ECD SYSTEM(w/ Glow Plug Controller), 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.

(2 trip detection logic)

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

  • No. 2 clutch pedal switch assembly

  • ECM

Comes on

DTC stored
Table 1. DTC Detection Drive Pattern

DTC No.

DTC Detection Drive Pattern

P0704

Gears are shifted more than 10 times

WIRING DIAGRAM

A293505E03

CAUTION / NOTICE / HINT

Note:

  • When replacing the ECM, perform ECM Initialization and Registration.

    Click here

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

Tip:

  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing a new ECM, perform all of the initialization and registration procedures 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 PEDAL SWITCH ASSEMBLY

    1. Check installation of the No. 2 clutch pedal switch assembly.

      Click here

      OK

      No. 2 clutch pedal switch assembly is installed correctly.

    Result

    Proceed to

    OK

    NG
    NG

    SECURELY REINSTALL NO. 2 CLUTCH PEDAL SWITCH ASSEMBLYClick here

    OK

  2. INSPECT NO. 2 CLUTCH PEDAL SWITCH ASSEMBLY

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

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE NO. 2 CLUTCH PEDAL SWITCH ASSEMBLYClick here

    OK

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

    1. Disconnect the No. 2 clutch pedal 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 (CL-) - A169-36 (D)

      Always

      Below 1 Ω

      A4-2 (CL-) or A169-36 (D) - Body ground and other terminals

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTORClick here

    OK

  4. CHECK TERMINAL VOLTAGE (POWER SOURCE OF NO. 2 CLUTCH PEDAL SWITCH ASSEMBLY)

    A257647C04

    *a

    Front view of wire harness connector

    (to No. 2 Clutch Pedal Switch Assembly)

    1. Disconnect the No. 2 clutch pedal 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

      Condition

      Specified Condition

      A4-1 (CL+) - Body ground

      Ignition switch ON

      11 to 14 V

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI-MAIN RELAY - NO. 2 CLUTCH PEDAL SWITCH ASSEMBLY)Click here

    OK

  5. REPLACE ECM

    1. Replace the ECM.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  6. REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI-MAIN RELAY - NO. 2 CLUTCH PEDAL SWITCH ASSEMBLY)

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  7. REPAIR OR REPLACE HARNESS OR CONNECTOR

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  8. REPLACE NO. 2 CLUTCH PEDAL SWITCH ASSEMBLY

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

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  9. SECURELY REINSTALL NO. 2 CLUTCH PEDAL SWITCH ASSEMBLY

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

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  10. 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. Start the engine.

    5. Change the shift more than 10 times during city driving.

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

    7. Confirm that the pending DTC is not output again.

      Powertrain > Engine and ECT > Trouble Codes

    Result

    Proceed to

    NEXT
    NEXT

    END