LIGHTING SYSTEM Stop Light Circuit

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.

WIRING DIAGRAM

B006EZTE01
B006APLE02

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.

    Click here

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

    Click here

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

    Click here

PROCEDURE


  1. READ VALUE USING GTS


    1. Depress the brake pedal.

    2. Using the GTS, read the Data List.

      Click here


      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

      		 -

      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

    NG

    CHECK REAR LIGHT LENS AND BODY LH Click here

    OK

  2. READ VALUE USING GTS


    1. Using the GTS, read the Data List.

      Click here


      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

      		 -

      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

    NG

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

    OK

  3. READ VALUE USING GTS


    1. Using the GTS, read the Data List.

      Click here


      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

      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

    NG

    REPLACE NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU Click here

    OK

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


    1. Disconnect the cable from the negative (-) 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 ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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


    1. Disconnect the cable from the negative (-) 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 ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. 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


      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

      		 -

      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

    NG

    CHECK REAR LIGHT LENS AND BODY RH Click here

    OK

  7. 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


      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

      		 -

      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 LIGHT LED LH Click here

    NG

    REPLACE REAR LIGHT LENS AND BODY LH Click here

  8. 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


      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

      		 -

      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

    NG

    CHECK REAR COMBINATION LIGHT ASSEMBLY LH Click here

    OK

  9. 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


      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

      		 -

      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 LIGHT LED RH Click here

    NG

    REPLACE REAR LIGHT LENS AND BODY RH Click here

  10. 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


      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

      		 -

      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

    NG

    CHECK REAR COMBINATION LIGHT ASSEMBLY RH Click here

    OK

  11. 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


      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

      		 -

      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 LH Click here

    NG

    REPLACE REAR COMBINATION LIGHT LENS AND BODY LH Click here

  12. 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


      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

      		 -

      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

    NG

    CHECK CENTER STOP LIGHT WIRE Click here

    OK

  13. 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


      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

      		 -

      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 RH Click here

    NG

    REPLACE REAR COMBINATION LIGHT LENS AND BODY RH Click here

  14. 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


      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

      		 -

      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

    NG

    CHECK BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here

    OK

  15. 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


      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

      		 -

      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 CENTER STOP LIGHT ASSEMBLY Click here

    NG

    REPLACE CENTER STOP LIGHT WIRE Click here

  16. CHECK BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)


    1. Disconnect the A11 brake actuator assembly (skid control ECU) connector.

    2. Depress the brake pedal.

    3. Using the GTS, read the Data List.

      Click here


      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

      		 -

      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 BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) for LHD: REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here
    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) for RHD: REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here

    NG

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


    1. Disconnect the cable from the negative (-) 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 A9 brake actuator assembly (skid control ECU) connector.

    9. 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 ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR