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LIGHTING SYSTEM, Diagnostic DTC:B2416, B241A

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

The DTC is stored when the headlight swivel ECU*1 or headlight leveling ECU*2 detects malfunctions in the rear height control sensor LH power source or rear height control sensor LH (w/o Active Height Control Suspension).


The headlight swivel ECU receives signals indicating the height of the vehicle from the suspension control ECU (w/ Active Height Control Suspension).

DTC Code DTC Detection Condition Trouble Area
B2416

w/o Active Height Control Suspension:


  • Malfunction in the rear height control sensor LH.

  • Open or short in the rear height control sensor LH power source circuit.

  • Rear height control sensor sub-assembly LH (w/o Active Height Control Suspension)

  • Suspension control ECU (w/ Active Height Control Suspension)

  • Headlight swivel ECU assembly (w/ Dynamic Headlight Auto Leveling)

  • Headlight leveling ECU assembly (w/ Static Headlight Auto Leveling)

  • Harness or connector

w/ Active Height Control Suspension:


  • Malfunction in the suspension control ECU.

  • Open or short in the suspension control ECU circuit.
B241A

  • Malfunction in the rear height control sensor LH.

  • Open or short in the rear height control sensor LH circuit.
A015BLIE01
A0155Z7E06
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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

After replacing the headlight leveling ECU*1 or headlight swivel ECU*2 and rear height control sensor LH, initialization of the ECU is necessary (except w/ Dynamic Headlight Auto Leveling) (Click here).


  • *1: w/ Static Headlight Auto Leveling

  • *2: w/ Dynamic Headlight Auto Leveling

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PROCEDURE


  1. Click here

    CHECK FOR DTC


    1. Clear the DTCs (Click here).

    2. Check for DTCs (Click here).

      OK
      DTC B2416 or B241A output does not occur.

  2. Click here

    CHECK VEHICLE TYPE


    1. Check the vehicle type.

      Table 1. Result
      Result Proceed to
      w/ Static Headlight Auto Leveling A
      w/ Dynamic Headlight Auto Leveling, w/o Active Height Control Suspension B
      w/ Dynamic Headlight Auto Leveling, w/ Active Height Control Suspension C

  3. Click here

    READ VALUE USING INTELLIGENT TESTER (REAR HEIGHT CONTROL SENSOR)


    1. Using the intelligent tester, read the Data List (Click here).

      Table 2. HL Auto Leveling
      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 4.7 to 5.2 V -
      Rr Height Sens Signal Val Rear height control sensor signal value / 0 to 5 V Approximately 2.5 V (When vehicle level) The value changes according to the vehicle height.
      OK
      Normal conditions listed above are displayed.

  4. Click here

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


    1. Disconnect the E109 headlight leveling ECU connector.

    2. Disconnect the N7 rear height control sensor LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E109-12 (SBR) - N7-1 (SHB) Always Below 1 Ω
      E109-19 (SHRL) - N7-2 (SHRL) Always Below 1 Ω
      E109-21 (SGR) - N7-3 (SHG) Always Below 1 Ω
      E109-12 (SBR) - Body ground Always 10 kΩ or higher
      E109-19 (SHRL) - Body ground Always 10 kΩ or higher
      E109-21 (SGR) - Body ground Always 10 kΩ or higher

  5. Click here

    INSPECT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH


    1. Remove the rear height control sensor LH (Click here).

    2. Inspect the rear height control sensor LH (Click here).


  6. Click here

    READ VALUE USING INTELLIGENT TESTER (REAR HEIGHT CONTROL SENSOR)


    1. Using the intelligent tester, read the Data List (Click here).

      Table 3. AFS
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Height Sens Pw Supply Val Height control sensor power supply value / 0 to 6.25 V 4.7 to 5.2 V -
      Rr Height Sens Signal Val Rear height control sensor signal value / 0 to 5 V Approximately 2.5 V (When vehicle level) The value changes according to the vehicle height.
      OK
      Normal conditions listed above are displayed.
      Table 4. Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

