ELECTRONICALLY CONTROLLED BRAKE SYSTEM(w/ Vacuum Brake Booster), Diagnostic DTC:C1380

DTC Code DTC Name
C1380 Stop Light Control Relay Malfunction

DESCRIPTION

When the brake hold system or dynamic radar cruise control system operates, the skid control ECU (brake actuator assembly) turns ON the stop light drive output (STPO) to operate the No. 3 semiconductor power integration ECU and illuminate the stop light.

B006CUUE04
DTC No. Detection Item DTC Detection Condition Trouble Area Note
C1380 Stop Light Control Relay Malfunction

  • When the voltage at terminal +BS is 9.5 V or higher, stop light drive output (STPO) is ON, EXO is OFF and STP2 is OFF for 5 seconds or more*1.

  • When the voltage at terminal +BS is 9.5 V or higher, stop light drive output (STPO) is ON, STP2 is OFF for 5 seconds or more*2.

  • When the voltage at terminal +BS is 9.5 V or higher, stop light drive output (STPO) is OFF, EXO is OFF and input signals for STP and STP2 differ for 5 seconds or more*1.

  • When the voltage at terminal +BS is 9.5 V or higher, stop light drive output (STPO) is OFF, input signals for STP and STP2 differ for 5 seconds or more*2.

  • Wire harness or connector

  • Rear light LED LH

  • Rear light lens and body LH

  • Rear light LED RH

  • Rear light lens and body RH

  • Rear combination light LED LH

  • Rear combination light lens and body LH

  • Rear combination light LED RH

  • Rear combination light lens and body RH

  • Center stop light assembly

  • Center stop light wire

  • Stop light switch assembly

  • No. 3 semiconductor power integration ECU

  • Skid control ECU (Brake actuator assembly)

 -

C1380 DTC Detection Conditions
Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4
Diagnosis Condition - - - - -
Malfunction Status When the voltage at terminal +BS is 9.5 V or higher, stop light drive output (STPO) is ON, EXO is OFF and STP2 is OFF*1 ○ - - -
When the voltage at terminal +BS is 9.5 V or higher, stop light drive output (STPO) is ON, STP2 is OFF*2 - ○ - -
When the voltage at terminal +BS is 9.5 V or higher, stop light drive output (STPO) is OFF, EXO is OFF and input signals for STP and STP2 differ*1 - - ○ -
When the voltage at terminal +BS is 9.5 V or higher, stop light drive output (STPO) is OFF, input signals for STP and STP2 differ*2 - - - ○
Detection Time 5 seconds or more. 5 seconds or more. 5 seconds or more. 5 seconds or more.
Number of Trips 1 trip 1 trip 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

WIRING DIAGRAM

B006CS4E02
B0069K2E01

CAUTION / NOTICE / HINT

Note


  • When replacing the skid control ECU (brake actuator assembly), perform zero point calibration and store system information.

    Click here

  • Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE


  1. CHECK FOR DTCs (POWER INTEGRATION SYSTEM)


    1. Check for DTCs.

      Click here


      Body Electrical > Power Integration No.3 > Trouble Codes

      Tech Tips

      If there is a malfunction in the No. 3 semiconductor power integration ECU, integration relay system DTCs may also have been detected. Check the integration relay system first.

      Result
      Result Proceed to
      Power integration system DTCs are not output A
      Power integration system DTCs are output B

    B

    GO TO POWER INTEGRATION SYSTEM Click here

    A

  2. READ VALUE USING GTS (STOP LIGHT INPUT SIGNAL, STOP LIGHT OUTPUT SIGNAL, STOP LIGHT SW AND STOP LIGHT RELAY)


    1. Using the GTS, check the Data List "Stop Light Input Signal", "Stop Light Output Signal", "Stop Light SW" and "Stop Light Relay" with the brake pedal operated.

