ELECTRIC PARKING BRAKE SYSTEM Electric Parking Brake AUTO Switch Light Circuit

WIRING DIAGRAM

A01GLHEE04

INSPECTION PROCEDURE

Note


  • If the electric parking brake ECU or parking brake with bracket actuator assembly is replaced, perform the "Reset Memory" and "ACQUIRE TENSION SENSOR ZERO POINT" procedures Click here.

  • Before disconnecting connectors or fuses, turn the engine switch off and wait 20 seconds or more.

Tech Tips

This flowchart is the inspection method for when the AUTO switch light of the electric parking brake continuously illuminates.

PROCEDURE


  1. CHECK AUTO SWITCH (DATA LIST)


    1. Turn the engine switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the engine switch on (IG) and the tester ON.

    4. Enter the following menus:

      Select: Chassis / Electric Parking Brake / Data List /

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

      Electric Parking Brake
      Tester Display Measurement Item/ Range Switch Condition Normal Condition
      AUTO Switch

      AUTO switch input information display/

      ON or OFF

      Engine switch on (IG)

      AUTO switch is pressed and held

      ON: AUTO switch is pressed and held

      OFF: AUTO switch OFF (released)
      OK
      On tester screen, item changes between ON and OFF according to switch operation.
      Result
      Result Proceed to
      NG A
      OK B

    B

    CHECK HARNESS AND CONNECTOR (ECU - SWITCH) Click here

    A

  2. INSPECT ELECTRIC PARKING BRAKE SWITCH (AUTO SWITCH)


    1. Remove the electric parking brake switch Click here.

    2. A01GNKGE01

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

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      5 (AUTO) - 8 (GND) AUTO switch is pressed and held Below 1 Ω
      AUTO switch OFF (released) 1 MΩ or higher

    NG

    REPLACE ELECTRIC PARKING BRAKE SWITCH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (ECU - SWITCH)


    1. Disconnect the S48 ECU connector.

    2. Disconnect the L39 switch connector.

    3. A01GNN6E04

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

      Standard resistance
      Tester Connection Condition Specified Condition
      S48-5 (AUTO) - L39-5 (AUTO) Always Below 5 Ω
      S48-5 (AUTO) - Body ground Always 100 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (ECU - SWITCH)


    1. Disconnect the S46 ECU connector.

    2. Disconnect the L39 switch connector.

    3. A01GLFTE01

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

      Standard resistance
      Tester Connection Condition Specified Condition
      S46-6 (LPA) - L39-3 (IND-) Always Below 5 Ω
      S46-6 (LPA) - Body ground Always 100 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ELECTRIC PARKING BRAKE ECU Click here