AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM DATA LIST / ACTIVE TEST


  1. DATA LIST

    Note

    In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

    Tech Tips

    Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus:


      1. for HL AutoLeveling: Body Electrical / HL AutoLeveling / Data List. (w/o Adaptive High Beam System)

      2. for AHS: Body Electrical / AHS / Data List. (w/ Adaptive High Beam System)

    5. Read the Data List according to the display on the GTS.


      Body Electrical > HL AutoLeveling > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Headlight Low Beam State Low beam headlight state OFF or ON

      OFF: Low beam headlights off

      ON: Low beam headlights on

      -
      Headlight High Beam State High beam headlight state OFF or ON

      OFF: High beam headlights off

      ON: High beam headlights on

      -
      DRL Operating State Daytime running light state OFF or ON

      OFF: Daytime running lights off

      ON: Daytime running lights on

      -
      Clearance Light State Clearance light state OFF or ON

      OFF: Clearance lights off

      ON: Clearance lights on

      -
      Right Cornering Light State Cornering light RH state OFF or ON

      OFF: Cornering light RH off

      ON: Cornering light RH on

      Although this item is displayed on the GTS, it is not applicable to this vehicle.
      Left Cornering Light State Cornering light LH state OFF or ON

      OFF: Cornering light LH off

      ON: Cornering light LH on

      Although this item is displayed on the GTS, it is not applicable to this vehicle.
      +B No. 1 headlight ECU sub-assembly LH IG power supply voltage value 0.00 to 19.75 V 11.00 to 14.00 V -
      Height Sens Pw Supply Val Rear height control sensor sub-assembly LH power supply value 0.00 to 5.00 V 4.61 to 5.00 V -
      Rr Height Sens Signal Val Rear height control sensor sub-assembly LH signal value 0.00 to 5.00 V 0.50 to 4.50 V Value changes according to vehicle height
      Front Right Wheel Speed Value Front right wheel speed 0.00 to 260.00 km/h (162.00 mph) Condition can be displayed -
      Front Left Wheel Speed Value Front left wheel speed 0.00 to 260.00 km/h (162.00 mph) Condition can be displayed -
      Vehicle Speed Vehicle speed 0.00 to 260.00 km/h (162.00 mph) Condition can be displayed -
      Rear Height Adjust Value Rear height adjustment off set value 0 to 1023 Actual rear height adjustment normal value is displayed (If there is a malfunction, no value is displayed) -
      Rear Height Adjust Valid Flag Rear height adjustment range Inval or Valid

      Inval: Rear height control sensor sub-assembly LH value out of normal range

      Valid: Rear height control sensor sub-assembly LH value within normal range

      -
      Init Writing Count Number of times initialization performed 0 to 255 Number of times initialization performed -
      Sensor Initialization Hist Sensor initialization history not comp, 10%, 25%, 50%, 75%, 100% or complied

      not comp: No. 1 headlight ECU sub-assembly LH not initialized after replacing

      10%: Initialization completed when fuel tank was 10% full

      25%: Initialization completed when fuel tank was 25% full

      50%: Initialization completed when fuel tank was 50% full

      75%: Initialization completed when fuel tank was 75% full

      100%: Initialization completed when fuel tank was 100% full

      complied: ECU not replaced and ECU has not been initialized at workshop

      -
      Steering Sensor Signal Steering sensor value -384.0 to 382.5 deg Changes according to the operation of the steering wheel -
      Steering Sensor Center Position Steering sensor center position -3072.0 to 3070.5 deg 0.0 deg -
      +B Voltage Value No. 1 headlight ECU sub-assembly LH power supply voltage value 0.00 to 19.75 V 11.00 to 14.00 V -
      Leveling Motor Target Position Headlight leveling motor target position 0.0 to 102.3 % 10 to 90 % -
      Number Of Trouble Codes Number of trouble codes 0 to 255 Number of stored DTCs displayed -

      Body Electrical > AHS > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Clearance Light State Clearance light state OFF or ON

      OFF: Clearance lights off

      ON: Clearance lights on

      -
      +B Voltage Value No. 1 headlight ECU sub-assembly LH +B power supply voltage value 0.00 to 19.75 V 11.00 to 14.00 V -
      Traveling Direction Traveling direction Not Fwd or Fwd

      Not Fwd: Shift lever in R or N position

      Fwd: Shift lever not in R or N position

      -
      Steering Sensor Initialization Status Steering sensor initialization state Incomplete or Completed

      Incomplete: Steering sensor zero point calibration incomplete

      Completed: Steering sensor zero point calibration complete

      -
      Headlight Low Beam State Low beam headlight state OFF or ON

      OFF: Low beam headlights off

      ON: Low beam headlights on

      -
      Headlight High Beam State High beam headlight state OFF or ON

      OFF: High beam headlights off

      ON: High beam headlights on

      -
      DRL State Daytime running light state OFF or ON

      OFF: Daytime running lights off

      ON: Daytime running lights on

      -
      Engine Ready signal Stop or Run

      Stop: Power switch not on (READY)

