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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Lighting System (W/ AFS) - Diagnostic Codes (1 Of 2) >> LIGHTING SYSTEM (w/ AFS) >> DTC B2410-87: Swivel Motor LH Missing Message; DTC B2411-87: Swivel Motor RH Missing Message [11/2023 - ] >> Procedure

DTC B2410-87: Swivel Motor LH Missing Message; DTC B2411-87: Swivel Motor RH Missing Message [11/2023 - ]: Procedure

  1. CLEAR DTC 
    1. Clear the DTCs.

      Body Electrical > Headlight Control > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. CHECK FOR DTC 
    1. Turn the ignition switch to ON.
    2. Wait 10 seconds or more.
    3. Check for DTCs.

      Body Electrical > Headlight Control > Trouble Codes 

      OK

      DTC B2410-87 and B2411-87 are not output.

      Result

      Result Proceed to
      OK A
      NG (DTC B2410-87 is output) B
      NG (DTC B2411-87 is output) C
      NG (DTC B2410-87 and B2411-87 are output) D

    Result: 

    A 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

    Result: 

    C 

    See step  4

    Result: 

    D 

    See step  7

    Result: 

    B 

    See step  3

  3. INSPECT HEADLIGHT ECU SUB-ASSEMBLY LH 
    GTY1179587Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Component without harness connected
    (Headlight ECU Sub-assembly LH)    		 - -
    1. Remove the headlight ECU sub-assembly LH.

      Refer to REMOVAL [11/2023 - ]

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      A87-19 (LINS) - C-14 (LIN2) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HEADLIGHT ASSEMBLY LH. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    NG 

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to  REMOVAL [11/2023 - ] 

  4. CHECK HARNESS AND CONNECTOR (HEADLIGHT ECU SUB-ASSEMBLY LH - HEADLIGHT ECU SUB-ASSEMBLY RH) 
    1. Disconnect the A87 headlight ECU sub-assembly LH connector.
    2. Disconnect the A16 headlight ECU sub-assembly RH connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A87-19 (LINS) - A16-19 (LINS) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  5

  5. CHECK HEADLIGHT ECU SUB-ASSEMBLY LH (LINS TERMINAL SIGNAL OUTPUT) 
    GTY1179630Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Front view of wire harness connector
    (to Headlight ECU Sub-assembly RH)
    1. Disconnect the headlight ECU sub-assembly RH connector.
    2. Using the GTS, check the waveform.

      OK

      Tester Connection Switch Condition Specified Condition
      A16-19 (LINS) - Body ground Ignition switch ON Pulse generation

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    OK 

    See step  6

  6. INSPECT HEADLIGHT ECU SUB-ASSEMBLY RH 
    GTY1179429Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Component without harness connected
    (Headlight ECU Sub-assembly RH)    		 - -
    1. Remove the headlight ECU sub-assembly RH.

      Refer to REMOVAL [11/2023 - ]

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      A16-19 (LINS) - C-14 (LIN2) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HEADLIGHT ASSEMBLY RH. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    NG 

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH. Refer to  REMOVAL [11/2023 - ] 

  7. CHECK HARNESS AND CONNECTOR (HEADLIGHT ECU SUB-ASSEMBLY LH - HEADLIGHT ECU SUB-ASSEMBLY RH) 
    1. Disconnect the A87 headlight ECU sub-assembly LH connector.
    2. Disconnect the A16 headlight ECU sub-assembly RH connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A87-19 (LINS) or A16-19 (LINS) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  8

  8. CLEAR DTC 
    1. Clear the DTCs.

      Body Electrical > Headlight Control > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  9

  9. CHECK FOR DTC 
    1. Disconnect the A16 headlight ECU sub-assembly RH connector.
    2. Turn the ignition switch ON.
    3. Wait 10 seconds or more.
    4. Check for DTCs.

      Body Electrical > Headlight Control > Trouble Codes 

      Result

      Result Proceed to
      DTC B2411-87 is output A
      DTC B2410-87 and B2411-87 are output B

    Result: 

    B 

    See step  12

    Result: 

    A 

    See step  10

  10. CLEAR DTC 
    1. Clear the DTCs.

      Body Electrical > Headlight Control > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  11

  11. CHECK FOR DTC 
    1. Remove the headlight ECU sub-assembly RH from headlight assembly RH.

      Refer to REMOVAL [11/2023 - ]

    2. Reconnect the A16 headlight ECU sub-assembly RH connector.
    3. Turn the ignition switch ON.
    4. Wait 10 seconds or more.
    5. Check for DTCs.

      Body Electrical > Headlight Control > Trouble Codes 

      Result

      Result Proceed to
      DTC B2411-87 is output A
      DTC B2410-87 and B2411-87 are output B

    Result: 

    A 

    REPLACE HEADLIGHT ASSEMBLY RH. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    B 

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY RH. Refer to  REMOVAL [11/2023 - ] 

  12. CLEAR DTC 
    1. Clear the DTCs.

      Body Electrical > Headlight Control > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  13

  13. CHECK FOR DTC 
    1. Remove the headlight ECU sub-assembly LH from headlight assembly LH.

      Refer to REMOVAL [11/2023 - ]

    2. Reconnect the A87 headlight ECU sub-assembly LH connector.
    3. Turn the ignition switch ON.
    4. Wait 10 seconds or more.
    5. Check for DTCs.

      Body Electrical > Headlight Control > Trouble Codes 

      Result

      Result Proceed to
      DTC B2410-87 is output A
      DTC B2410-87 and B2411-87 are output B

    Result: 

    A 

    REPLACE HEADLIGHT ASSEMBLY LH. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    B 

    REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to  REMOVAL [11/2023 - ] 

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