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.

A01GM03E01
DTC No.

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 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

A01GMGTE02

INSPECTION PROCEDURE

PROCEDURE


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


    1. A01GIK2E02

      Disconnect the E7 TCM connector.

    2. Measure the resistance of the wire harness side connector.

      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 AT REGISTRATION Click here

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


    1. A01GMANE05

      Disconnect the E50 transmission wire connector.

    2. Disconnect the E7 TCM connector.

    3. Measure the resistance of the wire harness side connectors.

      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. A01GNU1E05

      Remove the shift solenoid valve SLU Click here.

    2. Measure the resistance of the shift solenoid valve.

      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 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.

    NG

    REPLACE SHIFT SOLENOID VALVE SLU Click here

    OK

    REPAIR OR REPLACE TRANSMISSION WIRE Click here