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.

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.

WIRING DIAGRAM

A001Q7VE01

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 power switch is turned off. Before disconnecting connectors or fuses, turn the power switch off and wait 20 seconds or more.

  • When replacing the parking brake ECU assembly, operate the electric parking brake switch (electric parking brake switch assembly), as the parking brake indicator light (red) blinks when the power switch is first turned on (IG).

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 power switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG) 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 > Electric Parking Brake > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Auto Mode AUTO (shift-linked) mode permission status OFF or ON

      OFF: Manual mode

      ON: AUTO (shift-linked) mode

      		 -

      Chassis > Electric Parking Brake > 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 > Electric Parking Brake > 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 (PARKING BRAKE ECU 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 M71 parking brake ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      M71-20 (LCK1) - F67-6 (LOK1) Always Below 5 Ω
      M71-15 (LCK2) - F67-3 (LOK2) Always Below 5 Ω
      M71-20 (LCK1) or F67-6 (LOK1) - Body ground Always 10 kΩ or higher
      M71-15 (LCK2) or F67-3 (LOK2) - Body ground Always 10 kΩ or higher
      M71-19 (REL1) - F67-5 (RLS1) Always Below 5 Ω
      M71-16 (REL2) - F67-4 (RLS2) Always Below 5 Ω
      M71-19 (REL1) or F67-5 (RLS1) - Body ground Always 10 kΩ or higher
      M71-16 (REL2) or F67-4 (RLS2) - Body ground Always 10 kΩ or higher
      F67-2 (GND1) - Body ground Always Below 5 Ω
      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 power switch on (IG).

    4. Turn the GTS on.

    5. Enter the following menus: Chassis / Electric Parking Brake / Active Test.

    6. Perform the Active Test according to the display on the GTS.

      Click here


      Chassis > Electric Parking Brake > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Auto Mode AUTO (shift-linked) mode ON or OFF

      • Vehicle stopped

      • Ignition switch ON

      Chassis > Electric Parking Brake > Active Test
      Tester Display
      Auto Mode

    7. Select the Data List on the GTS.

      Click here


      Chassis > Electric Parking Brake > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Auto Mode AUTO (shift-linked) mode permission display ON or OFF

      ON: AUTO (shift-linked) mode

      OFF: Manual mode

      		 -

      Chassis > Electric Parking Brake > 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. A
      "Auto Mode" in the Data List turns ON/OFF using the Active Test. B

    A

    REPLACE PARKING BRAKE ECU ASSEMBLY Click here

    B

  7. INSPECT COMBINATION METER ASSEMBLY


    1. Perform the Active Test of the combination meter assembly using the GTS.

      Click here


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

    2. Check the multi-information display the combination meter assembly turn ON or OFF in accordance with the GTS operation.

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

    OK

    REPLACE PARKING BRAKE ECU ASSEMBLY Click here

    NG

    GO TO METER / GAUGE SYSTEM Click here