CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM(for 8NR-FTS), Diagnostic DTC:P074011, P074015

DTC Code DTC Name
P074011 Torque Converter Clutch Circuit Short to Ground
P074015 Torque Converter Clutch Circuit Short to Battery or Open

DESCRIPTION

Based on the signal received by the shift solenoid valve SL, the ECM uses the shift solenoid valve SLU to control the lock-up clutch pressure.

If there is an open or short in the shift solenoid valve SL circuit, the ECM stops sending current to the malfunctioning shift solenoid valve.

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. Lock-up is operating.

  2. A short in the shift solenoid valve SL circuit is detected.

  3. Detected 1 time or more consecutively

  4. 1-trip detection logic

  • Wire harness or connector

  • Continuously variable transaxle assembly (Shift solenoid valve SL)

  • ECM

 Comes on DTC stored

SAE Code:

P2769
P074015 Torque Converter Clutch Circuit Short to Battery or Open

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


  1. Lock-up is operating.

  2. An open in the shift solenoid valve SL circuit is detected.

  3. Detected 1 time or more consecutively

  4. 1-trip detection logic

  • Wire harness or connector

  • Continuously variable transaxle assembly (Shift solenoid valve SL)

  • ECM

 Comes on DTC stored

SAE Code:

P2770

MONITOR DESCRIPTION

These DTCs indicate an open or short in the shift solenoid valve SL circuit. If there is an open or short in the shift solenoid valve SL circuit, the ECM detects the malfunction, illuminates the MIL and stores a DTC.

WIRING DIAGRAM

A002ZYTE13
*a Shift Solenoid Valve SL
*b Continuously Variable Transaxle Assembly (Transmission Wire)

CAUTION / NOTICE / HINT

Tech Tips

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


  1. Drive the vehicle and confirm the lock-up on and off conditions according to Road Test.

    Click here

  2. Check for DTCs again.

    Click here

PROCEDURE


  1. INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SL)


    1. A0030OTC09
      *a

      Component without harness connected

      (Transmission Wire)

      Disconnect the B185 transmission wire connector.

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

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

    3. Connect the B185 transmission wire connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY Click here

    OK

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


    1. Disconnect the B208 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B208-75 (SL) - Body ground 20°C (68°F) 11 to 15 Ω

    3. Connect the B208 ECM connector.

      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 INITIALIZATION Click here

  4. REPLACE CONTINUOUSLY VARIABLE TRANSAXLE ASSEMBLY


    1. Replace the continuously variable transaxle assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM INITIALIZATION Click here