LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hummer >> 2003 >> H2 >> Repair and Diagnosis >> External Pages >> Different car >> Section 565 (Lighting Systems) >> Diagnostic Information and Procedures >> Scan Tool Data Definitions >> Data
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Scan Tool Data Definitions: Data

WARNING: This page is about a different car, the 2004 Hummer H2. 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 I/P backlighting based on the position of the I/P dimmer switch, thumbwheel.

Battery Voltage

The scan tool displays the battery system voltage received by the module.

Dimming Input

The scan tool displays the voltage value indicating the position of the I/P dimmer switch, thumbwheel. The scan tool displays 4 volts when the I/P dimmer switch is in the FULL DIM position. The scan tool displays 0 volts when the I/P dimmer switch is in the FULL BRIGHT position.

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 I/P dimmer switch, thumbwheel.

Indicator Dimming

The scan tool displays the duty cycle of the pulse width modulated (PWM) signal distributed by the BCM to the PWM controlled I/P backlighting based on the position of the I/P dimmer switch, thumbwheel.

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.

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 I/P dimmer switch, thumbwheel.

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 I/P dimmer switch, thumbwheel.