      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 condition ON or OFF

      OFF: Brake pedal released

      ON: Brake pedal depressed

      		 -
      Stop Light Output Signal Stop light output condition ON or OFF

      ON: Stop light is on

      OFF: Stop light is off

      		 w/ Emergency Brake Signal: Stop lights blink during emergency brake signal control

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

      Chassis > ABS/VSC/TRC > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Stop Light SW Stop light switch assembly ON or OFF

      ON: Brake pedal depressed

      OFF: Brake pedal released

      		 -
      Stop Light Relay No. 3 Semiconductor power integration ECU (STP2 terminal input) ON or OFF

      ON: Brake pedal depressed

      OFF: Brake pedal released

      		 -

      Chassis > ABS/VSC/TRC > Data List
      Tester Display
      Stop Light SW
      Stop Light Relay
      OK
      Brake pedal operation Data List Display Condition
      No. 3 Semiconductor Power Integration ECU Skid control ECU (brake actuator assembly)
      Stop Light Input Signal Stop Light Output Signal Stop Light Switch Stop Light Relay
      Brake pedal depressed ON ON ON ON
      Result
      Brake pedal operation Data List Display Condition Result
      No. 3 Semiconductor Power Integration ECU Skid control ECU (brake actuator assembly)
      Stop Light Input Signal Stop Light Output Signal Stop Light Switch Stop Light Relay
      Brake pedal depressed ON ON ON ON A
      ON ON OFF ON B
      ON OFF ON OFF C
      ON ON ON OFF D
      OFF OFF ON OFF E

    B

    CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU) Click here

    C

    READ VALUE USING GTS (STOP LIGHT OUTPUT SIGNAL AND STATUS OF STOP LIGHT FUSE) Click here

    D

    CHECK HARNESS AND CONNECTOR (STP2 TERMINAL) Click here

    E

    CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU) Click here

    A

  3. READ VALUE USING GTS (STOP LIGHT INPUT SIGNAL, STOP LIGHT OUTPUT SIGNAL, STOP LIGHT SW AND STOP LIGHT RELAY)


    1. Using the GTS, check the Data List "Stop Light Input Signal", "Stop Light Output Signal", "Stop Light SW" and "Stop Light Relay" with the brake pedal operated.

      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 condition ON or OFF

      ON: Brake pedal depressed

      OFF: Brake pedal released

      		 -
      Stop Light Output Signal Stop light output condition ON or OFF

      ON: Stop light is on

      OFF: Stop light is off

      		 w/ Emergency Brake Signal: Stop lights blink during emergency brake signal control

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

      Chassis > ABS/VSC/TRC > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Stop Light SW Stop light switch assembly ON or OFF

      ON: Brake pedal depressed

      OFF: Brake pedal released

      		 -
      Stop Light Relay No. 3 Semiconductor power integration ECU (STP2 terminal input) ON or OFF

      ON: Brake pedal depressed

      OFF: Brake pedal released

      		 -

      Chassis > ABS/VSC/TRC > Data List
      Tester Display
      Stop Light SW
      Stop Light Relay
      OK
      Brake pedal operation Data List Display Condition
      No. 3 Semiconductor Power Integration ECU Skid control ECU (brake actuator assembly)
      Stop Light Input Signal Stop Light Output Signal Stop Light Switch Stop Light Relay
      Brake pedal depressed OFF OFF OFF OFF
      Result
      Brake pedal operation Data List Display Condition Result
      No. 3 Semiconductor Power Integration ECU Skid control ECU (brake actuator assembly)
      Stop Light Input Signal Stop Light Output Signal Stop Light Switch Stop Light Relay
      Brake pedal depressed OFF OFF OFF OFF A
      OFF ON OFF ON B

    B

    READ VALUE USING GTS (RADAR CRUISE INPUT SIGNAL, STOP LIGHT OUTPUT SIGNAL, STOP LIGHT RELAY AND STOP LIGHT RELAY OUTPUT) Click here

