CRUISE CONTROL SYSTEM Clutch Switch Circuit

DESCRIPTION

Clutch switch circuit inspection is necessary for M/T vehicles.

When the clutch pedal is released, the ECM receives positive (+) battery voltage through the ECU IG2 fuse. While depressing the clutch pedal, the clutch switch sends a signal to terminal CLSW of the ECM. The ECM cancels cruise control drive when terminal CLSW receives the signal.

WIRING DIAGRAM

A004H87E01
*a Clutch Switch Assembly
*b from IG2 Relay

CAUTION / NOTICE / HINT

Tech Tips

Clutch switch assembly conditions can be checked using the GTS.


  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 / Clutch Switch Click here.

    Engine
    Clutch Pedal Operation Clutch Switch
    Depressed ON
    Released OFF

PROCEDURE


  1. CHECK ECM (TERMINAL VOLTAGE)


    1. A004IOPE03
      Text in Illustration
      *a

      Component with harness connected

      (ECM)

      Turn the ignition switch to ON.

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

      Standard voltage
      Tester Connection Condition Specified Condition
      A33-15 (CLSW) - Body ground Clutch pedal depressed Below 1 V
      Clutch pedal released 11 to 14 V

    OK

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

    NG

  2. INSPECT CLUTCH SWITCH ASSEMBLY


    1. Inspect the clutch switch assembly (for LHD) Click here.

    2. Inspect the clutch switch assembly (for RHD) Click here.

      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE CLUTCH SWITCH ASSEMBLY Click here

    C

    REPLACE CLUTCH SWITCH ASSEMBLY Click here

    A

  3. CHECK HARNESS AND CONNECTOR (ECM - CLUTCH SWITCH ASSEMBLY)


    1. Disconnect the clutch switch assembly connector.

    2. Disconnect the ECM connector.

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

      Standard resistance (Check for open)
      Tester Connection Condition Specified Condition
      A33-15 (CLSW) - A21-2 Always Below 1 Ω
      Standard resistance (Check for short)
      Tester Connection Condition Specified Condition
      A33-15 (CLSW) or A21-2 - Body ground Always 10 kΩ or higher

    OK

    INSPECT ECM POWER SOURCE CIRCUIT Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - CLUTCH SWITCH ASSEMBLY)