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Home >> Hummer >> 2003 >> H2 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Lighting Systems >> Diagnostic Information and Procedures >> Scan Tool Data Definitions >> Output Control

Output Control

Backup Lamps

The scan tool displays the commanded state of the BCM which directly supplies battery positive voltage to the backup lamps. The scan tool displays On when the BCM activates the backup lamps upon receiving a backup lamp request signal from the backup lamp switch.

Dimming

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.

High Beams

The scan tool displays the commanded state of the high beam relay. The scan tool displays On when the BCM allows the high beam relay to go to ground activating the high beam headlamps.

Inadvertent Power Relay

The scan tool displays the commanded state of the BCM which directly supplies battery positive voltage to the inadvertent power circuits.

Parking Lamp Relay

The scan tool displays the commanded state of the park lamp relay. The scan tool displays On when the BCM allows the park lamp relay to go to ground to activate the park lamps.