    A

  4. PERFORM ACTIVE TEST USING GTS (STOP LIGHT RELAY)


    1. Enter the following menus: Chassis / ABS/VSC/TRC / Active Test.

    2. Perform "Active Test" according to the display on the GTS.


      Chassis > ABS/VSC/TRC > Active Test
      Tester Display Measurement Item Restrict Condition Diagnostic Note
      Stop Light Relay No. 3 Semiconductor power integration ECU ECU (Stop light output) ON/OFF Stop lights come on

      Chassis > ABS/VSC/TRC > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Stop Light Relay No. 3 Semiconductor power integration ECU (STP2 terminal input) ON or OFF

      ON: Brake pedal depressed

      OFF: Brake pedal released

      		 -
      Stop Light Relay Output No. 3 semiconductor power integration ECU (STPO terminal output) ON or OFF

      ON: Output on

      OFF: Output off

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Radar Cruise Input Signal Radar cruise operation condition ON or OFF

      ON: Radar cruise system operates

      OFF: Radar cruise system does not operate

      		 -
      Stop Light Output Signal Stop light output condition Stop light output condition

      ON: Stop light is on

      OFF: Stop light is off

      		 w/ Emergency Brake Signal: Stop lights blink during emergency brake signal control

      Chassis > ABS/VSC/TRC > Active Test
      Active Test Display
      Stop Light Relay
      Data List Display
      Stop Light Relay
      Stop Light Relay Output
      Data List Display
      Radar Cruise Input Signal
      Stop Light Output Signal
      OK
      Active Test Condition Data List Display Condition
      Stop Light Relay Skid control ECU (brake actuator assembly) No. 3 Semiconductor Power Integration ECU
      Stop Light Relay Stop Light Relay Output Radar Cruise Input Signal Stop Light Output Signal
      ON ON ON ON ON
      Result
      Active Test Condition Data List Display Condition Result
      Stop Light Relay Skid control ECU (brake actuator assembly) No. 3 Semiconductor Power Integration ECU
      Stop Light Relay Stop Light Relay Output Radar Cruise Input Signal Stop Light Output Signal
      ON ON ON ON ON A
      OFF ON ON OFF B
      OFF OFF OFF OFF C

    B

    REPLACE NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU Click here

    C

    CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU) Click here

    A

  5. RECONFIRM DTC


    1. Clear the DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Clear DTCs

    2. Perform "Active Test" according to the display on the GTS.


      Chassis > ABS/VSC/TRC > Active Test
      Tester Display Measurement Item Restrict Condition Diagnostic Note
      Stop Light Relay No. 3 Semiconductor power integration ECU ECU (Stop light output) ON/OFF Stop lights come on

      Chassis > ABS/VSC/TRC > Active Test
      Tester Display
      Stop Light Relay

      Note

      Perform the Active Test "Stop Light Relay" for 2 seconds or more.

      Tech Tips

      By performing the Active Test, DTCs can be detected.

    3. Check if the same DTC is output.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      DTC C1380 is not output. A
      DTC C1380 is output. B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY for LHD: Click here
    REPLACE BRAKE ACTUATOR ASSEMBLY for RHD: Click here

  6. CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU)


    1. Disconnect the A9 skid control ECU (brake actuator assembly) connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A9-35 (STP) - L111-10 (STP) Always Below 1 Ω
      A9-35 (STP) or L111-10 (STP) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY for LHD: Click here
    REPLACE BRAKE ACTUATOR ASSEMBLY for RHD: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. READ VALUE USING GTS (RADAR CRUISE INPUT SIGNAL, STOP LIGHT OUTPUT SIGNAL, STOP LIGHT RELAY AND STOP LIGHT RELAY OUTPUT)


    1. Using the GTS, check the Data List "Radar Cruise Input Signal", "Stop Light Output Signal", "Stop Light Relay" and "Stop Light Relay Output" with the brake pedal operated.

