Data List

Brake Apply Sensor
The scan tool displays volts. The voltage level varies as the brakes are applied.

BCM Inputs

Flash to Pass
The scan tool displays ON/OFF. When the multifunction switch is placed on the FTP position, the scan tool will display ON.

Front Fog Lamp Switch
The scan tool displays ON/OFF. When the fog lamp switch is placed in the ON position, the scan tool will display ON.

Hazard Switch Signal
The scan tool displays ON/OFF. When the hazard switch is placed in the ON position, the scan tool will display ON.

Headlamp OFF Switch
The scan tool displays ON/OFF. When the headlamp switch is placed in the OFF position, the scan tool will display ON.

High Beam Switch
The scan tool displays ON/OFF. When the headlamp dimmer switch is placed in the HIGH position, the scan tool will display ON.

Interior Light Switch
The scan tool displays ON/OFF. When the interior light switch is placed in the DOME position, the scan tool will display ON.

Interior Lights Power
The scan tool displays ON/OFF. When the interior lamps switch has voltage applied, the scan tool will display ON.

Left Turn Signal
The scan tool displays ON/OFF. When the turn signal switch is placed in the LEFT turn position, the scan tool will display ON.

Low Beam Switch
The scan tool displays ON/OFF. When the headlamp dimmer switch is placed in the LOW position, the scan tool will display ON.

LR Door Open Switch
The scan tool displays ON/OFF. When the LR door is open, the scan tool will display ON.

Park Brake Switch
The scan tool display ON/OFF. When the park brake is applied, the scan tool will display ON.

Park Lamp Switch
The scan tool displays ON/OFF. When the headlamp switch is in the PARK position, the scan tool will display ON.

RF Door Lock Switch
The scan tool displays ON/OFF. When the RF door is open, the scan tool will display ON.

RR Door Open Switch
The scan tool displays ON/OFF. When the RR door is open, the scan tool will display ON.

Right Turn Signal
The scan tool displays ON/OFF. When the turn signal switch is placed in the right turn position, the scan tool will display ON.

BCM Outputs

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

Brake Applied Outputs
The scan tool displays ON/OFF. This output of the BCM is displayed as ON when the brake pedal is applied.

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.

Instrumentation Backlight
The scan tool displays ON/OFF. This output of the BCM is displayed as ON when the I/P lamps are commanded ON by the BCM.

Interior Lamp Output
The scan tool displays ON/OFF. This output of the BCM is displayed as ON when the interior lamps are turned ON.

LF Turn/DRL Lamp Status
The scan tool displays ON/OFF. This output of the BCM is displayed as ON when the left turn signal is turned ON or when the BCM turns ON the DRL lamps.

LR Stop/Turn Signal Lamp
The scan tool displays ON/OFF. This output of the BCM is displayed as ON when the left turn signal is turned ON or when the brakes are applied.

Low Beam Relay Command
The scan tool displays ON/OFF. This output of the BCM is displayed as ON when the low beam headlamps are turned ON.

Park Lamp Relay
The scan tool displays ON/OFF. This output of the BCM is displayed as ON when the park lamps are turned ON.

RF Turn/DRL lamp Status
The scan tool displays ON/OFF. This output of the BCM is displayed as ON when the right turn signal is turned ON or when the BCM turns ON the DRL lamps.

RR Stop/Turn Signal Lamp
The scan tool displays ON/OFF. This output of the BCM is displayed as ON when the right turn signal is turned ON or when the brakes are applied.

BASS Data List

BASS High During Learn
The scan tool displays NO/YES. If a short to battery positive voltage is detected in the stop lamp switch signal circuit during calibration, then the scan tool will display YES.

BASS Learned
The scan tool displays NO/YES. When the brake pedal position sensor has been calibrated correctly, the scan tool will display YES.

BASS Low During Learn
The scan tool displays NO/YES. If a short to ground is detected in the stop lamp switch signal circuit during calibration, then the scan tool will display YES.

BASS Moved During Learn
If the brake pedal is moved during calibration, the scan tool will display YES.

BASS Valid
The scan tool displays NO/YES. When the brake pedal position sensor has been calibrated correctly, the scan tool will display YES.

Brake Lamp
The scan tool displays ON/OFF. When the brake is applied the scan tool will display ON.

Current Position
The scan tool displays COUNTS. The brake pedal position sensor applies a varying voltage to the BCM. The BCM then calculates the current position of the brake pedal.

Learned Home Position
The scan tool displays COUNTS. The BCM displays the home position of the brake pedal position sensor.

Learn in Progress.
The scan tool displays NO/YES. When the brake pedal position sensor is being calibrated, the scan tool will display YES.