LIGHTING SYSTEM, Diagnostic DTC:B2416, B241A

DTC Code DTC Name
B2416 Height Control Sensor Malfunction
B241A Rear Height Control Sensor

DESCRIPTION

The headlight swivel ECU assembly*1 or headlight leveling ECU assembly*2 receives signals indicating the height of the vehicle from the rear height control sensor sub-assembly.


DTC Code DTC Detection Condition Trouble Area
B2416

Either condition is met:


  • A rear height control sensor malfunction.

  • An open or short in the rear height control sensor circuit.

  • Rear height control sensor sub-assembly

  • Headlight swivel ECU assembly

  • Harness or connector
B241A

Either condition is met:


  • A rear height control sensor malfunction.

  • An open or short in the rear height control sensor circuit.

  • Rear height control sensor sub-assembly

  • Headlight leveling ECU assembly

  • Harness or connector

WIRING DIAGRAM

A005333E05
*a Rear Height Control Sensor Sub-assembly
*b Headlight Swivel ECU Assembly
A005333E06
w/o AFS
*a Rear Height Control Sensor Sub-assembly
*b Headlight Leveling ECU Assembly

CAUTION / NOTICE / HINT

Tech Tips

After replacing the headlight swivel ECU assembly*1 or headlight leveling ECU assembly*2, initialization of the ECU is necessary Click here.


  • *1: w/ AFS

  • *2: w/o AFS

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2416 output does not occur.
      Result
      Result Proceed to
      OK A
      NG (w/ AFS) B
      NG (w/o AFS) C

    A

    USE SIMULATION METHOD TO CHECK Click here

    C

    READ VALUE USING GTS Click here

    B

  2. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body / AFS / Data List.

    5. Using the GTS, read the Data List.

      AFS
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Height Sens Pw Supply Val Rear height control sensor power supply value / Min.: 0 V, Max.: 5 V Approximately 5 V w/ AFS
      Rr Height Sens Signal Val Rear height control sensor signal / Min.: 0 V, Max.: 5 V Changes according to vehicle height w/ AFS
      OK
      Power supply voltage is approximately 5 V and height control sensor signal voltage changes when vehicle height is changed.

    OK

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY Click here

    NG

  3. CHECK HARNESS AND CONNECTOR (HEADLIGHT SWIVEL ECU ASSEMBLY - REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY)


    1. Disconnect the A38 headlight swivel ECU assembly connector

    2. Disconnect the I2 rear height control sensor sub-assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A38-18 (SBR) - I2-3 (SHB) Always Below 1 Ω
      A38-19 (SHRL) - I2-2 (SHRR)
      A38-21 (SGR) - I2-1 (SHG)
      A38-18 (B) - Body ground Always 10 kΩ or higher
      A38-19 (SHRL) - Body ground
      A38-21 (SGR) - Body ground

    OK

    REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body / HL AutoLeveling / Data List.

    5. Using the GTS, read the Data List.

      HL AutoLeveling
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Height Sens Pw Supply Val Rear height control sensor power supply value / 0 to 5 V Approximately 5.0 V

      • The value changes according to the vehicle height.

      • w/o AFS
      Rear Height Adjust Value Rear height adjustment offset value / 0 to 1023 Actual rear height adjustment normal value is displayed (If there is a malfunction, no value is displayed) w/o AFS
      Rear Height Adjust Valid Flag Result of rear vehicle height calibration / Valid or Inval

      Valid: Rear vehicle height calibration completed

      Inval: Rear vehicle height calibration not completed

      		 w/o AFS
      OK
      Power supply voltage is approximately 5 V and height control sensor signal voltage changes when vehicle height is changed.
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLY Click here

    B

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLY Click here

    C

  5. CHECK HARNESS AND CONNECTOR (HEADLIGHT LEVELING ECU ASSEMBLY - REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY)


    1. Disconnect the A66 headlight leveling ECU assembly connector.

    2. Disconnect the I2 rear height control sensor sub-assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A66-12 (SBR) - I2-3 (SHB) Always Below 1 Ω
      A66-19 (SHRL) - I2-2 (SHRR)
      A66-21 (SGR) - I2-1 (SHG)
      A66-18 (B) - Body ground Always 10 kΩ or higher
      A66-19 (SHRL) - Body ground
      A66-21 (SGR) - Body ground

    OK

    REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR