СИСТЕМА АВТОМАТИЧЕСКОЙ ТРАНСМИССИИ, Diagnostic DTC:P2759

DTC Code DTC Name
P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical

DESCRIPTION

The TCM controls the lock-up solenoid using a predetermined current, and performs lock-up and flex lock-up control.

DTC No.

DTC Detection Condition


  1. Diagnosis Condition

  2. Malfunction Status

  3. Malfunction Time

  4. Other

 Trouble Area
P2759

  1. Vehicle is being driven

  2. Shift solenoid valve SLU circuit is open or shorted

  3. 2 seconds

  4. 1-trip detection logic

  • Shift solenoid valve SLU

  • Transmission wire

  • Harness or 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

B001YGZE26
*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.

Tech Tips

After performing repair, clear the DTCs and perform the following procedure to check that DTCs are not output.


  1. Perform the Lock-up Function in Road Test Click here.

  2. Check for DTCs again Click here.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (SHIFT SOLENOID VALVE SLU - TCM)


    1. B001Y5AE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to TCM)

      Disconnect the TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A80-7 (SLU+) - A80-6 (SLU-) 20°C (68°F) 5.0 to 5.6 Ω
      A80-7 (SLU+) or A80-6 (SLU-) - Body ground Always 10 kΩ or higher

    OK

    REPLACE TCM Click here

    NG

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


    1. Disconnect the C171 transmission wire connector.

    2. Disconnect the A80 TCM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C171-5 (SLU+) - A80-7 (SLU+) Always Below 1 Ω
      C171-6 (SLU-) - A80-6 (SLU-) Always Below 1 Ω
      C171-5 (SLU+) or A80-7 (SLU+) - Body ground Always 10 kΩ or higher
      C171-6 (SLU-) or A80-6 (SLU-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT SHIFT SOLENOID VALVE SLU


    1. B00201YE13
      Text in Illustration
      *1 Shift Solenoid Valve SLU

      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. Apply 12 V battery voltage to the shift solenoid valve and check that the valve moves and makes an operating noise.

      OK
      Measurement Condition Specified Condition

      • Battery positive (+) with a 21 W bulb → Terminal 2

      • Battery negative (-) → Terminal 1

      		 Valve moves and makes an operating noise

    OK

    REPAIR OR REPLACE TRANSMISSION WIRE Click here

    NG

    REPLACE SHIFT SOLENOID VALVE SLU Click here