ELECTRIC PARKING BRAKE SYSTEM Electric Parking Brake System AUTO Function Circuit

DESCRIPTION

for Continuously Variable Transaxle:

The skid control ECU (brake actuator assembly) receives shift position information from the ECM via CAN communication.

In addition, front seat inner belt information and driver seat door courtesy switch information is received from the main body ECU (multiplex network body ECU).

The electric parking brake system AUTO function (shift-linked function) automatically releases the parking brake when the following conditions are met: 1) Ignition switch to ON, 2) brake pedal is depressed, and 3) shift lever is moved out of P. When the shift lever is moved to P with these conditions met, the function automatically locks the parking brake.

The electric parking brake system AUTO (shift-linked function) automatically engages the parking brake when the shift lever is moved to P and disengages the parking brake when the shift lever is moved out of P when the ignition switch to ON and the brake pedal is depressed.

for Manual Transaxle:

The skid control ECU (brake actuator assembly) receives clutch stroke information from the ECM and neutral position information from the engine stop and start ECU (w/ Stop and Start System) via CAN communication.

In addition, front seat inner belt information and driver seat door courtesy switch information is received from the main body ECU (multiplex network body ECU).

The AUTO function (ignition switch-linked function) of the electric parking brake system automatically locks when the ignition switch is turned off.

WIRING DIAGRAM

B008MBXE01

CAUTION / NOTICE / HINT

Note


  • 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 blinks (red) 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.

    4. Turn the GTS on.

    5. Enter the following menus: Chassis / ABS/VSC/TRAC/EPB / Data List.

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


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

      OFF: Manual mode

      ON: AUTO mode

      		 -

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

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

      Result
      Result Proceed to
      The Data List display does not turn on and off according to mode switching A
      The Data List display turns on and off according to mode switching (for CVT) B
      The Data List display turns on and off according to mode switching (for Manual Transaxle with Stop and Start System) C
      The Data List display turns on and off according to mode switching (for Manual Transaxle without Stop and Start System) D

    B

    GO TO STEP 5 Click here

    C

    GO TO STEP 7 Click here

    D

    GO TO STEP 10 Click here

    A

  3. 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

  4. 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
      Result Proceed to
      OK (for CVT) A
      OK (for Manual Transaxle) B
      NG C

    B

    READ VALUE USING GTS (NEUTRAL SWITCH) Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

  5. READ VALUE USING GTS (SHIFT POSITION)


    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 / ABS/VSC/TRC/EPB / Data List.

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


      Chassis > ABS/VSC/TRC/EPB > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Shift Position Shift lever position information "P,N", R, D/M, 1st-6th/B or Fail Actual shift lever position for Continuously Variable Transaxle
      OK
      On the GTS screen, ON or OFF is displayed accordingly.

      Chassis > ABS/VSC/TRC/EPB > Data List
      Tester Display
      Shift Lever Position
      Result
      Result Proceed to
      OK A
      NG (for K114) B
      NG (for K313) C
      NG (for K313F) D

    B

    GO TO CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM Click here

    C

    GO TO CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM Click here

    D

    GO TO CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM Click here

    A

  6. READ VALUE USING GTS (STOP LIGHT SW)


    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 / ABS/VSC/TRC/EPB / Data List.

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


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

      ON: Brake pedal depressed

      OFF: Brake pedal released

      		 -

      Chassis > ABS/VSC/TRC/EPB > Data List
      Tester Display
      Stop Light SW
      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Proceed to
      OK
      NG

    OK

    GO TO STEP 10 Click here

    NG

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

  7. READ VALUE USING GTS (NEUTRAL SWITCH)


    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: Powertrain / Stop and Start / Data List.

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


      Powertrain > Stop and Start > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Neutral Switch Neutral start switch assembly signal ON / OFF

      ON: Shift lever in neutral

      OFF: Shift lever not in neutral

      		 -

      Powertrain > Stop and Start > Data List
      Tester Display
      Neutral Switch
      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO STOP AND START SYSTEM Click here

    OK

  8. READ VALUE USING GTS (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE AND NO. 2 VOLTAGE)

    B008LA3C06
    *a Fully Depressed
    *b Fully Released

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / All Data / Accelerator Position Sensor No.1 Voltage and Accelerator Position Sensor No.2 Voltage.


      Powertrain > Engine > Data List
      Tester Display
      Accelerator Position Sensor No.1 Voltage
      Accelerator Position Sensor No.2 Voltage

    5. Read the values displayed on the GTS.

      Standard Voltage
      Accelerator Pedal Operation Accelerator Position Sensor No.1 Voltage Accelerator Position Sensor No.2 Voltage
      Fully Released 0.5 to 1.1 V 1.2 to 2.0 V
      Fully Depressed 2.6 to 4.5 V 3.4 to 4.75 V
      Result
      Proceed to
      OK
      NG

    NG

    GO TO SFI SYSTEM Click here

    OK

  9. READ VALUE USING GTS (CLUTCH STROKE SENSOR VOLTAGE)


    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: Powertrain / Transmission / Data List.

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


      Powertrain > Transmission > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Clutch Stroke Sensor Voltage Clutch stroke sensor output voltage

      Min.: 0.000 V

      Max.: 4.999 V

      		 Value increases: Clutch pedal released → clutch pedal fully depressed -

      Powertrain > Engine > Data List
      Tester Display
      Clutch Stroke Sensor Voltage
      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO MANUAL TRANSAXLE SYSTEM Click here

    OK

  10. READ VALUE USING GTS (DOOR COURTESY SW)


    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: Body Electrical > Main Body > Data List

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


      Body Electrical > Main Body > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      FR Door Courtesy SW Front door courtesy light switch assembly RH (for RHD) ON or OFF

      ON: Front door RH open

      OFF: Front door RH closed

      		 If this item does not change according to the actual state of the driver door, there is a malfunction in the door courtesy light switch or related part.
      FL Door Courtesy SW Front door courtesy light switch assembly LH (for LHD) ON or OFF

      ON: Front door LH open

      OFF: Front door LH closed

      		 If this item does not change according to the actual state of the driver door, there is a malfunction in the door courtesy light switch or related part.

      Body Electrical > Main Body > Data List
      Tester Display
      FR Door Courtesy SW
      FL Door Courtesy SW
      OK
      The Data List item changes in accordance with the opening and closing of the driver door.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO LIGHTING SYSTEM Click here

    OK

  11. READ VALUE USING GTS (D SEAT BUCKLE SW)


    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: Body Electrical > Main Body > Data List

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


      Body Electrical > Main Body > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      D Seat Buckle SW Driver seat belt buckle switch OFF or ON

      ON: Driver seat belt unfastened

      OFF: Driver seat belt fastened

      		 -

      Body Electrical > Main Body > Data List
      Tester Display
      D Seat Buckle SW
      OK
      Unset or Set is displayed on the GTS according to the driver seat belt condition.
      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 SEAT BELT WARNING SYSTEM Click here