ELECTRIC PARKING BRAKE SYSTEM Electric Parking Brake AUTO Indicator Light Circuit

DESCRIPTION

Pulling the electric parking brake switch to the lock side for 5 seconds or more changes the AUTO function (shift-linked function) to ON, and an AUTO Mode ON message is displayed on the multi-information display in the combination meter. (for CVT)

Pressing the electric parking brake switch to the release side for 5 seconds or more changes the AUTO function (shift-linked function) to OFF, and an AUTO Mode OFF message is displayed on the multi-information display in the combination meter.(for CVT)

Pulling the electric parking brake switch to the lock side for 5 seconds or more changes the AUTO function (ignition switch-linked function) to ON, and the EPB-Auto OFF indicator light in the combination meter turns off. (for Manual Transaxle)

Pressing the electric parking brake switch to the release side for 5 seconds or more changes the AUTO function (ignition switch-linked function) to OFF, and the EPB-Auto OFF indicator light in the combination meter illuminates. (for Manual Transaxle)

WIRING DIAGRAM

B008MBXE01

CAUTION / NOTICE / HINT

Note


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

  • The electric parking brake may still operate up to 20 seconds after the ignition switch is turned off. Before disconnecting connectors or fuses, turn the ignition switch off and wait 20 seconds or more.

  • When replacing the skid control ECU (brake actuator assembly), operate the electric parking brake switch (electric parking brake switch assembly), as the parking brake indicator light (red) blinks when the ignition switch is first turned to ON.

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication system DTCs are output.

      Click here

      Result
      Result Proceed to
      DTCs are not output A
      DTCs are output B

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. READ VALUE USING GTS (AUTO MODE)


    1. Turn the ignition switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON and the GTS on.

    4. Enter the following menus: Chassis / Electric Parking Brake / Data List.

    5. Check the values by referring to the table below.


      Chassis > ABS/VSC/TRC/EPB > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Auto Mode AUTO mode permission display OFF or ON

      OFF: Manual mode

      ON: AUTO mode

      		 -

      Chassis > ABS/VSC/TRC/EPB > Data List
      Tester Display
      Auto Mode

    6. When switching the mode, check that the Data List display turns on and off.

      Result
      Result Proceed to
      AUTO indicator light does not illuminate and turn off according to turning Active Test on and off A
      AUTO indicator light illuminates and turns off according to turning Active Test on and off B

    B

    GO TO STEP 6 Click here

    A

  3. CHECK DTC


    1. Check for DTCs.

      Click here


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

    B

    GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

    A

  4. INSPECT ELECTRIC PARKING BRAKE SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY)


    1. Inspect the electric parking brake switch (electric parking brake switch assembly).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE ELECTRIC PARKING BRAKE SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY) Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - ELECTRIC PARKING BRAKE SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY))


    1. Disconnect the F67 electric parking brake switch (electric parking brake switch assembly) connector.

    2. Disconnect the A42 skid control ECU (brake actuator assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A42-31 (SWI1) - F67-6 (SWI1) Always Below 5 Ω
      A42-32 (SWO1) - F67-5 (SWO1) Always Below 5 Ω
      A42-15 (SWI2) - F67-4 (SWI2) Always Below 5 Ω
      A42-16 (SWO2) - F67-3 (SWO2) Always Below 5 Ω
      A42-31 (SWI1) or F67-6 (SWI1) - Body ground Always 10 kΩ or higher
      A42-32 (SWO1) or F67-5 (SWO1) - Body ground Always 10 kΩ or higher
      A42-15 (SWI2) or F67-4 (SWI2) - Body ground Always 10 kΩ or higher
      A42-16 (SWO2) or F67-3 (SWO2) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. PERFORM ACTIVE TEST USING GTS (AUTO MODE)


    1. Turn the ignition switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the ignition switch to ON.

    4. Turn the GTS on.

    5. Enter the following menus: Chassis / Electric Parking Brake / Data List.

    6. Read the Data List according to the display on the GTS.

      Click here


      Chassis > ABS/VSC/TRC/EPB > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Auto Mode AUTO mode ON or OFF

      • Vehicle stopped

      • Ignition switch ON

      Chassis > ABS/VSC/TRC/EPB > Active Test
      Tester Display
      Auto Mode

    7. Select the Data List on the GTS.


      Chassis > ABS/VSC/TRC/EPB > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Auto Mode AUTO mode permission display ON or OFF

      ON: AUTO mode

      OFF: Manual mode

      		 -

      Chassis > ABS/VSC/TRC/EPB > Data List
      Tester Display
      Auto Mode

    8. Perform the Auto Mode Active Test, and check that the Data List display changes.

      Result
      Result Proceed to
      Check the operating condition of the "Auto Mode" when operating it using the GTS. (for LHD) A
      Check the operating condition of the "Auto Mode" when operating it using the GTS. (for RHD) B
      "Auto Mode" in the Data List turns ON/OFF using the Active Test. C

    A

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) Click here

    B

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) Click here

    C

  7. INSPECT COMBINATION METER ASSEMBLY


    1. Perform the Active Test of the combination meter assembly using the GTS. (for CVT)

      Click here


      Body Electrical > Combination Meter > Active Test
      Tester Display
      Meter Display 1

    2. Perform the Active Test of the combination meter assembly using the GTS. (for Manual Transaxle)

      Click here


      Body Electrical > Combination Meter > Active Test
      Tester Display
      EPB Auto OFF Indicator

    3. Check the multi-information display the combination meter assembly turn ON or OFF in accordance with the GTS operation. (for CVT)

      OK
      The message in the multi-information display appears and disappears in accordance with the Active Test operation.

    4. Check that the Auto off indicator light on the combination meter assembly turns ON or OFF in accordance with the GTS operation. (for Manual Transaxle)

      OK
      The indicator light turns on and off in accordance with the Active Test operation.
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) Click here

    B

    REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) Click here

    C

    GO TO METER / GAUGE SYSTEM Click here