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AUTOMATIC TRANSMISSION SYSTEM(for 1UR-FE), Diagnostic DTC:P2759

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

DTC Code DTC Detection Condition Trouble Area
P2759 An open or short is detected in the shift solenoid valve SLU circuit for 1 sec. or more while driving (1 trip detection logic).

  • Open or short in shift solenoid valve SLU circuit

  • Shift solenoid valve SLU

  • ECM
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MONITOR DESCRIPTION

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

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WIRING DIAGRAM

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PROCEDURE


  1. Click here

    INSPECT NO. 1 TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLU)


    1. A01XAP4E40

      Disconnect the No. 1 transmission wire connector.

    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
      12 (SLU+) - Body ground Always 10 kΩ or higher
      4 (SLU-) - Body ground Always 10 kΩ or higher
      Table 1. Text in Illustration
      *a

      Component without harness connected

      (No. 1 Transmission Wire)

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    CHECK HARNESS AND CONNECTOR (NO. 1 TRANSMISSION WIRE - ECM)


    1. Disconnect the ECM connector.

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

      Standard Resistance
      Table 2. for LHD
      Tester Connection Condition Specified Condition
      C45-10 (SLU+) - C45-11 (SLU-) 20°C (68°F) 5.0 to 5.6 Ω
      C45-10 (SLU+) - Body ground Always 10 kΩ or higher
      C45-11 (SLU-) - Body ground Always 10 kΩ or higher
      Table 3. for RHD
      Tester Connection Condition Specified Condition
      C46-10 (SLU+) - C46-11 (SLU-) 20°C (68°F) 5.0 to 5.6 Ω
      C46-10 (SLU+) - Body ground Always 10 kΩ or higher
      C46-11 (SLU-) - Body ground Always 10 kΩ or higher
      Table 4. Text in Illustration
      *1 for LHD
      *2 for RHD
      *a

      Front view of wire harness connector

      (to ECM)

    • OK

      REPLACE ECM (Click here)

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

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    INSPECT SHIFT SOLENOID VALVE SLU


    1. B00116JE04

      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. 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
      Table 5. Text in Illustration
      *a

      Component without harness connected

      (Shift Solenoid Valve SLU)

    • OK

      REPAIR OR REPLACE NO. 1 TRANSMISSION WIRE (Click here)

    • NG

      REPLACE SHIFT SOLENOID VALVE SLU (Click here)