      Click here


      Body Electrical > Power Integration No.3 > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Radar Cruise Input Signal Radar cruise operation condition ON or OFF

      ON: Radar cruise system operates

      OFF: Radar cruise system does not operate

      		 -
      Stop Light Output Signal Stop light output condition ON or OFF

      ON: Stop light is on

      OFF: Stop light is off

      		 w/ Emergency Brake Signal: Stop lights blink during emergency brake signal control

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

      Chassis > ABS/VSC/TRC > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Stop Light Relay No. 3 Semiconductor power integration ECU (STP2 terminal input) ON or OFF

      ON: Brake pedal depressed

      OFF: Brake pedal released

      		 -
      Stop Light Relay Output No. 3 Semiconductor power integration ECU (STPO terminal input) ON or OFF

      ON: Output on

      OFF: Output off

      		 -

      Chassis > ABS/VSC/TRC > Data List
      Tester Display
      Stop Light Relay
      Stop Light Relay Output
      OK
      Brake pedal operation Data List Display Condition
      No. 3 Semiconductor Power Integration ECU Skid control ECU (brake actuator assembly)
      Radar Cruise Input Signal Stop Light Output Signal Stop Light Relay Stop Light Relay Output
      Brake pedal depressed OFF OFF OFF OFF
      Result
      Brake pedal operation Data List Display Condition Result
      No. 3 Semiconductor Power Integration ECU Skid control ECU (brake actuator assembly)
      Radar Cruise Input Signal Stop Light Output Signal Stop Light Relay Stop Light Relay Output
      Brake pedal depressed ON ON ON ON A
      ON ON ON OFF B
      OFF ON ON OFF C

    A

    REPLACE BRAKE ACTUATOR ASSEMBLY for LHD: Click here
    REPLACE BRAKE ACTUATOR ASSEMBLY for RHD: Click here

    C

    REPLACE NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU Click here

    B

  8. CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU)


    1. Disconnect the A9 skid control ECU (brake actuator assembly) connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A9-26 (STPO) - L111-14 (ACC) Always Below 1 Ω
      A9-26 (STPO) or L111-14 (ACC) - 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

  9. CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU)


    1. Disconnect the A9 skid control ECU (brake actuator assembly) connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A9-26 (STPO) - L111-14 (ACC) Always Below 1 Ω
      A9-26 (STPO) or L111-14 (ACC) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK HARNESS AND CONNECTOR (STPO TERMINAL)


    1. Disconnect the A9 skid control ECU (brake actuator assembly) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A9-26 (STPO) - Body ground Engine switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY for LHD: Click here
    REPLACE BRAKE ACTUATOR ASSEMBLY for RHD: Click here

    NG

    REPLACE NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU Click here

  11. READ VALUE USING GTS (STOP LIGHT OUTPUT SIGNAL AND STATUS OF STOP LIGHT FUSE)


    1. Using the GTS, check the Data List "Stop Light Output Signal" and "Status of Stop Light Fuse" with the brake pedal operated.

      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 ON or OFF

      ON: Stop light is on

      OFF: Stop light is off

      		 w/ Emergency Brake Signal: Stop lights blink during emergency brake signal control
      Status of Stop Light Fuse Stop light fuse condition Disconnect or Connect

      Disconnect: Fuse shut off

      Connect: Fuse not shut off

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Stop Light Output Signal
      Status of Stop Light Fuse
      OK
      Brake pedal operation Data List Display Condition
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect
      Result
      Brake pedal operation Data List Display Condition Result
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed OFF Connect A
      OFF Disconnect B

    A

    REPLACE NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU Click here

    B

  12. READ VALUE USING GTS (STOP LIGHT OUTPUT SIGNAL AND STATUS OF STOP LIGHT FUSE)


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

    2. Using the GTS, check the Data List "Stop Light Output Signal" and "Status of Stop Light Fuse" with the brake pedal operated.

