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LIGHTING SYSTEM Stop Light Circuit

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DTC Code DTC Name
  Stop Light Circuit
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DESCRIPTION

The illumination of the stop lights is controlled by release signals sent to the No. 3 semiconductor power integration ECU from the stop light switch assembly.

B004R8UE01
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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

  • First, confirm that there is no malfunction in the power integration system. Refer to the How to Proceed with Troubleshooting procedure.

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  • First, confirm that there is no malfunction in the electronically controlled brake system. Refer to the How to Proceed with Troubleshooting procedure.

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  • After turning the power switch off, waiting time may be required before disconnecting the cable from the auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the auxiliary battery terminal notice before proceeding with work.

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PROCEDURE


  1. Click here

    READ VALUE USING GTS


    1. Depress the brake pedal.

    2. Using the GTS, read the Data List.

      Click here


      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Status of Stop Light Fuse Stop light fuse Connect or Disconnect

        Connect: Fuse not shut off

        Disconnect: Fuse shut off

        		 -



      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display
        Status of Stop Light Fuse




      OK
      The Data List value displays "Connect".
      Result
      Proceed to
      OK
      NG

  2. Click here

    READ VALUE USING GTS


    1. Using the GTS, read the Data List.

      Click here


      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Stop Light Input Signal Stop light switch assembly input signal OFF or ON

        OFF: Brake pedal released

        ON: Brake pedal depressed

        		 -



      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display
        Stop Light Input Signal




      OK
      Display changes according to the brake pedal operation.
      Result
      Proceed to
      OK
      NG

  3. Click here

    READ VALUE USING GTS


    1. Using the GTS, read the Data List.

      Click here


      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Stop Light Output Signal Stop light output condition OFF or ON

        OFF: Stop light is off

        ON: Stop light is on

        		 Stop lights blink during emergency brake signal control



      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display
        Stop Light Output Signal




      OK
      Display changes according to the brake pedal operation.
      Result
      Proceed to
      OK
      NG

  4. Click here

    CHECK HARNESS AND CONNECTOR (REAR LIGHT LENS AND BODY LH - NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU)


    1. Disconnect the cable from the negative (-) auxiliary battery terminal.

    2. Disconnect the L111 No. 3 semiconductor power integration ECU connector.

    3. Disconnect the L86 rear light lens and body LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L86-6 (B) - L111-1 (OUT) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE NO. 3 SEMICONDUCTOR POWER INTEGRATION ECUClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. Click here

    CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU)


    1. Disconnect the cable from the negative (-) auxiliary battery terminal.

    2. Disconnect the L111 No. 3 semiconductor power integration ECU connector.

    3. Disconnect the A3 stop light switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A3-2 (L) - L111-10 (STP) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE NO. 3 SEMICONDUCTOR POWER INTEGRATION ECUClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. Click here

    CHECK REAR LIGHT LENS AND BODY LH


    1. Disconnect the L86 rear light lens and body LH connector.

    2. Depress the brake pedal.

    3. Using the GTS, read the Data List.

      Click here


      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Status of Stop Light Fuse Stop light fuse Connect or Disconnect

        Connect: Fuse not shut off

        Disconnect: Fuse shut off

        		 -



      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display
        Status of Stop Light Fuse




      OK
      The Data List value displays "Connect".
      Result
      Proceed to
      OK
      NG

  7. Click here

    CHECK REAR LIGHT LED LH


    1. Remove the rear light LED LH.

      Click here

    2. Reconnect the L86 rear light lens and body LH connector.

    3. Depress the brake pedal.

    4. Using the GTS, read the Data List.

      Click here


      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Status of Stop Light Fuse Stop light fuse Connect or Disconnect

        Connect: Fuse not shut off

        Disconnect: Fuse shut off

        		 -



      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display
        Status of Stop Light Fuse




      OK
      The Data List value displays "Connect".
      Result
      Proceed to
      OK
      NG

  8. Click here

    CHECK REAR LIGHT LENS AND BODY RH


    1. Disconnect the L90 rear light lens and body RH connector.

    2. Depress the brake pedal.

    3. Using the GTS, read the Data List.

      Click here


      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Status of Stop Light Fuse Stop light fuse Connect or Disconnect

        Connect: Fuse not shut off

        Disconnect: Fuse shut off

        		 -



      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display
        Status of Stop Light Fuse




      OK
      The Data List value displays "Connect".
      Result
      Proceed to
      OK
      NG

  9. Click here

    CHECK REAR LIGHT LED RH


    1. Remove the rear light LED RH.

      Click here

    2. Reconnect the L90 rear light lens and body RH connector.

    3. Depress the brake pedal.

    4. Using the GTS, read the Data List.

      Click here


      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Status of Stop Light Fuse Stop light fuse Connect or Disconnect

        Connect: Fuse not shut off

        Disconnect: Fuse shut off

        		 -



      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display
        Status of Stop Light Fuse




      OK
      The Data List value displays "Connect".
      Result
      Proceed to
      OK
      NG

  10. Click here

    CHECK REAR COMBINATION LIGHT ASSEMBLY LH


    1. Disconnect the L82 rear combination light assembly LH connector.

    2. Depress the brake pedal.

    3. Using the GTS, read the Data List.

      Click here


      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Status of Stop Light Fuse Stop light fuse Connect or Disconnect

