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

A01609NE01
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 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

A01634PE08

INSPECTION PROCEDURE

PROCEDURE


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


    1. A015ZRFE21

      Disconnect the TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E59-2 (SLU+) - E59-8 (SLU-) Always 5.0 to 5.6 Ω
      E59-2 (SLU+) or E59-8 (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. A016249E35

      Disconnect the transmission wire connector.

    2. Disconnect the TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E47-13 (SLU+) - E59-2 (SLU+) Always Below 1 Ω
      E47-14 (SLU-) - E59-8 (SLU-) Always Below 1 Ω
      E47-13 (SLU+) or E59-2 (SLU+) - Body ground Always 10 kΩ or higher
      E47-14 (SLU-) or E59-8 (SLU-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT SHIFT SOLENOID VALVE SLU


    1. A0161CGE05

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

      OK
      Valve moves and makes operating sound.

    NG

    REPLACE SHIFT SOLENOID VALVE SLU Click here

    OK

    REPAIR OR REPLACE TRANSMISSION WIRE Click here