LIGHTING SYSTEM, Diagnostic DTC:B2416

DTC Code DTC Name
B2416 Height Control Sensor Malfunction

DESCRIPTION

The AFS ECU receives signals indicating the height of the vehicle from the suspension control ECU.

DTC Code DTC Detection Condition Trouble Area
B2416

  • Malfunction in suspension control ECU

  • Open or short in suspension control ECU circuit

  • Suspension control ECU

  • Harness or connector

  • AFS ECU

WIRING DIAGRAM

A01H05FE02

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTC Click here.

    2. Check for DTC Click here.

      OK
      DTC B2416 output does not occur.

    NG

    CHECK FOR DTC (AIR SUSPENSION SYSTEM) Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  2. CHECK FOR DTC (AIR SUSPENSION SYSTEM)


    1. Check for DTC 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.

    NG

    GO TO AIR SUSPENSION SYSTEM Click here

    OK

  3. READ VALUE USING GTS (AFS ECU)


    1. Using the GTS, read the Data List.

      AFS*1 or AHS*2
      Tester Display Measurement Item / Range Normal Condition Diagnostic Note
      Height Sens Pw Supply Val Height control sensor power supply value / Min.: 0 V, Max.: 6.25 V Power supply voltage to height control sensor -
      Fr Height Sens Signal Val Front height control sensor signal / Min.: 0 V, Max.: 5 V Height control sensor vehicle height value -
      Rr Height Sens Signal Val Rear height control sensor signal / Min.: 0 V, Max.: 5 V Height control sensor vehicle height value -

      • *1: w/o Adaptive High Beam System

      • *2: w/ Adaptive High Beam System


    NG

    CHECK SUSPENSION CONTROL ECU Click here

    OK

    REPLACE AFS ECU Click here

  4. CHECK SUSPENSION CONTROL ECU


    1. A01GX0CE01

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

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      A39-23 (SBL3) - A39-24 (SGL3) Power switch ON (IG) 4.5 to 5.5 V
      A39-21 (SHF2) - A39-24 (SGL3) While engine or hybrid control system is running, height control switch is changed from HIGH to NORM, and vehicle height adjustment is finished 2.20 to 2.80 V
      A39-19 (SHR2) - A39-24 (SGL3) While engine or hybrid control system is running, height control switch is changed from HIGH to NORM, and vehicle height adjustment is finished 2.21 to 2.80 V

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

      Standard resistance
      Tester Connection Condition Specified Condition
      A39-24 (SGL3) - Body ground Always Below 1 Ω
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE SUSPENSION CONTROL ECU Click here

    C

    REPLACE SUSPENSION CONTROL ECU Click here

    A

  5. CHECK HARNESS AND CONNECTOR (AFS ECU - SUSPENSION CONTROL ECU)


    1. A01GXW8E02

      Disconnect the A37 and A39 ECU connectors.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      A37-17 (SHFL) - A39-21 (SHF2) Always Below 1 Ω
      A37-18 (SBR) - A39-23 (SBL3) Always Below 1 Ω
      A37-19 (SHRL) - A39-19 (SHR2) Always Below 1 Ω
      A37-21 (SGR) - A39-24 (SGL3) Always Below 1 Ω
      A37-17 (SHFL) - Body ground Always 10 kΩ or higher
      A37-18 (SBR) - Body ground Always 10 kΩ or higher
      A37-19 (SHRL) - Body ground Always 10 kΩ or higher
      A37-21 (SGR) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE AFS ECU Click here