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AUTOMATIC TRANSAXLE SYSTEM, Diagnostic DTC:P2759

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DTC Code DTC Name
P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical
*a Spool Valve *b Sleeve *c Solenoid Coil *d Hydraulic Pressure *e Current - -
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DESCRIPTION

The ECM uses signals from the throttle position sensor, air-flow meter, input speed sensor NT, output speed sensor NC and crankshaft position sensor to monitor the engagement condition of the lock-up clutch.

The ECM compares the engagement condition of the lock-up clutch with the lock-up schedule in the ECM memory to detect mechanical malfunctions of the solenoid (SLU) valve, transmission valve body assembly and torque converter clutch.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical While the vehicle is being driven, an open or short is detected in the solenoid (SLU) valve circuit for 1 second (1-trip detection logic).

  • Wiring harness connector

  • Open or short in solenoid (SLU) valve circuit

  • Solenoid (SLU) valve

  • Transmission wire

  • ECM

 Comes on DTC stored
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MONITOR DESCRIPTION

When an open or short in the solenoid (SLU) valve circuit is detected, the ECM determines there is a malfunction, illuminates the MIL and stores a DTC.

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CONFIRMATION DRIVING PATTERN

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

Tip:

After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.


  1. Connect the GTS to the DLC3.

  2. Turn the ignition switch to ON and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the ignition switch off and wait for 2 minutes or more.

  5. Turn the ignition switch to ON and turn the GTS on.

  6. Start the engine.

  7. Perform the Lock-up Function inspection in Road Test.

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  8. Stop the vehicle.

  9. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

  10. Input the DTC: P2759.

  11. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
    Tip:

    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

Perform registration and/or initialization when parts related to the automatic transaxle are replaced.

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PROCEDURE


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    CHECK HARNESS AND CONNECTOR (SOLENOID (SLU) VALVE CIRCUIT)


    1. Disconnect the C58 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C58-13 (SLU+) - C58-12 (SLU-) 20°C (68°F) 5.0 to 5.6 Ω
      C58-13 (SLU+) - Body ground and other terminals Always 10 kΩ or higher
      C58-12 (SLU-) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

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    CHECK HARNESS AND CONNECTOR (ECM - WIRING HARNESS CONNECTOR)


    1. Disconnect the C54 wiring harness connector connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C58-13 (SLU+) - C54-14 (SLU+) Always Below 1 Ω
      C58-12 (SLU-) - C54-5 (SLU-) Always Below 1 Ω
      C58-13 (SLU+) or C54-14 (SLU+) - Body ground and other terminals Always 10 kΩ or higher
      C58-12 (SLU-) or C54-5 (SLU-) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

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    INSPECT TRANSMISSION WIRE (SOLENOID (SLU) VALVE)


    1. B006XMZC06
      *a

      Component without harness connected

      (Transmission Wire)

      Remove the wiring harness connector.

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

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

  4. Click here

    INSPECT SOLENOID (SLU) VALVE


    1. B00713YC02
      *1 Solenoid (SLU) Valve

      Remove the solenoid (SLU) valve.

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

      OK
      Valve moves and makes an operating sound.
      Result
      Proceed to
      OK
      NG