Scan Tool Data Definitions: Data

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Battery Voltage: The scan tool displays the battery system voltage.

Dimming Potentiometer: The scan tool displays the duty cycle of the pulse width modulated (PWM) signal distributed by the body control module (BCM) to the PWM controlled backlighting based on the position of the instrument panel (I/P) dimmer switch, thumbwheel. The scan tool displays 0 percent when the headlamp switch is in the OFF position and the daytime running lamps (DRL) are ON or the I/P 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 I/P dimmer switch is in the FULL BRIGHT position.

Dimming Potentiometer R: The scan tool displays the reference voltage to the dimming potentiometer, this voltage value is 5.0 volts.