Scan Tool Data Definitions: Data

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Backlight Dimming: The scan tool displays the duty cycle of the pulse width modulated (PWM) signal distributed by the BCM to the PWM controlled IP backlighting based on the position of the IP dimmer switch (Thumbwheel). The scan tool displays 0 percent when the headlamp switch is in the AUTO position and the daytime running lamps (DRL) are ON or the IP dimmer switch is in the FULL DIM position. The scan tool displays approximately 85 percent when either the low beam headlamps or park lamps are activated and the IP dimmer switch is in the FULL BRIGHT position.
Battery 1: The scan tool displays the battery system voltage received by the module.
Battery 2: The scan tool displays the battery system voltage received by the module.
Battery Voltage: The scan tool displays the battery system voltage.
Dimming Input: The scan tool displays the voltage value indicating the position of the IP dimmer switch (thumbwheel). The scan tool displays 4 volts when the headlamp switch is in the AUTO position and the daytime running lamps (DRL) are ON or the IP dimmer switch is in the FULL DIM position. The scan tool displays 0 volts when either the park lamps or the headlamps are turned ON and the IP dimmer switch is in the FULL BRIGHT position.
Dimming Level: The scan tool displays the duty cycle of the pulse width modulated (PWM) signal distributed by the BCM to the interior lighting circuits. The scan tool displays 0 percent when the interior lamps illumination is OFF. The scan tool displays 100 percent when the interior lamp illumination is at full intensity.
Dimming Potentiometer: The scan tool displays the duty cycle of the pulse width modulated (PWM) signal distributed by the BCM to the PWM controlled door switch backlighting based on the position of the IP dimmer switch (Thumbwheel). The scan tool displays 0 percent when the headlamp switch is in the AUTO position and the daytime running lamps (DRL) are ON or the IP dimmer switch is in the FULL DIM position. The scan tool displays 100 percent when either the headlamps or park lamps are activated and the IP dimmer switch is in the FULL BRIGHT position.
Indicator Dimming: The scan tool displays the duty cycle of the pulse width modulated (PWM) signal distributed by the BCM to the PWM controlled IP backlighting based on the postion of the IP dimmer switch (Thumbwheel). The scan tool displays 1.2 percent when the headlamp switch is in the AUTO position and the daytime running lamps (DRL) are ON or the IP dimmer switch is in the FULL DIM position. The scan tool displays 100 percent when either the headlamps or park lamps are activated and the IP dimmer switch is in the FULL BRIGHT position.
Light Sensor: The scan tool displays the output voltage of the ambient light sensor based on the intensity of light detected. As the light intensity increases, the sensor displayed voltage decreases. In the LIGHT state, a low voltage (not less than 1.75 volts) is present and the DRL will be ON. In the DARK state, a high voltage (up to 4.9 volts) is present and the headlamps will be ON.
Low Beam Duty Cycle: The scan tool displays the duty cycle percentage of the pulse width modulated (PWM) ground signal controlling the headlamp driver module (HDM). The BCM uses this feature to signal the HDM to operate the low beam headlamps in low beam headlamp mode at full intensity (100 percent) or in DRL mode at a reduced intensity (81 percent).
Memory Switch Backlight: The scan tool displays the duty cycle of the pulse width modulated (PWM) signal distributed by the BCM to the PWM controlled memory switch backlight based on the position of the IP dimmer switch (Thumbwheel). The scan tool displays 0 percent when the headlamp switch is in the AUTO position and the daytime running lamps (DRL) are ON or the IP dimmer switch is in the FULL DIM position. The scan tool displays 35 percent when either the headlamps or park lamps are activated and the IP dimmer switch is in the FULL BRIGHT position.
Mirror Switch Backlight: The scan tool displays the duty cycle of the pulse width modulated (PWM) signal distributed by the BCM to the PWM controlled mirror switch backlight based on the position of the IP dimmer switch (Thumbwheel). The scan tool displays 2 percent when the headlamp switch is in the AUTO position and the daytime running lamps (DRL) are ON or the IP dimmer switch is in the FULL DIM position. The scan tool displays 25 percent when either the headlamps or park lamps are activated and the IP dimmer switch is in the FULL BRIGHT position.
Window Switch Backlight: The scan tool displays the duty cycle of the pulse width modulated (PWM) signal distributed by the BCM to the PWM controlled window switch backlight based on the position of the IP dimmer switch (Thumbwheel). The scan tool displays 0 percent when the headlamp switch is in the AUTO position and the daytime running lamps (DRL) are ON or the IP dimmer switch is in the FULL DIM position. The scan tool displays 100 percent when either the headlamps or park lamps are activated and the IP dimmer switch is in the FULL BRIGHT position.