  7. Click here

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


    1. Disconnect the E101 headlight swivel ECU connector.

    2. Disconnect the N7 rear height control sensor LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E101-18 (SBR) - N7-1 (SHB) Always Below 1 Ω
      E101-19 (SHRL) - N7-2 (SHRL) Always Below 1 Ω
      E109-21 (SGR) - N7-3 (SHG) Always Below 1 Ω
      E101-18 (SBR) - Body ground Always 10 kΩ or higher
      E101-19 (SHRL) - Body ground Always 10 kΩ or higher
      E109-21 (SGR) - Body ground Always 10 kΩ or higher

  8. Click here

    INSPECT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH


    1. Remove the rear height control sensor LH (Click here).

    2. Inspect the rear height control sensor LH (Click here).

      Table 5. Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

  9. Click here

    CHECK FOR DTC (ACTIVE HEIGHT CONTROL SUSPENSION)


    1. Check for DTCs (Click here).

      OK
      DTC "C1712 Front Height Control Sensor LH Circuit Malfunction" and "C1714 Rear Height Control Sensor LH Circuit Malfunction" output does not occur.

  10. Click here

    READ VALUE USING INTELLIGENT TESTER (REAR HEIGHT CONTROL SENSOR)


    1. Using the intelligent tester, read the Data List (Click here).

      Table 6. AFS
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Height Sens Pw Supply Val Height control sensor power supply value / 0 to 6.25 V 4.7 to 5.2 V -
      Fr Height Sens Signal Val Front height control sensor signal value / 0 to 5 V Approximately 2.5 V (When vehicle level) The value changes according to the vehicle height.
      Rr Height Sens Signal Val Rear height control sensor signal value / 0 to 5 V Approximately 2.5 V (When vehicle level) The value changes according to the vehicle height.
      OK
      Normal conditions listed above are displayed.
      Table 7. Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

  11. Click here

    CHECK HARNESS AND CONNECTOR (HEADLIGHT SWIVEL ECU ASSEMBLY - SUSPENSION CONTROL ECU)


    1. Disconnect the E101 headlight swivel ECU connector.

    2. Disconnect the K35 and K36 suspension control ECU connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E101-18 (SBR) - K35-23 (SHB5) Always Below 1 Ω
      E101-19 (SHRL) - K36-28 (SHR2) Always Below 1 Ω
      E101-17 (SHFL) - K35-22 (SHF2) Always Below 1 Ω
      E101-21 (SGR) - K35-11 (SHG5) Always Below 1 Ω
      E101-18 (SBR) - Body ground Always 10 kΩ or higher
      E101-19 (SHRL) - Body ground Always 10 kΩ or higher
      E101-17 (SHFL) - Body ground Always 10 kΩ or higher
      E101-21 (SGR) - Body ground Always 10 kΩ or higher

  12. Click here

    CHECK SUSPENSION CONTROL ECU


    1. A0159VRE04

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      K35-23 (SHB5) - K35-11 (SHG5) Ignition switch ON 4.5 to 5.5 V
      K35-22 (SHF2) - K35-11 (SHG5) Ignition switch ON

      Approximately 2.5 V (When vehicle level)

      (The value changes according to the vehicle height)
      K36-28 (SHR2) - K35-11 (SHG5) Ignition switch ON

      Approximately 2.5 V (When vehicle level)

      (The value changes according to the vehicle height)
      Table 8. Text in Illustration
      *a

      Component with harness connected

      (Suspension Control ECU)
      Table 9. Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

  13. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  14. Click here

    REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LHClick here

  15. Click here

    USE SIMULATION METHOD TO CHECKClick here

  16. Click here

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLYClick here

  17. Click here

    REPLACE HEADLIGHT LEVELING ECU ASSEMBLYClick here

  18. Click here

    GO TO ACTIVE HEIGHT CONTROL SUSPENSIONClick here

  19. Click here

    REPLACE SUSPENSION CONTROL ECUClick here

  20. Click here

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLYClick here