AUTOMATIC TRANSAXLE SYSTEM, Diagnostic DTC:P074011

DTC Code DTC Name
P074011 Torque Converter Clutch Circuit Short to Ground

DESCRIPTION

Solenoid (SL) valve is turned on and off by signals from the ECM to control the hydraulic pressure acting on the lock-up relay valve, which then controls operation of the lock-up clutch.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P074011 Torque Converter Clutch Circuit Short to Ground

1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other


  1. Solenoid (SL) valve is operated

  2. Solenoid (SL) valve circuit is short to ground

  3. Malfunction status occurs 1 time per trip

  4. 2-trip detection logic

  • Solenoid (SL) valve

  • Transmission wire

  • Harness and connector

  • ECM

 Comes on DTC stored

SAE Code:

P2769

Fail-safe function:

If the ECM detects a malfunction, it turns Solenoid (SL) valve off.

MONITOR DESCRIPTION

Based on the signals from the throttle position sensor, the air flow meter and the crankshaft position sensor, the ECM sends a signal to solenoid (SL) valve to regulate the hydraulic pressure and provide smoother torque converter engagement. Solenoid (SL) valve responds to commands from the ECM. The valve controls the lock-up relay valve to perform the torque-converter lock-up function. If the ECM detects a short to ground in the solenoid (SL) valve circuit, it will illuminate the MIL and store the DTC.

WIRING DIAGRAM

B003ZM0E90
*1 Solenoid (SL) Valve
*2 Transmission Wire

CAUTION / NOTICE / HINT

Note

Perform registration and/or initialization when parts related to the automatic transaxle are replaced.

Click here

Tech Tips

After performing repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Perform the D Position Shift Test inspection in Road Test.

    Click here

  2. Turn the ignition switch off.

  3. Perform step (1) again.

  4. Check for DTCs again.

    Click here

PROCEDURE


  1. INSPECT TRANSMISSION WIRE (SOLENOID (SL) VALVE)


    1. B003ZSLC02
      *a

      Component without harness connected

      (Transmission Wire)

      Disconnect the C62 transmission wire connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      13 (SL) - Body ground 20°C (68°F) 11 to 15 Ω

    3. Connect the C62 transmission wire connector.

      Result
      Proceed to
      OK
      NG

    NG

    INSPECT SOLENOID (SL) VALVE Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)


    1. Disconnect the C1 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C1-62 (SL) - Body ground 20°C (68°F) 11 to 15 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION WIRE - ECM)

    OK

  3. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM REGISTRATION Click here

  4. INSPECT SOLENOID (SL) VALVE


    1. B003ZGVC01
      *1 Solenoid (SL) Valve

      Remove the solenoid (SL) valve.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Solenoid (SL) valve connector terminal - Solenoid (SL) valve body 20°C (68°F) 11 to 15 Ω

    3. Connect a positive (+) lead from the battery to the terminal of the solenoid valve connector, and a negative (-) lead to the solenoid body. Check that the valve moves and makes an operating sound.

      OK
      Valve moves and makes an operating sound.
      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE TRANSMISSION WIRE When Not Using the Engine Support Bridge: Click here
    REPAIR OR REPLACE TRANSMISSION WIRE When Using the Engine Support Bridge: Click here

    NG

    REPLACE SOLENOID (SL) VALVE Click here