      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 ON or OFF

      ON: Stop light is on

      OFF: Stop light is off

      		 w/ Emergency Brake Signal: Stop lights blink during emergency brake signal control
      Status of Stop Light Fuse Stop light fuse condition Disconnect or Connect

      Disconnect: Fuse shut off

      Connect: Fuse not shut off

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Stop Light Output Signal
      Status of Stop Light Fuse
      Standard
      Brake pedal operation Data List Display Condition
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect
      Result
      Brake pedal operation Data List Display Condition Result
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect A
      OFF Disconnect B

    B

    READ VALUE USING GTS (STOP LIGHT OUTPUT SIGNAL AND STATUS OF STOP LIGHT FUSE) Click here

    A

  13. READ VALUE USING GTS (STOP LIGHT OUTPUT SIGNAL AND STATUS OF STOP LIGHT FUSE)


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

    2. Disconnect the rear light LED LH connector.

      Tech Tips

      Click here

    3. Using the GTS, check the Data List "Stop Light Output Signal" and "Status of Stop Light Fuse" with the brake pedal operated.

      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 ON or OFF

      ON: Stop light is on

      OFF: Stop light is off

      		 w/ Emergency Brake Signal: Stop lights blink during emergency brake signal control
      Status of Stop Light Fuse Stop light fuse condition Disconnect or Connect

      Disconnect: Fuse shut off

      Connect: Fuse not shut off

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Stop Light Output Signal
      Status of Stop Light Fuse
      Standard
      Brake pedal operation Data List Display Condition
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect
      Result
      Brake pedal operation Data List Display Condition Result
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect A
      OFF Disconnect B

    A

    REPLACE REAR LIGHT LED Click here

    B

    REPLACE REAR LIGHT LENS AND BODY LH Click here

  14. READ VALUE USING GTS (STOP LIGHT OUTPUT SIGNAL AND STATUS OF STOP LIGHT FUSE)


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

    2. Using the GTS, check the Data List "Stop Light Output Signal" and "Status of Stop Light Fuse" with the brake pedal operated.

      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 ON or OFF

      ON: Stop light is on

      OFF: Stop light is off

      		 w/ Emergency Brake Signal: Stop lights blink during emergency brake signal control
      Status of Stop Light Fuse Stop light fuse condition Disconnect or Connect

      Disconnect: Fuse shut off

      Connect: Fuse not shut off

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Stop Light Output Signal
      Status of Stop Light Fuse
      Standard
      Brake pedal operation Data List Display Condition
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect
      Result
      Brake pedal operation Data List Display Condition Result
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect A
      OFF Disconnect B

    B

    READ VALUE USING GTS (STOP LIGHT OUTPUT SIGNAL AND STATUS OF STOP LIGHT FUSE) Click here

    A

  15. READ VALUE USING GTS (STOP LIGHT OUTPUT SIGNAL AND STATUS OF STOP LIGHT FUSE)


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

    2. Disconnect the rear light LED RH connector.

      Tech Tips

      Click here

    3. Using the GTS, check the Data List "Stop Light Output Signal" and "Status of Stop Light Fuse" with the brake pedal operated.

      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 ON or OFF

      ON: Stop light is on

      OFF: Stop light is off

      		 w/ Emergency Brake Signal: Stop lights blink during emergency brake signal control
      Status of Stop Light Fuse Stop light fuse condition Disconnect or Connect

      Disconnect: Fuse shut off

      Connect: Fuse not shut off

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Stop Light Output Signal
      Status of Stop Light Fuse
      Standard
      Brake pedal operation Data List Display Condition
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect
      Result
      Brake pedal operation Data List Display Condition Result
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect A
      OFF Disconnect B

    A

    REPLACE REAR LIGHT LED Click here

    B

    REPLACE REAR LIGHT LENS AND BODY RH Click here

  16. READ VALUE USING GTS (STOP LIGHT OUTPUT SIGNAL AND STATUS OF STOP LIGHT FUSE)


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

    2. Using the GTS, check the Data List "Stop Light Output Signal" and "Status of Stop Light Fuse" with the brake pedal operated.

