TRANSFER SYSTEM Clutch Switch Circuit

DESCRIPTION

While depressing the clutch pedal, the clutch start switch assembly sends a signal to terminal MTN of the 4 wheel drive control ECU. While the signal is input, switching between H4 and L4 is possible.

WIRING DIAGRAM

A01X6LIE06

PROCEDURE


  1. READ VALUE USING GTS (CLUTCH START SWITCH)


    1. Turn the ignition switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the GTS on.

    4. Turn the ignition switch to ON.

    5. Enter the following menus: Powertrain / Four Wheel Drive / Data List.

    6. According to the display on the GTS, read the Data List.

      Four Wheel Drive
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Clutch SW

      Clutch start switch status

      ON or OFF

      ON: Clutch pedal depressed

      OFF: Clutch pedal released

      Used only for vehicles with a manual transmission.

      Displays OFF for vehicles with an automatic transmission.
      OK
      The display changes according to the clutch pedal operation.

    OK

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

    NG

  2. CHECK ENGINE CONTROL SYSTEM


    1. Check that the engine control system operates normally.

      for 1VD-FTV (w/o DPF): Click here

      for 1GR-FE: See page

      OK
      Engine control system operates normally.
      Result
      Result Proceed to
      OK A
      NG (for 1VD-FTV (w/o DPF)) B
      NG (for 1GR-FE) C

      Click here


    B

    CHECK ENGINE CONTROL SYSTEM Click here

    C

    CHECK ENGINE CONTROL SYSTEM Click here

    A

  3. CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - CLUTCH START SWITCH ASSEMBLY)


    1. Disconnect the A27 4 wheel drive control ECU connector.

    2. for LHD:

      Disconnect the A49 clutch start switch assembly connector.

    3. for RHD:

      Disconnect the e1 clutch start switch assembly connector.

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

      Standard Resistance
      for LHD:
      Tester Connection Condition Specified Condition
      A27-18 (MTN) - A49-1 Always Below 1 Ω
      A27-18 (MTN) or A49-1 - Body ground Always 10 kΩ or higher
      for RHD:
      Tester Connection Condition Specified Condition
      A27-18 (MTN) - e1-1 Always Below 1 Ω
      A27-18 (MTN) or e1-1 - Body ground Always 10 kΩ or higher

    OK

    REPLACE 4 WHEEL DRIVE CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR