| Table 1: | Automatic Headlamp Leveling |
Automatic Headlamp Leveling Scan Tool Data List
Parameter | Operating Conditions | Expected Value | Definition |
|---|---|---|---|
Ignition is ON, engine OFF, and vehicle is stationary | |||
Battery Voltage | -- | 12 Volts | The scan tool displays 0-14 Volts. The scan tool displays approximately 12 Volts when the ignition is ON. |
Vehicle Speed | -- | 0 km/h | This parameter indicates the vehicle speed calculated by the control module based on an input from the vehicle speed sensor (VSS). The scan tool will display a high value at higher vehicle speeds, and a low value at lower vehicle speeds. |
Level Sensor Power Supply | -- | Volts | The scan tool displays the level sensor voltage supply in Volts. |
Front Level Sensor | -- | Degrees | The scan tool displays degrees, indicating the position of the front suspension position sensor movement based on vehicle pitch. |
Rear Level Sensor | -- | Degrees | The scan tool displays degrees, indicating the position of the rear suspension position sensor movement based on vehicle pitch. |
Front Level Sensor Calibration | -- | Degrees | The scan tool displays the current calibration of the front level sensor in degrees. |
Rear Level Sensor Calibration | -- | Degrees | The scan tool displays the current calibration of the rear level sensor in degrees. |
Engine Running Signal | Engine running | Active | The scan tool displays Active or Inactive. This is whether the run relay is engaging the starter relay. |
Engine off | Inactive | ||
Calculated Motor Value | -- | 0 - 305 steps | The scan tool displays expected motor value based from level sensor calibration. |
Current Motor Value | -- | 0 - 305 steps | The scan tool displays actual motor value based from level sensor calibration. |
Vehicle Acceleration | -- | 0 m/s2 | The scan tool displays the current acceleration of the vehicle. the expected value is 0 m/s2 due to the car being stationary. |
Vehicle Acceleration Change | -- | m/s3 | The scan tool displays the current change in acceleration of the vehicle. the expected value is 0 m/s3 due to the car being stationary. |
Brake Switch | Brake pedal applied | Active | The scan tool displays Active and Inactive. The scan tool displays active when the brake pedal is applied. |
Brake pedal not applied | Inactive | ||
Headlamps | Headlamp switch activated | On | The scan tool displays the status of the headlamps. |
Headlamp switch deactivated | Off | ||
Scan Tool Output Control | Additional Menu Selection(s) | Description |
|---|---|---|
Low Beam Actuator Test | Special Functions | The headlamp leveling module moves the headlamp leveling motors up for 5 seconds when you select UP, then centres the motors. The headlamp control module moves the headlamp leveling motors down for 5 seconds when you select DOWN, then centres the motors. |
Read ECU Identification | Light Test | When Read ECU Identification is completed the scan tool shows the part numbers of the components in the system as well as the software updates and the system identification number. |
Basic Position Calibration | Special Functions | When Calibration is selected, the Automatic Headlamp Leveling Module commands the Headlamp actuator in the Up direction to the highest setting. The actuator then pushes the headlamps in the Down direction to the lowest setting, the Headlamps then return to the default Centre setting. |