      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 ON or OFF

      ON: Stop light is on

      OFF: Stop light is off

      		 w/ Emergency Brake Signal: Stop lights blink during emergency brake signal control
      Status of Stop Light Fuse Stop light fuse condition Disconnect or Connect

      Disconnect: Fuse shut off

      Connect: Fuse not shut off

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Stop Light Output Signal
      Status of Stop Light Fuse
      Standard
      Brake pedal operation Data List Display Condition
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect
      Result
      Brake pedal operation Data List Display Condition Result
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect A
      OFF Disconnect B

    B

    READ VALUE USING GTS (STOP LIGHT OUTPUT SIGNAL AND STATUS OF STOP LIGHT FUSE) Click here

    A

  17. READ VALUE USING GTS (STOP LIGHT OUTPUT SIGNAL AND STATUS OF STOP LIGHT FUSE)


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

    2. Disconnect the rear combination light LED LH connector.

      Tech Tips

      Click here

    3. Using the GTS, check the Data List "Stop Light Output Signal" and "Status of Stop Light Fuse" with the brake pedal operated.

      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 ON or OFF

      ON: Stop light is on

      OFF: Stop light is off

      		 w/ Emergency Brake Signal: Stop lights blink during emergency brake signal control
      Status of Stop Light Fuse Stop light fuse condition Disconnect or Connect

      Disconnect: Fuse shut off

      Connect: Fuse not shut off

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Stop Light Output Signal
      Status of Stop Light Fuse
      Standard
      Brake pedal operation Data List Display Condition
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect
      Result
      Brake pedal operation Data List Display Condition Result
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect A
      OFF Disconnect B

    A

    REPLACE REAR COMBINATION LIGHT LED Click here

    B

    REPLACE REAR COMBINATION LIGHT LENS AND BODY LH Click here

  18. CHECK HARNESS AND CONNECTOR (STP2 TERMINAL)


    1. Disconnect the A9 skid control ECU (brake actuator assembly) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A9-5 (STP2) - Body ground Brake pedal depressed 8 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY for LHD: Click here
    REPLACE BRAKE ACTUATOR ASSEMBLY for RHD: Click here

    NG

  19. CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU)


    1. Disconnect the A9 skid control ECU (brake actuator assembly) connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A9-5 (STP2) - L111-1 (OUT) Always Below 1 Ω
      A9-5 (STP2) 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

  20. READ VALUE USING GTS (STOP LIGHT OUTPUT SIGNAL AND STATUS OF STOP LIGHT FUSE)


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

    2. Using the GTS, check the Data List "Stop Light Output Signal" and "Status of Stop Light Fuse" with the brake pedal operated.

      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 ON or OFF

      ON: Stop light is on

      OFF: Stop light is off

      		 w/ Emergency Brake Signal: Stop lights blink during emergency brake signal control
      Status of Stop Light Fuse Stop light fuse condition Disconnect or Connect

      Disconnect: Fuse shut off

      Connect: Fuse not shut off

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Stop Light Output Signal
      Status of Stop Light Fuse
      Standard
      Brake pedal operation Data List Display Condition
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect
      Result
      Brake pedal operation Data List Display Condition Result
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect A
      OFF Disconnect B

    B

    READ VALUE USING GTS (STOP LIGHT OUTPUT SIGNAL AND STATUS OF STOP LIGHT FUSE) Click here

    A

  21. READ VALUE USING GTS (STOP LIGHT OUTPUT SIGNAL AND STATUS OF STOP LIGHT FUSE)


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

    2. Disconnect the rear combination light LED RH connector.

      Tech Tips

      Click here

    3. Using the GTS, check the Data List "Stop Light Output Signal" and "Status of Stop Light Fuse" with the brake pedal operated.

