AUTOMATIC TRANSAXLE SYSTEM, Diagnostic DTC:P2759

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

DESCRIPTION

The amount of current flow to the solenoid is controlled by the duty ratio* of the TCM output signal. The higher the duty ratio becomes, the higher the lock-up hydraulic pressure becomes during the lock-up operation.

A01CB3GE01

*: Duty Ratio

The duty ratio is the ratio of the electrical current on time (A) to the total of the electrical current on and off time (A + B).

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

DTC No. DTC Detection Condition Trouble Area
P2759 Open or short is detected in shift solenoid valve SLU circuit for 1 second or more while driving (1-trip detection logic).

  • Open or short in shift solenoid valve SLU circuit

  • Shift solenoid valve SLU

  • TCM

MONITOR DESCRIPTION

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

WIRING DIAGRAM

A01CB5NE35

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT TRANSMISSION WIRE (SLU)


    1. A01CE1UE07

      Remove the TCM from the transaxle.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      11 (SLU+) - 5 (SLU-) 20°C (68°F) 5.0 to 5.6 Ω
      11 (SLU+) - Body ground or other terminals Always 10 kΩ or higher
      5 (SLU-) - Body ground or other terminals Always 10 kΩ or higher
      11 (SLU+) - All other terminals except 5 (SLU-) Always 10 kΩ or higher
      5 (SLU-) - All other terminals except 11 (SLU+) Always 10 kΩ or higher
      Result
      Result Proceed to
      OK B
      NG A

    B

    REPLACE TCM Click here

    A

  2. INSPECT SHIFT SOLENOID VALVE SLU


    1. A01CGF5E09

      Remove shift solenoid valve SLU.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 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 an operating sound.

    NG

    REPLACE SHIFT SOLENOID VALVE SLU Click here

    OK

    REPLACE TRANSMISSION WIRE Click here