      Run: Power switch on (READY)

      -
      Passing Light Switch Dimmer switch high flash position (pass) signal OFF or ON

      OFF: Dimmer switch not in high flash position

      ON: Dimmer switch in high flash position

      -
      Optical Axis Control State Optical axis control state OFF or ON

      OFF: Optical axis control (function to tilt up the headlights to illuminate farther distances when driving at high speeds) is not being performed

      ON: Optical axis control (function to tilt up the headlights to illuminate farther distances when driving at high speeds) is being performed

      -
      Left and Right Leveling Motor Target Value (Integer) Left and right headlight leveling motor target value (Integer) 0 to 31 mm Changes according to the position of the headlight leveling motor -
      Left and Right Leveling Motor Target Value (Fraction) Left and right headlight leveling motor target value (Fraction) 0.0000 to 0.9961 mm Changes according to the position of the headlight leveling motor -
      Left Leveling Motor Current Value (Integer) Current left headlight leveling motor target value (Integer) 0 to 31 mm Changes according to the position of the headlight leveling motor -
      Left Leveling Motor Current Value (Fraction) Left Leveling Motor Current Value (Fraction) 0.0000 to 0.9961 mm Changes according to the position of the headlight leveling motor -
      Right Leveling Motor Current Value (Integer) Current right headlight leveling motor target value (Integer) 0 to 31 mm Changes according to the position of the headlight leveling motor -
      Right Leveling Motor Current Value (Fraction) Current right headlight leveling motor target value (Fraction) 0.0000 to 0.9961 mm Changes according to the position of the headlight leveling motor -
      +B No. 1 headlight ECU sub-assembly LH IG power supply voltage value 0.00 to 19.75 V 11.00 to 14.00 V -
      Height Sens Pw Supply Val Rear height control sensor sub-assembly LH power supply value 0.00 to 6.25 V 4.61 to 5.00 V -
      Rr Height Sens Signal Val Rear height control sensor sub-assembly LH signal value 0.00 to 5.00 V 0.50 to 4.50 V Value changes according to vehicle height
      Steering Sens Signal Steering sensor signal value -384.0 to 382.5 deg Changes according to the operation of the steering wheel -
      Steering Sens Center Pos Steering sensor center position -3072.0 to 3070.5 deg 0.0 deg -
      FR Wheel Speed Front right wheel speed 0.00 to 327.67 km/h (203.60 mph) Condition can be displayed -
      FL Wheel Speed Front left wheel speed 0.00 to 327.67 km/h (203.60 mph) Condition can be displayed -
      Vehicle Speed Vehicle speed 0.00 to 327.67 km/h (203.60 mph) Condition can be displayed -
      Rear Height Adjust Valid Flag Rear height adjustment range Inval or Valid

      Inval: Rear height control sensor sub-assembly LH value out of normal range

      Valid: Rear height control sensor sub-assembly LH value within normal range

      -
      Init Writing Count Number of times initialization performed 0 to 255 Number of times initialization performed -
      Sensor Initialization Hist Sensor initialization history not comp, 10%, 25%, 50%, 75%, 100% or complied

      not comp: No. 1 headlight ECU sub-assembly LH not initialized after replacing

      10%: Initialization completed when fuel tank was 10% full

      25%: Initialization completed when fuel tank was 25% full

      50%: Initialization completed when fuel tank was 50% full

      75%: Initialization completed when fuel tank was 75% full

      100%: Initialization completed when fuel tank was 100% full

      complied: ECU not replaced and ECU has not been initialized at workshop

      -
      Number Of Trouble Codes Number of trouble codes 0 to 255 Number of stored DTCs displayed -
  2. ACTIVE TEST

    Tech Tips

    Using the GTS to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus:


      1. for HL AutoLeveling: Body Electrical / HL AutoLeveling / Active Test. (w/o Adaptive High Beam System)

      2. for AHS: Body Electrical / AHS / Active Test. (w/ Adaptive High Beam System)

    5. Perform the Active Test according to the display on the GTS.


      Body Electrical > HL AutoLeveling > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Drive The Leveling Motor Headlight leveling motor upward or downward operation Stop, Down or Up Perform the Active Test with the power switch is on (READY) and vehicle stopped
      Headlight Leveling Indicator "Headlight System Malfunction Visit Your Dealer" display OFF or ON -

      Body Electrical > AHS > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Drive The Leveling Motor Headlight leveling motor upward or downward operation Stop, Down or Up Perform the Active Test with the power switch is on (READY) and vehicle stopped
      Headlight Indicator "Headlight System Malfunction Visit Your Dealer" display OFF or ON -