      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 ON or OFF

      ON: Stop light is on

      OFF: Stop light is off

      		 w/ Emergency Brake Signal: Stop lights blink during emergency brake signal control
      Status of Stop Light Fuse Stop light fuse condition Disconnect or Connect

      Disconnect: Fuse shut off

      Connect: Fuse not shut off

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Stop Light Output Signal
      Status of Stop Light Fuse
      Standard
      Brake pedal operation Data List Display Condition
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect
      Result
      Brake pedal operation Data List Display Condition Result
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect A
      OFF Disconnect B

    A

    REPLACE REAR COMBINATION LIGHT LED Click here

    B

    REPLACE REAR COMBINATION LIGHT LENS AND BODY RH Click here

  22. CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU)


    1. Disconnect the A9 skid control ECU (brake actuator assembly) assembly connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A9-35 (STP) - L111-10 (STP) Always Below 1 Ω
      A9-35 (STP) or L111-10 (STP) - 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

  23. READ VALUE USING GTS (STOP LIGHT OUTPUT SIGNAL AND STATUS OF STOP LIGHT FUSE)


    1. Disconnect the A center stop light assembly connector.

    2. Using the GTS, check the Data List "Stop Light Output Signal" and "Status of Stop Light Fuse" with the brake pedal operated.

      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 ON or OFF

      ON: Stop light is on

      OFF: Stop light is off

      		 w/ Emergency Brake Signal: Stop lights blink during emergency brake signal control
      Status of Stop Light Fuse Stop light fuse condition Disconnect or Connect

      Disconnect: Fuse shut off

      Connect: Fuse not shut off

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Stop Light Output Signal
      Status of Stop Light Fuse
      OK
      Brake pedal operation Data List Display Condition
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect
      Result
      Brake pedal operation Data List Display Condition Result
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect A
      OFF Disconnect B

    A

    REPLACE CENTER STOP LIGHT ASSEMBLY Click here

    B

  24. READ VALUE USING GTS (STOP LIGHT OUTPUT SIGNAL AND STATUS OF STOP LIGHT FUSE)


    1. Connect the A center stop light assembly connector.

    2. Disconnect the L71 center stop light wire connector.

    3. Using the GTS, check the Data List "Stop Light Output Signal" and "Status of Stop Light Fuse" with the brake pedal operated.

      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 ON or OFF

      ON: Stop light is on

      OFF: Stop light is off

      		 w/ Emergency Brake Signal: Stop lights blink during emergency brake signal control
      Status of Stop Light Fuse Stop light fuse condition Disconnect or Connect

      Disconnect: Fuse shut off

      Connect: Fuse not shut off

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Stop Light Output Signal
      Status of Stop Light Fuse
      OK
      Brake pedal operation Data List Display Condition
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect
      Result
      Brake pedal operation Data List Display Condition Result
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect A
      OFF Disconnect B

    A

    REPLACE CENTER STOP LAIGHT WIRE Click here

    B

  25. READ VALUE USING GTS (STOP LIGHT OUTPUT SIGNAL AND STATUS OF STOP LIGHT FUSE)


    1. Disconnect the A9 skid control ECU (brake actuator assembly) connector.

    2. Using the GTS, check the Data List "Stop Light Output Signal" and "Status of Stop Light Fuse" with the brake pedal operated.

      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 ON or OFF

      ON: Stop light is on

      OFF: Stop light is off

      		 w/ Emergency Brake Signal: Stop lights blink during emergency brake signal control
      Status of Stop Light Fuse Stop light fuse condition Disconnect or Connect

      Disconnect: Fuse shut off

      Connect: Fuse not shut off

      		 -

      Body Electrical > Power Integration No.3 > Data List
      Tester Display
      Stop Light Output Signal
      Status of Stop Light Fuse
      OK
      Brake pedal operation Data List Display Condition
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect
      Result
      Brake pedal operation Data List Display Condition Result
      Stop Light Output Signal Status of Stop Light Fuse
      Brake pedal depressed ON Connect A
      OFF Disconnect B

    A

    REPLACE BRAKE ACTUATOR ASSEMBLY for LHD: Click here
    REPLACE BRAKE ACTUATOR ASSEMBLY for RHD: Click here

    B

  26. CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - NO. 3 SEMICONDUCTOR POWER INTEGRATION ECU)


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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L111-1 (OUT) - A9-5 (STP2) Always Below 1 Ω
      L111-1 (OUT) or A9-5 (STP2) - 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