Click here

AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:P2769, P2770

Click here
Click here
DTC Code DTC Name
P2769 Short in Torque Converter Clutch Solenoid Circuit (Shift Solenoid Valve SL)
P2770 Open in Torque Converter Clutch Solenoid Circuit (Shift Solenoid Valve SL)
Click here

DESCRIPTION

By turning the shift solenoid valve SL ON or OFF, the TCM controls the fluid pressure to the lock-up relay valve, performing lock-up control.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P2769 Short in Torque Converter Clutch Solenoid Circuit (Shift Solenoid Valve SL)

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. Malfunction status occurs 1 time or more

  4. 2-trip detection logic

  • Shift solenoid valve SL

  • Transmission wire

  • Harness and connector

  • TCM

 Comes on DTC stored
P2770 Open in Torque Converter Clutch Solenoid Circuit (Shift Solenoid Valve SL)

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. Malfunction status occurs 1 time or more

  4. 2-trip detection logic

  • Shift solenoid valve SL

  • Transmission wire

  • Harness and connector

  • TCM

 Comes on DTC stored

Fail-safe function:

If the TCM detects a malfunction, it turns the shift solenoid valve SL OFF.

Click here

MONITOR DESCRIPTION

Based on the signals from the throttle position sensor, the air flow meter and the crankshaft position sensor, the TCM sends a signal to the solenoid valve SL to regulate the hydraulic pressure and provide smooth torque converter assembly engagement. The shift solenoid valve SL responds to commands from the TCM and controls the lock-up relay valve to perform the torque-converter lock-up function. If the TCM detects an open or short circuit in the shift solenoid valve SL circuit, it will illuminate the MIL and store a DTC.

Table 1. *1 Shift Solenoid Valve SL *2 Transmission Wire
Click here

WIRING DIAGRAM

Click here

CAUTION / NOTICE / HINT

Note:

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

Click here

Tip:

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


  1. Perform the Lock-up Function in Road Test.

    Click here

  2. Turn the engine switch off.

  3. Perform step (1) again.

  4. Check for DTCs again.

    Click here

Click here

PROCEDURE


  1. Click here

    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE (SHIFT SOLENOID VALVE SL) - TCM)


    1. B0067R2C41
      *a

      Rear view of wire harness connector

      (to TCM)

      Disconnect the F8 TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F8-24 (SL) - Body ground 20°C (68°F) 11 to 15 Ω
      Result
      Proceed to
      OK
      NG

  2. Click here

    REPLACE TCM


    1. Replace the TCM.

      Click here

      Result
      Proceed to
      NEXT

  3. Click here

    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM)


    1. Disconnect the F25 transmission wire connector.

    2. Disconnect the F8 TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F25-7 (SL) - F8-24 (SL) Always Below 1 Ω
      F25-7 (SL) or F8-24 (SL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

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

  4. Click here

    INSPECT SHIFT SOLENOID VALVE SL


    1. B006571C01
      *a Shift Solenoid Valve SL

      Remove the shift solenoid valve SL.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Terminal of shift solenoid valve SL connector - Shift solenoid valve SL 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