AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:P2759

DTC Code DTC Name
P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU)

DESCRIPTION

The TCM controls the lock-up solenoid using a predetermined duty ratio*, and performs lock-up and flex lock-up control.

Tech Tips

*: The duty ratio is the ratio of the current ON time (A) to the total of the current ON and OFF time (A + B).

Duty Ratio (%) = A / (A + B) x 100

B002DLZE01
DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU) Open or short is detected in shift solenoid valve SLU circuit for 1 second or more while driving (1 trip detection logic).

  • Shift solenoid valve SLU

  • Transmission wire

  • Harness and connector

  • TCM

 Comes on DTC stored

MONITOR DESCRIPTION

When an open or short in a shift solenoid valve SLU circuit is detected, the TCM determines that there is a malfunction. The TCM will illuminate the MIL and store this DTC.

WIRING DIAGRAM

B002D6VE80
*a Shift Solenoid Valve SLU
*b Transmission Wire

CAUTION / NOTICE / HINT

Note

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

Click here

Tech Tips

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. Check for DTCs again.

    Click here

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLU) - TCM)


    1. B002DMRC53
      *a

      Rear view of wire harness connector

      (to TCM)

      Disconnect the E5 TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E5-2 (SLU+) - E5-8 (SLU-) 20°C (68°F) 5.0 to 5.6 Ω
      E5-2 (SLU+) or E5-8 (SLU-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM) Click here

    OK

  2. REPLACE TCM


    1. Replace the TCM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    PERFORM A/T CODE REGISTRATION Click here

  3. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM)


    1. Disconnect the E24 transmission wire connector.

    2. Disconnect the E5 TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E24-13 (SLU+) - E5-2 (SLU+) Always Below 1 Ω
      E24-14 (SLU-) - E5-8 (SLU-) Always Below 1 Ω
      E24-13 (SLU+) or E5-2 (SLU+) - Body ground Always 10 kΩ or higher
      E24-14 (SLU-) or E5-8 (SLU-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  4. INSPECT SHIFT SOLENOID VALVE SLU


    1. B002E4SC46
      *a

      Component without harness connected

      (Shift Solenoid Valve SLU)

      Remove the shift solenoid valve SLU.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Terminal 1 of the shift solenoid valve SLU - terminal 2 20°C (68°F) 5.0 to 5.6 Ω

    3. Connect a positive (+) lead from the battery with a 21 W bulb to terminal 2 and a negative (-) lead to terminal 1 of the solenoid valve connector. Check that the valve moves and makes an operating sound.

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

    OK

    REPAIR OR REPLACE TRANSMISSION WIRE Click here

    NG

    REPLACE SHIFT SOLENOID VALVE SLU Click here