СИСТЕМА ECD, Diagnostic DTC:P0704

DTC Code DTC Name
P0704 Clutch Switch Input Circuit

DESCRIPTION

The clutch switch is mounted on the clutch pedal. The switch is turned off when depressing the clutch pedal, and transmits a signal to the ECM.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0704 Clutch Switch Input Circuit

No clutch switch signals to ECM despite gears being shifted.

(3 trip detection logic)

  • Open or short in No. 2 clutch start switch assembly circuit

  • No. 2 clutch start switch assembly

  • ECM

 Does not come on DTC stored

WIRING DIAGRAM

A01LX2UE02

CAUTION / NOTICE / HINT

Note


  • When replacing the ECM, the ECM needs registration and initialization.

    Click here

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tech Tips


  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing the new ECM, perform all of the initialization/registrations for the "Learning Values Write" function by following the instructions shown on the GTS display.

  • Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK NO. 2 CLUTCH START SWITCH ASSEMBLY


    1. Check the No. 2 clutch start switch assembly installation.

      OK
      No. 2 clutch start switch assembly is installed correctly.
      Result
      Proceed to
      OK
      NG

    NG

    SECURELY REINSTALL NO. 2 CLUTCH START SWITCH ASSEMBLY Click here

    OK

  2. INSPECT NO. 2 CLUTCH START SWITCH ASSEMBLY


    1. Inspect the No. 2 clutch start switch assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE NO. 2 CLUTCH START SWITCH ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (NO. 2 CLUTCH START SWITCH ASSEMBLY - ECM)


    1. Disconnect the No. 2 clutch start switch assembly connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A4-2 - A50-7 (D) Always Below 1 Ω
      A4-2 or A50-7 (D) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (POWER SOURCE)

    A01LYVDC02
    *a

    Front view of wire harness connector

    (to No. 2 Clutch Start Switch Assembly)

    1. Disconnect the No. 2 clutch start switch assembly connector.

    2. 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
      A4-1 - Body ground Ignition switch ON 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (NO. 2 CLUTCH START SWITCH ASSEMBLY - EFI MAIN RELAY) Click here

    OK

  5. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 11 Click here

  6. CHECK HARNESS AND CONNECTOR (NO. 2 CLUTCH START SWITCH ASSEMBLY - EFI MAIN RELAY)


    1. Disconnect the No. 2 clutch start switch assembly connector.

    2. Remove the EFI MAIN relay from the engine room relay block and junction block.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A4-1 - 3 (EFI MAIN relay holder) Always Below 1 Ω
      A4-1 or 3 (EFI MAIN relay holder) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    GO TO STEP 8 Click here

    OK

  7. CHECK ECM POWER SOURCE CIRCUIT


    1. Check the ECM power source circuit.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 11 Click here

  8. REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 11 Click here

  9. REPLACE NO. 2 CLUTCH START SWITCH ASSEMBLY


    1. Replace the No. 2 clutch start switch assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 11 Click here

  10. SECURELY REINSTALL NO. 2 CLUTCH START SWITCH ASSEMBLY


    1. Securely reinstall the No. 2 clutch start switch assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  11. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs.


      Powertrain > Engine and ECT > Clear DTCs

    4. Turn the ignition switch off and wait for 60 seconds or more [A].

    5. Perform road test [B].

    6. Repeat [A] and [B] for the number of trips detected.

    7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.


      Powertrain > Engine and ECT > Trouble Codes

    8. Confirm that the DTC is not output again.

      Result
      Proceed to
      NEXT

    NEXT

    END