LIGHTING SYSTEM, Diagnostic DTC:B2416, B241A

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

DESCRIPTION

w/o Air Suspension System:

The DTC is stored when the headlight swivel ECU detects malfunctions in the rear height control sensor power source or rear height control sensor.

DTC Code DTC Detection Condition Trouble Area
B2416

  • Malfunction in the rear height control sensor.

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

  • Rear height control sensor sub-assembly

  • Headlight swivel ECU assembly

  • Harness or connector
B241A

  • Malfunction in the rear height control sensor.

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

  • Rear height control sensor sub-assembly

  • Headlight swivel ECU assembly

  • Harness or connector

w/ Air Suspension System:

The DTC is stored when the headlight swivel ECU detects malfunctions in the suspension control ECU.

DTC Code DTC Detection Condition Trouble Area
B2416

  • Malfunction in the suspension control ECU.

  • Open or short in the suspension control ECU circuit.

  • Air suspension system

  • Suspension control ECU

  • Headlight swivel ECU assembly

  • Harness or connector
B241A

  • Malfunction in the suspension control ECU.

  • Open or short in the suspension control ECU circuit.

  • Air suspension system

  • Suspension control ECU

  • Headlight swivel ECU assembly

  • Harness or connector

WIRING DIAGRAM

A01DS83E04
A01DUPEE02

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2416 or B241A output does not occur.

    NG

    CHECK VEHICLE EQUIPMENT Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  2. CHECK VEHICLE EQUIPMENT


    1. Check the vehicle equipment.

      Result
      Result Proceed to
      w/o Air Suspension System A
      w/ Air Suspension System B

    B

    CHECK FOR DTC (AIR SUSPENSION SYSTEM) Click here

    A

  3. READ VALUE USING INTELLIGENT TESTER (REAR HEIGHT CONTROL SENSOR)


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

      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 Approx. 5 V -
      Rr Height Sens Signal Val Rear height control sensor signal value / 0 to 5 V 0.5 to 4.5 V The value changes according to the vehicle height.
      OK
      Normal conditions listed above are displayed.

    NG

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

    OK

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY Click here

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


    1. Disconnect the A58 headlight swivel ECU connector.

    2. Disconnect the S3 rear height control sensor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-18 (SBF) - S3-1 (SHB) Always Below 1 Ω
      A58-19 (SHRL) - S3-2 (SHRR) Always Below 1 Ω
      A58-21 (SGF) - S3-3 (SHG) Always Below 1 Ω
      A58-18 (SBF) - Body ground Always 10 kΩ or higher
      A58-19 (SHRL) - Body ground Always 10 kΩ or higher
      A58-21 (SGF) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY


    1. Remove the rear height control sensor Click here.

      A01DQUTE04
      Text in Illustration
      *a Min. Low *b Normal
      *c Max. High - -
      A01DQPB 45° A01DMKT 45°

    2. Connect 3 dry cell batteries (1.5 V) in series.

    3. Connect the positive (+) end of the batteries to terminal 1 (SHB) of the height control sensor and the negative (-) end of the batteries to terminal 3 (SHG). While slowly moving the sensor link up and down, measure the voltage between terminal 2 (SHRR) and terminal 3 (SHG).

      Standard Voltage
      Tester Connection Condition Specified Condition
      3 (SHG) - 2 (SHRR) Max. high (45°) 4.4 to 4.6 V
      Normal (0°) 2.3 to 2.6 V
      Min. low (-45°) 0.4 to 0.6 V

      Note

      Do not apply a voltage of 5 V or higher.


    NG

    REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY Click here

    OK

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY Click here

  6. CHECK FOR DTC (AIR SUSPENSION SYSTEM)


    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" are not output.

    NG

    GO TO AIR SUSPENSION SYSTEM Click here

    OK

  7. READ VALUE USING INTELLIGENT TESTER (AFS)


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

      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 Approx. 5 V -
      Rr Height Sens Signal Val Rear height control sensor signal value / 0 to 5 V 0.5 to 4.5 V The value changes according to the vehicle height.
      OK
      Normal conditions listed above are displayed.

    NG

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

    OK

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY Click here

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


    1. Disconnect the A58 headlight swivel ECU connector.

    2. Disconnect the A14 and R19 suspension control ECU connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-18 (SBF) - A14-22 (SBL) Always Below 1 Ω
      A58-19 (SHRL) - R19-27 (SHR2) Always Below 1 Ω
      A58-21 (SGF) - A14-21 (SGL) Always Below 1 Ω
      A58-18 (SBF) - Body ground Always 10 kΩ or higher
      A58-19 (SHRL) - Body ground Always 10 kΩ or higher
      A58-21 (SGF) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. CHECK SUSPENSION CONTROL ECU (OPERATION)


    1. Temporarily replace the suspension control ECU with a new or normally functioning one Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2416 or B241A output does not occur.

    NG

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY Click here

    OK

    END (REPLACE SUSPENSION CONTROL ECU) Click here