DYNAMIC RADAR CRUISE CONTROL SYSTEM, Diagnostic DTC:P057113

DTC Code DTC Name
P057113 Brake Switch "A" Circuit Open

DESCRIPTION

When the brakes are applied by the dynamic radar cruise control system, the skid control ECU (brake actuator assembly) operates the stop light control ECU assembly to illuminate the stop lights.

If the ECM receives a stop light control ECU assembly malfunction signal from the skid control ECU (brake actuator assembly), DTC P057113 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
P057113 Brake Switch "A" Circuit Open

    w/o Full-speed range following function:

  • While the vehicle speed is 36 km/h (22 mph) or more and the dynamic radar cruise control system is operating, the ECM receives a stop light control ECU assembly malfunction signal from the skid control ECU (brake actuator assembly) for approximately 0.5 seconds or more.


    w/ Full-speed range following function:

  • While the vehicle speed is 5 km/h (3 mph) or more and the dynamic radar cruise control system is operating, the ECM receives a stop light control ECU assembly malfunction signal from the skid control ECU (brake actuator assembly) for approximately 0.5 seconds or more.

  • Skid control ECU (brake actuator assembly)

  • Stop light control ECU assembly

  • Stop light switch assembly

  • Rear combination light assembly LH

  • Rear combination light assembly RH

  • Rear light assembly LH

  • Rear light assembly RH

  • Center stop light assembly

  • ECM

  • Shift lock control unit assembly

  • Certification ECU (smart key ECU assembly)

  • Harness or connector

WIRING DIAGRAM

B008IHKE01
B008JAWE01

CAUTION / NOTICE / HINT

Note


  • Before replacing the certification ECU (smart key ECU assembly), refer to smart entry and start system (for Entry Function) Precaution.

    Click here

  • Before replacing the ECM, refer to Service Bulletin.

  • First check the CAN communication system by following How to Proceed with Troubleshooting. After checking that there are no malfunctions in the CAN communication system, proceed with troubleshooting.

    Click here

PROCEDURE


  1. INSPECT TERMINAL VOLTAGE (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) CONNECTOR)


    1. Turn the engine switch off.

    2. B008H9EC18
      *a

      Front view of wire harness connector

      (to Skid control ECU (Brake actuator assembly))

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

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A36-35 (STP) - Body ground Brake pedal depressed 8 to 14 V
      Brake pedal released Below 1.5 V
      A36-26 (STPO) - Body ground Engine switch on (IG) 11 to 14 V
      A36-5 (STP2) - Body ground Brake pedal depressed 8 to 14 V
      Brake pedal released Below 1.5 V

    4. Connect the skid control ECU (brake actuator assembly) connector.

      Result
      Result Proceed to
      All terminal voltage is normal A
      Only STP terminal voltage abnormal B
      Only STPO terminal voltage abnormal C
      Only STP2 terminal voltage abnormal D
      STPO terminal and STP2 terminal voltage abnormal E

    B

    INSPECT TERMINAL VOLTAGE (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) CONNECTOR) Click here

    C

    CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - STOP LIGHT CONTROL ECU ASSEMBLY) Click here

    D

    CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - STOP LIGHT CONTROL ECU ASSEMBLY) Click here

    E

    CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - STOP LIGHT CONTROL ECU ASSEMBLY) Click here

    A

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


    1. Turn the engine switch off.

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

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

      Click here


      Chassis > ABS/VSC/TRC > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Stop Light Relay Stop light control ECU assembly ECU (Relay) ON/OFF

      Stop lights come on

      Vehicle condition: Vehicle stopped

      Chassis > ABS/VSC/TRC > Active Test
      Tester Display
      Stop Light Relay
      OK
      Stop light turns ON/OFF in response to the GTS operation
      Result
      Proceed to
      OK
      NG

    NG

    INSPECT SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) Click here

    OK

  3. CHECK FOR DTC (RADAR CRUISE 1)


    1. Clear the DTCs.

      Click here


      Powertrain > Cruise Control > Clear DTCs

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

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

      Click here


      Chassis > ABS/VSC/TRC > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Stop Light Relay Stop light control ECU assembly ECU (Relay) ON/OFF

      Stop lights come on

      Vehicle condition: Vehicle stopped

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

    4. Check for DTCs.

      Click here


      Powertrain > Cruise Control > Trouble Codes
      Result
      Result Proceed to
      DTC P057113 is not output. A
      DTC P057113 is output. B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) Click here

  4. INSPECT SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)


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

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

      Click here


      Chassis > ABS/VSC/TRC > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Stop Light Relay Stop light control ECU assembly ECU (Relay) ON/OFF

      Stop lights come on

      Vehicle condition: Vehicle stopped

      Chassis > ABS/VSC/TRC > Active Test
      Tester Display
      Stop Light Relay
    3. B008HTHC34
      *a Component with harness connected (Stop Light Control ECU Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A3-9 (ACC) - Body ground Active Test is ON Below 1.5 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE STOP LIGHT CONTROL ECU ASSEMBLY for LHD: Click here
    REPLACE STOP LIGHT CONTROL ECU ASSEMBLY for RHD: Click here

    NG

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) Click here

  5. INSPECT TERMINAL VOLTAGE (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) CONNECTOR)


    1. Turn the engine switch off.

    2. B008H9EC19
      *a

      Front view of wire harness connector

      (to Skid control ECU (Brake actuator assembly))

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

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A36-35 (STP) - Body ground Brake pedal released Below 1.5 V

    4. Connect the skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    NG

    INSPECT STOP LIGHT SWITCH ASSEMBLY Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - ECM)


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the A35 ECM connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A36-35 (STP) or A35-9 (STP) - Body ground Brake pedal depressed 8 to 14 V

    5. Connect the A35 ECM connector.

    6. Connect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

  7. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - SHIFT LOCK CONTROL UNIT ASSEMBLY)


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the A35 ECM connector.

    4. Disconnect the I22 shift lock control unit assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A36-35 (STP) or I22-4 (STP) - Body ground Brake pedal depressed 8 to 14 V

    6. Disconnect the I22 shift lock control unit assembly connector.

    7. Disconnect the A35 ECM connector.

    8. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY for U661E: Click here
    REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY for U661F: Click here

    NG

  8. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the A35 ECM connector.

    4. Disconnect the I22 shift lock control unit assembly connector.

    5. Disconnect the I51 certification ECU (smart key ECU assembly) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A36-35 (STP) or I51-2 (STP1) - Body ground Brake pedal depressed 8 to 14 V

    7. Connect the I51 certification ECU (smart key ECU assembly) connector.

    8. Connect the I22 shift lock control unit assembly connector.

    9. Connect the A35 ECM connector.

    10. Connect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    CHECK WIRE HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - STOP LIGHT SWITCH ASSEMBLY) Click here

  9. INSPECT STOP LIGHT SWITCH ASSEMBLY


    1. Inspect the stop light switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    NG

    REPLACE STOP LIGHT SWITCH ASSEMBLY Click here

  10. CHECK WIRE HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - STOP LIGHT SWITCH ASSEMBLY)


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the A35 ECM connector.

    4. Disconnect the I22 shift lock control unit assembly connector.

    5. Disconnect the I51 certification ECU (smart key ECU assembly) connector.

    6. Disconnect the A1 stop light switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A1-2 (L) or A36-35 (STP) - Body ground Always 10 kΩ or higher

    8. Connect the A1 stop light switch assembly connector.

    9. Connect the I51 certification ECU (smart key ECU assembly) connector.

    10. Connect the I22 shift lock control unit assembly connector.

    11. Connect the A35 ECM connector.

    12. Connect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    NG

    CHECK WIRE HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - STOP LIGHT CONTROL ECU ASSEMBLY) Click here

    OK

  11. INSPECT STOP LIGHT SWITCH ASSEMBLY


    1. Inspect the stop light switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    NG

    REPLACE STOP LIGHT SWITCH ASSEMBLY Click here

  12. CHECK WIRE HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - STOP LIGHT CONTROL ECU ASSEMBLY)


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the A35 ECM connector.

    4. Disconnect the I22 shift lock control unit assembly connector.

    5. Disconnect the I51 certification ECU (smart key ECU assembly) connector.

    6. Disconnect the A1 stop light switch assembly connector.

    7. Disconnect the A3 stop light control ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A3-5 (STP) or A36-35 (STP) - Body ground Always 10 kΩ or higher

    9. Connect the A3 stop light control ECU assembly connector.

    10. Connect the A1 stop light switch assembly connector.

    11. Connect the I51 certification ECU (smart key ECU assembly) connector.

    12. Connect the I22 shift lock control unit assembly connector.

    13. Connect the A35 ECM connector.

    14. Connect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  13. INSPECT STOP LIGHT CONTROL ECU ASSEMBLY


    1. Inspect the stop light control ECU assembly.

      for LHD: Click here

      for RHD: Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    NG

    REPLACE STOP LIGHT CONTROL ECU ASSEMBLY for LHD: Click here
    REPLACE STOP LIGHT CONTROL ECU ASSEMBLY for RHD: Click here

  14. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - STOP LIGHT CONTROL ECU ASSEMBLY)


    1. Turn the engine switch off.

    2. Disconnect the A3 stop light control ECU assembly.

    3. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A36-26 (STPO) - A3-9 (ACC) Always Below 1 Ω

    5. Connect the A36 skid control ECU (brake actuator assembly) connector.

    6. Connect the A3 stop light control ECU assembly.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  15. CHECK STOP LIGHT CONTROL ECU ASSEMBLY


    1. Turn the engine switch off.

    2. B008INKC29
      *a

      Front view of wire harness connector

      (to Stop Light Control ECU Assembly)

      Disconnect the stop light control ECU assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A3-6 (+B) - Body ground Always 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A3-8 (GND) - Body ground Always Below 1 Ω

    5. Connect the stop light control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE STOP LIGHT CONTROL ECU ASSEMBLY for LHD: Click here
    REPLACE STOP LIGHT CONTROL ECU ASSEMBLY for RHD: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  16. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - STOP LIGHT CONTROL ECU ASSEMBLY)


    1. Turn the engine switch off.

    2. Disconnect the A3 stop light control ECU assembly.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A36-35 (STP) - A3-5 (STP) Always Below 1 Ω

    5. Connect the skid control ECU (brake actuator assembly) connector.

    6. Connect the A3 stop light control ECU assembly.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  17. INSPECT TERMINAL VOLTAGE (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) CONNECTOR)


    1. Turn the engine switch off.

    2. B008H9EC20
      *a

      Front view of wire harness connector

      (to Skid control ECU (Brake actuator assembly))

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

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A36-5 (STP2) - Body ground Brake pedal released Below 1.5 V

    4. Connect the skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - STOP LIGHT CONTROL ECU ASSEMBLY) Click here

    OK

  18. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - REAR COMBINATION LIGHT ASSEMBLY LH)


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the Q16 rear combination light assembly LH connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A36-5 (STP2) or Q16-2 (STP) - Body ground Brake pedal depressed 8 to 14 V

    5. Connect the Q16 rear combination light assembly LH connector.

    6. Connect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR COMBINATION LIGHT ASSEMBLY LH Click here

    NG

  19. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - REAR COMBINATION LIGHT ASSEMBLY RH)


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the Q16 rear combination light assembly LH connector.

    4. Disconnect the P13 rear combination light assembly RH connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A36-5 (STP2) or P13-2 (STP) - Body ground Brake pedal depressed 8 to 14 V

    6. Connect the P13 rear combination light assembly RH connector.

    7. Connect the Q16 rear combination light assembly LH connector.

    8. Connect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR COMBINATION LIGHT ASSEMBLY RH Click here

    NG

  20. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - REAR LIGHT ASSEMBLY LH)


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the Q16 rear combination light assembly LH connector.

    4. Disconnect the P13 rear combination light assembly RH connector.

    5. Disconnect the Y11 rear light assembly LH connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A36-5 (STP2) or Y11-3 (B) - Body ground Brake pedal depressed 8 to 14 V

    7. Connect the Y11 rear light assembly LH connector.

    8. Connect the P13 rear combination light assembly RH connector.

    9. Connect the Q16 rear combination light assembly LH connector.

    10. Connect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR LIGHT ASSEMBLY LH Click here

    NG

  21. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - REAR LIGHT ASSEMBLY RH)


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the Q16 rear combination light assembly LH connector.

    4. Disconnect the P13 rear combination light assembly RH connector.

    5. Disconnect the Y11 rear light assembly LH connector.

    6. Disconnect the Y10 rear light assembly RH connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A36-5 (STP2) or Y10-3 (B) - Body ground Brake pedal depressed 8 to 14 V

    8. Connect the Y10 rear light assembly RH connector.

    9. Connect the Y11 rear light assembly LH connector.

    10. Connect the P13 rear combination light assembly RH connector.

    11. Connect the Q16 rear combination light assembly LH connector.

    12. Connect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR LIGHT ASSEMBLY RH Click here

    NG

  22. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - CENTER STOP LIGHT ASSEMBLY)


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the Q16 rear combination light assembly LH connector.

    4. Disconnect the P13 rear combination light assembly RH connector.

    5. Disconnect the Y11 rear light assembly LH connector.

    6. Disconnect the Y10 rear light assembly RH connector.

    7. Disconnect the e1 center stop light assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A36-5 (STP2) or e1-2 (B2) - Body ground Brake pedal depressed 8 to 14 V

    9. Connect the e1 center stop light assembly connector.

    10. Connect the Y10 rear light assembly RH connector.

    11. Connect the Y11 rear light assembly LH connector.

    12. Connect the P13 rear combination light assembly RH connector.

    13. Connect the Q16 rear combination light assembly LH connector.

    14. Connect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CENTER STOP LIGHT ASSEMBLY Click here

    NG

  23. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - STOP LIGHT CONTROL ECU ASSEMBLY)


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the Q16 rear combination light assembly LH connector.

    4. Disconnect the P13 rear combination light assembly RH connector.

    5. Disconnect the Y11 rear light assembly LH connector.

    6. Disconnect the Y10 rear light assembly RH connector.

    7. Disconnect the e1 center stop light assembly connector.

    8. Disconnect the A3 stop light control ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A3-1 (OUT) - A36-5 (STP2) Always Below 1 Ω
      A3-1 (OUT) or A36-5 (STP2) - Body ground Always 10 kΩ or higher

    10. Connect the A3 stop light control ECU assembly connector.

    11. Connect the e1 center stop light assembly connector.

    12. Connect the Y10 rear light assembly RH connector.

    13. Connect the Y11 rear light assembly LH connector.

    14. Connect the P13 rear combination light assembly RH connector.

    15. Connect the Q16 rear combination light assembly LH connector.

    16. Connect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE STOP LIGHT CONTROL ECU ASSEMBLY for LHD: Click here
    REPLACE STOP LIGHT CONTROL ECU ASSEMBLY for RHD: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  24. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - STOP LIGHT CONTROL ECU ASSEMBLY)


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the A3 stop light control ECU assembly.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A36-5 (STP2) or A3-1 (OUT) - Body ground Brake pedal released Below 1.5 V

    5. Connect the A3 stop light control ECU assembly.

    6. Connect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE STOP LIGHT CONTROL ECU ASSEMBLY for LHD: Click here
    REPLACE STOP LIGHT CONTROL ECU ASSEMBLY for RHD: Click here

    NG

  25. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - REAR COMBINATION LIGHT ASSEMBLY LH)


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the A3 stop light control ECU assembly.

    4. Disconnect the Q16 rear combination light assembly LH connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A36-5 (STP2) or Q16-2 (STP) - Body ground Brake pedal released Below 1.5 V

    6. Connect the Q16 rear combination light assembly LH connector.

    7. Connect the A3 stop light control ECU assembly.

    8. Connect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR COMBINATION LIGHT ASSEMBLY LH Click here

    NG

  26. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - REAR COMBINATION LIGHT ASSEMBLY RH)


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the A3 stop light control ECU assembly.

    4. Disconnect the Q16 rear combination light assembly LH connector.

    5. Disconnect the P13 rear combination light assembly RH connector.

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

      Standard Voltage
      Tester Connection Tester Connection Specified Condition
      A36-5 (STP2) or P13-2 (STP) - Body ground Brake pedal released Below 1.5 V

    7. Connect the P13 rear combination light assembly RH connector.

    8. Connect the Q16 rear combination light assembly LH connector.

    9. Connect the A3 stop light control ECU assembly.

    10. Connect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR COMBINATION LIGHT ASSEMBLY RH Click here

    NG

  27. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - REAR LIGHT ASSEMBLY LH)


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the A3 stop light control ECU assembly.

    4. Disconnect the Q16 rear combination light assembly LH connector.

    5. Disconnect the P13 rear combination light assembly RH connector.

    6. Disconnect the Y11 rear light assembly LH connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A36-5 (STP2) or Y11-3 (B) - Body ground Brake pedal released Below 1.5 V

    8. Connect the Y11 rear light assembly LH connector.

    9. Connect the P13 rear combination light assembly RH connector.

    10. Connect the Q16 rear combination light assembly LH connector.

    11. Connect the A3 stop light control ECU assembly.

    12. Connect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR LIGHT ASSEMBLY LH Click here

    NG

  28. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - REAR LIGHT ASSEMBLY RH)


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the A3 stop light control ECU assembly.

    4. Disconnect the Q16 rear combination light assembly LH connector.

    5. Disconnect the P13 rear combination light assembly RH connector.

    6. Disconnect the Y11 rear light assembly LH connector.

    7. Disconnect the Y10 rear light assembly RH connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A36-5 (STP2) or Y10-3 (B) - Body ground Brake pedal released Below 1.5 V

    9. Connect the Y10 rear light assembly RH connector.

    10. Connect the Y11 rear light assembly LH connector.

    11. Connect the P13 rear combination light assembly RH connector.

    12. Connect the Q16 rear combination light assembly LH connector.

    13. Connect the A3 stop light control ECU assembly.

    14. Connect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR LIGHT ASSEMBLY RH Click here

    NG

  29. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - CENTER STOP LIGHT ASSEMBLY)


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the A3 stop light control ECU assembly.

    4. Disconnect the Q16 rear combination light assembly LH connector.

    5. Disconnect the P13 rear combination light assembly RH connector.

    6. Disconnect the Y11 rear light assembly LH connector.

    7. Disconnect the Y10 rear light assembly RH connector.

    8. Disconnect the e1 center stop light assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A36-5 (STP2) or e1-2 (B2) - Body ground Brake pedal released Below 1.5 V

    10. Connect the e1 center stop light assembly connector.

    11. Connect the Y10 rear light assembly RH connector.

    12. Connect the Y11 rear light assembly LH connector.

    13. Connect the P13 rear combination light assembly RH connector.

    14. Connect the Q16 rear combination light assembly LH connector.

    15. Connect the A3 stop light control ECU assembly.

    16. Connect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CENTER STOP LIGHT ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  30. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - STOP LIGHT CONTROL ECU ASSEMBLY)


    1. Turn the engine switch off.

    2. Disconnect the A36 skid control ECU (brake actuator assembly) connector.

    3. Disconnect the A3 stop light control ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A36-26 (STPO) or A3-9 (ACC) - Body ground Always 10 kΩ or higher

    5. Connect the A3 stop light control ECU assembly connector.

    6. Connect the A36 skid control ECU (brake actuator assembly) connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE STOP LIGHT CONTROL ECU ASSEMBLY for LHD: Click here
    REPLACE STOP LIGHT CONTROL ECU ASSEMBLY for RHD: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR