MULTI-MODE MANUAL TRANSAXLE SYSTEM Parking Brake Switch Circuit

DESCRIPTION

The TCM detects the ON/OFF status of the parking brake switch. When the parking brake is applied, the parking brake switch turns ON. When the parking brake is released, the switch turns OFF.

Tech Tips

When the brake pedal is not depressed with the gear in 1st, 2nd or reverse, the clutch is half-engaged, even if the accelerator pedal is not depressed. As a result, the vehicle can creep slowly like an automatic transaxle vehicle. This assists the vehicle in preparing to move. The take off assist control is cancelled while the parking brake switch is ON.

WIRING DIAGRAM

A005GSFE03
*a PARKING BRAKE SWITCH ASSEMBLY

PROCEDURE


  1. INSPECT PARKING BRAKE SWITCH ASSEMBLY


    1. A005JH0E02
      Text In Illustration
      *a

      Component without harness connected

      (Parking Brake Switch Assembly)
      *b ON
      *c OFF

      Remove the parking brake switch assembly.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      1 - Switch body

      OFF

      (When shaft pressed)

      		 10 kΩ or higher
      1 - Switch body

      ON

      (When shaft released)

      		 Below 1 Ω

    NG

    REPLACE PARKING BRAKE SWITCH ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (TCM - BODY GROUND)


    1. Disconnect the F68 TCM connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      F68-4 (PKB) - Body ground OFF (Parking brake is released) 10 kΩ or higher
      F68-4 (PKB) - Body ground ON (Parking brake is applied) Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT TCM


    1. Reconnect the F68 TCM connector.

    2. A005M7YE02
      Text In Illustration
      *a

      Component with harness connected

      (TCM)

      Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      F68-4 (PKB) - Body ground OFF (Parking brake is released) 11 to 14 V
      F68-4 (PKB) - Body ground ON (Parking brake is applied) Below 1 V

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

  4. REPLACE TCM


    1. Replace the TCM Click here.


    NEXT

  5. PERFORM INITIALIZATION


    1. Perform the initialization and learning for multi-mode manual transaxle system Click here.


    NEXT

    END