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Headlamp Control Module Scan Tool Information

Headlamp Control Module Scan Tool Data Parameters

Parameter Expected Value Definition
Operating Conditions:  Ignition ON/Headlamps ON
Left Headlamp Horizontal Motor Varies This displays Counts. This is the position state of the left headlamp motor.
Right Headlamp Horizontal Motor Varies This displays Counts. This is the position state of the right headlamp motor.
Front Leveling Position Sensor Signal Varies This displays Voltage. This represents the voltage that is received by the headlamp leveling control module from the front suspension position sensor. The voltage will change as the sensor moves up or down with the suspension.
Rear Leveling Position Sensor Signal Varies This displays Voltage. This represents the voltage that is received by the headlamp leveling control module from the rear suspension position sensor. The voltage will change as the sensor moves up or down with the suspension.
Front Suspension Height Reference Position Varies This displays Voltage. This represents the position of the front suspension position sensor. The voltage will change as the sensor moves up or down with the suspension.
Rear Suspension Height Reference Position Varies This displays Voltage. This represents the position of the rear suspension position sensor. The voltage will change as the sensor moves up or down with the suspension.
Front Suspension Height Sensor Supply Voltage 5 Volts This displays Voltage. This is the reference voltage that is supplied to the front suspension position sensor.
Rear Suspension Height Sensor Supply Voltage 5 Volts This displays Voltage. This is the reference voltage that is supplied to the rear suspension position sensor.
Headlamp Light Distribution Varies The scan tool displays Off, Active, Hold, Homing, Default, Powerup Pattern or Disable. This is the current state of the headlamp control module.
Headlamp Control Module Scan Tool Output Controls

Scan Tool Output Control Description
Left Headlamp Vertical Motor This output control will command the left headlamp vertical motor to the full up and down positions.
Right Headlamp Vertical Motor This output control will command the right headlamp vertical motor to the full up and down positions.
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