        Connect: Fuse not shut off

        Disconnect: Fuse shut off

        		 -



      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display
        Status of Stop Light Fuse




      OK
      The Data List value displays "Connect".
      Result
      Proceed to
      OK
      NG

  11. Click here

    CHECK REAR COMBINATION LIGHT LED LH


    1. Remove the rear combination light LED LH.

      Click here

    2. Reconnect the L82 rear combination light assembly LH connector.

    3. Depress the brake pedal.

    4. Using the GTS, read the Data List.

      Click here


      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Status of Stop Light Fuse Stop light fuse Connect or Disconnect

        Connect: Fuse not shut off

        Disconnect: Fuse shut off

        		 -



      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display
        Status of Stop Light Fuse




      OK
      The Data List value displays "Connect".
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE REAR COMBINATION LIGHT LED LHClick here

    • NG

      REPLACE REAR COMBINATION LIGHT LENS AND BODY LHClick here

  12. Click here

    CHECK REAR COMBINATION LIGHT ASSEMBLY RH


    1. Disconnect the L81 rear combination light assembly RH connector.

    2. Depress the brake pedal.

    3. Using the GTS, read the Data List.

      Click here


      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Status of Stop Light Fuse Stop light fuse Connect or Disconnect

        Connect: Fuse not shut off

        Disconnect: Fuse shut off

        		 -



      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display
        Status of Stop Light Fuse




      OK
      The Data List value displays "Connect".
      Result
      Proceed to
      OK
      NG

  13. Click here

    CHECK REAR COMBINATION LIGHT LED RH


    1. Remove the rear combination light LED RH.

      Click here

    2. Reconnect the L81 rear combination light assembly RH connector.

    3. Depress the brake pedal.

    4. Using the GTS, read the Data List.

      Click here


      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Status of Stop Light Fuse Stop light fuse Connect or Disconnect

        Connect: Fuse not shut off

        Disconnect: Fuse shut off

        		 -



      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display
        Status of Stop Light Fuse




      OK
      The Data List value displays "Connect".
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE REAR COMBINATION LIGHT LED RHClick here

    • NG

      REPLACE REAR COMBINATION LIGHT LENS AND BODY RHClick here

  14. Click here

    CHECK CENTER STOP LIGHT WIRE


    1. Disconnect the L71 center stop light wire connector.

    2. Depress the brake pedal.

    3. Using the GTS, read the Data List.

      Click here


      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Status of Stop Light Fuse Stop light fuse Connect or Disconnect

        Connect: Fuse not shut off

        Disconnect: Fuse shut off

        		 -



      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display
        Status of Stop Light Fuse




      OK
      The Data List value displays "Connect".
      Result
      Proceed to
      OK
      NG

  15. Click here

    CHECK CENTER STOP LIGHT ASSEMBLY


    1. Remove the center stop light assembly.

      Click here

    2. Reconnect the L71 center stop light wire connector.

    3. Depress the brake pedal.

    4. Using the GTS, read the Data List.

      Click here


      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Status of Stop Light Fuse Stop light fuse Connect or Disconnect

        Connect: Fuse not shut off

        Disconnect: Fuse shut off

        		 -



      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display
        Status of Stop Light Fuse




      OK
      The Data List value displays "Connect".
      Result
      Proceed to
      OK
      NG

  16. Click here

    CHECK SKID CONTROL ECU ASSEMBLY


    1. Disconnect the A11 skid control ECU assembly connector.

    2. Depress the brake pedal.

    3. Using the GTS, read the Data List.

      Click here


      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Status of Stop Light Fuse Stop light fuse Connect or Disconnect

        Connect: Fuse not shut off

        Disconnect: Fuse shut off

        		 -



      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display
        Status of Stop Light Fuse




      OK
      The Data List value displays "Connect".
      Result
      Proceed to
      OK
      NG

  17. Click here

    CHECK VEHICLE APPROACHING SPEAKER CONTROLLER


    1. Disconnect the G90 vehicle approaching speaker controller connector.

    2. Depress the brake pedal.

    3. Using the GTS, read the Data List.

      Click here


      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display Measurement Item Range Normal Condition Diagnostic Note
        Status of Stop Light Fuse Stop light fuse Connect or Disconnect

        Connect: Fuse not shut off

        Disconnect: Fuse shut off

        		 -



      1. Body Electrical > Power Integration No.3 > Data List
        Tester Display
        Status of Stop Light Fuse




      OK
      The Data List value displays "Connect".
      Result
      Proceed to
      OK
      NG

  18. Click here

    CHECK HARNESS AND CONNECTOR (REAR LIGHT LENS AND BODY LH - NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU)


    1. Disconnect the cable from the negative (-) auxiliary battery terminal.

    2. Disconnect the L111 No. 3 semiconductor power integration ECU connector.

    3. Disconnect the L86 rear light lens and body LH connector.

    4. Disconnect the L90 rear light lens and body RH connector.

    5. Disconnect the L82 rear combination light assembly LH connector.

    6. Disconnect the L81 rear combination light assembly RH connector.

    7. Disconnect the L71 center stop light wire connector.

    8. Disconnect the A11 skid control ECU assembly connector.

    9. Disconnect the G90 vehicle approaching speaker controller connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L86-6 (B) or L111-1 (OUT) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE NO. 3 SEMICONDUCTOR POWER INTEGRATION ECUClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR