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 booster with master cylinder assembly) operates the stop light switch assembly (stop light relay) to illuminate the stop lights.

If the hybrid vehicle control ECU receives a stop light switch control relay malfunction signal from the skid control ECU (brake booster with master cylinder 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 hybrid vehicle control ECU receives a stop light switch control relay malfunction signal from the skid control ECU (brake booster with master cylinder 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 hybrid vehicle control ECU receives a stop light switch control relay malfunction signal from the skid control ECU (brake booster with master cylinder assembly) for approximately 0.5 seconds or more.

  • Pre-crash safety system

  • Stop light switch assembly

  • Skid control ECU (brake booster with master cylinder assembly)

  • Hybrid vehicle control ECU

  • Harness or connector

WIRING DIAGRAM

B006HIRE10

CAUTION / NOTICE / HINT

Note


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

  • Before replacing the hybrid vehicle control ECU, 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. CHECK FOR DTCs (PRE-CRASH SAFETY SYSTEM)


    1. Check for DTCs.

      Click here


      Body Electrical > Pre-Crash 2 > Trouble Codes

      Tech Tips

      When DTC P057113 is stored by the dynamic radar cruise control system, DTC C1A4B is stored by the pre-crash safety system. Therefore, if DTC P057113 is stored, inspect the pre-crash safety system first.

      Result
      Result Proceed to
      Pre-crash safety system DTCs are not output A
      Pre-crash safety system DTCs are output B

    B

    GO TO PRE-CRASH SAFETY SYSTEM Click here

    A

  2. CHECK STOP LIGHT OPERATION


    1. Check that the stop lights come on when the brake pedal is depressed and go off when the brake pedal is released.

      OK
      The stop lights illuminate when the brake pedal is depressed. The stop lights turn off when the brake pedal is released.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO LIGHTING SYSTEM Click here

    OK

  3. INSPECT STOP LIGHT SWITCH ASSEMBLY


    1. Inspect the stop light switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE STOP LIGHT SWITCH ASSEMBLY Click here

    OK

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


    1. According to the display on the GTS, perform the Active Test Stop Light Relay.

      Click here


      Chassis > ABS/VSC/TRC > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Stop Light Relay Stop lights ON / OFF Test possible at vehicle speed of 0 km/h (0 mph)

      Chassis > ABS/VSC/TRC > Active Test
      Active Test Display
      Stop Light Relay
      Data List Display
      Stop Light Relay Output

    2. According to the display on the GTS, perform the Data List Stop Light Relay.

      Click here


      Chassis > ABS/VSC/TRC > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Stop Light Relay Output STPO terminal output condition ON or OFF

      ON: Output

      OFF: Not output

      		 -

    3. Check that the Data List item Stop Light Relay Output changes between ON and OFF and the stop lights turn on and off according to the operation of the Active Test.

      Result
      Result Proceed to
      The Data List item Stop Light Relay Output changes between ON and OFF and the stop lights operate as normal A
      The Data List item Stop Light Relay Output does not change between ON and OFF or the stop lights do not operate as normal B

    B

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

    A

  5. CHECK FOR DTC (RADAR CRUISE 1)


    1. Clear the DTCs.

      Click here


      Powertrain > Cruise Control > Clear DTCs

    2. Make sure that the DTC detection conditions are met.

      Tech Tips

      If the detection conditions are not met, the system cannot detect the malfunction.


      1. Turn the power switch on (IG).

      2. Turn the dynamic radar cruise control system on using the cruise control main switch (ON/OFF button).

      3. w/ Full-speed range following function: Drive the vehicle at 5 km/h (3 mph) or more for 1 second or more.

        w/o Full-speed range following function: Drive the vehicle at 36 km/h (22 mph) or more for 1 second or more.

    3. 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 HYBRID VEHICLE CONTROL ECU Click here

  6. CHECK HARNESS AND CONNECTOR (STOP LIGHT SWITCH ASSEMBLY - SKID CONTROL ECU)


    1. Disconnect the A38 stop light switch assembly connector.

    2. Disconnect the A32 skid control ECU (brake booster with master cylinder assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A38-1 (OUT) - A32-12 (STP) Always Below 1 Ω
      Standard Resistance
      Tester Connection Condition Specified Condition
      A38-4 (ACC) - A32-22 (STPO) Always Below 1 Ω
      A38-4 (ACC) or A32-22 (STPO) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) for LHD: Click here
    REPLACE SKID CONTROL ECU (BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY) for RHD: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR