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 amount of current flow to the solenoid is controlled by the ECM. During the lock-up operation, if the current increases, the lock-up hydraulic pressure increases.

A01MYHYE02
*1 Lock-up Operation Pressure
*2 Current Flow to Solenoid
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).

  • Open or short in shift solenoid valve SLU circuit

  • Shift solenoid valve SLU

  • ECM

 Comes on DTC stored

MONITOR DESCRIPTION

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

WIRING DIAGRAM

A01MV6EE26
*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

PROCEDURE


  1. INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLU)


    1. A01MVFBC72
      *a

      Component without harness connected

      (Transmission Wire)

      Disconnect the transmission wire connector from the transmission.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      12 (SLU+) - 4 (SLU-) 20°C (68°F) 5.0 to 5.6 Ω

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

      Standard Resistance (Check for short)
      Tester Connection Condition Specified Condition
      12 (SLU+) - Body ground Always 10 kΩ or higher
      4 (SLU-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    INSPECT SHIFT SOLENOID VALVE SLU Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)


    1. A01MVLQC04
      *a

      Rear view of wire harness connector

      (to ECM)

      Connect the transmission wire connector to the transmission.

    2. Disconnect the F3 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F3-3 (SLU+) - F3-2 (SLU-) 20°C (68°F) 5.0 to 5.6 Ω

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

      Standard Resistance (Check for short)
      Tester Connection Condition Specified Condition
      F3-3 (SLU+) - Body ground Always 10 kΩ or higher
      F3-2 (SLU-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. INSPECT SHIFT SOLENOID VALVE SLU


    1. A01MYNLC43
      *a Shift Solenoid Valve SLU

      Remove the 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 the positive (+) lead with a 21 W bulb to terminal 2 and the negative (-) lead to terminal 1 of the solenoid valve connector, then check the movement of the valve.

      OK
      The solenoid makes an operating sound.
      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE TRANSMISSION WIRE Click here

    NG

    REPLACE SHIFT SOLENOID VALVE SLU Click here