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 the current, and performs lock-up and flex lock-up control.

A001E7UE02
DTC Code

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P2759

  1. Engine is running

  2. Solenoid valve SLU circuit is open or shorted

  3. 1 second

  4. 1 trip detection logic

  • Shift solenoid valve SLU

  • Transmission wire

  • Harness and connector

  • TCM

MONITOR DESCRIPTION

When an open or short in the 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

A001EUWE14
*a Shift Solenoid Valve SLU
*b Transmission Wire

PROCEDURE


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


    1. A001AB9E02
      *1 Rear view of wire harness connector: (to TCM)

      Disconnect the E7 TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E7-1 (SLU+) - E7-8 (SLU-) Always 5.0 to 5.6 Ω
      E7-1 (SLU+) or E7-8 (SLU-) - Body ground Always 10 kΩ or higher

    NG

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

    OK

  2. REPLACE TCM


    1. Replace the TCM Click here.


    NEXT

    PERFORM A/T CODE REGISTRATION Click here

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


    1. Disconnect the E50 transmission wire connector.

      A001CF3E07
      *1 Front view of wire harness connector: (to Transmission Wire)
      *2 Rear view of wire harness connector: (to TCM)

    2. Disconnect the E7 TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E50-13 (SLU+) - E7-1 (SLU+) Always Below 1 Ω
      E50-14 (SLU-) - E7-8 (SLU-) Always Below 1 Ω
      E50-13 (SLU+) or E7-1 (SLU+) - Body ground Always 10 kΩ or higher
      E50-14 (SLU-) or E7-8 (SLU-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT SHIFT SOLENOID VALVE SLU


    1. Remove shift solenoid valve SLU Click here.

      A0019VFE01
      *a Component without harness connected: (Shift Solenoid Valve SLU)

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

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

    3. Connect the battery's positive (+) lead with a 21 W bulb to terminal 2 and the negative (-) lead to terminal 1 of the solenoid valve connector. Then check that the valve moves and makes an operating noise.

      OK
      Valve moves and makes operating noise.

    OK

    REPAIR OR REPLACE TRANSMISSION WIRE Click here

    NG

    REPLACE SHIFT SOLENOID VALVE SLU Click here