AUTOMATIC TRANSMISSION SYSTEM (for 1GR-FE), 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 shift solenoid valve SLU is controlled by the ECM. During the lock-up operation, if the current increases, the lock-up hydraulic pressure increases.

A01DN8LE01
DTC Code DTC Detection Condition Trouble Area
P2759 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

MONITOR DESCRIPTION

When an open or short in the 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

A01DOWVE94

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLU)


    1. A01DP6IE09
      Text in Illustration
      *a

      Component without harness connected

      (Transmission Wire)

      Disconnect the C30 transmission wire connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      13 (SLU+) - 5 (SLU-) 20°C (68°F) 5.0 to 5.6 Ω
      13 (SLU+) - Body ground Always 10 kΩ or higher
      5 (SLU-) - Body ground Always 10 kΩ or higher

    NG

    Click here

    OK

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


    1. A01DPQRE10
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to ECM)

      Disconnect the C35 ECM connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      C35-33 (SLU+) - C35-32 (SLU-) 20°C (68°F) 5.0 to 5.6 Ω
      C35-33 (SLU+) - Body ground Always 10 kΩ or higher
      C35-32 (SLU-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ECM Click here

  3. INSPECT SHIFT SOLENOID VALVE SLU


    1. A01DNLGE05
      Text in Illustration
      *a

      Component without harness connected

      (Shift Solenoid Valve SLU)

      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 operating noise

    NG

    REPLACE SHIFT SOLENOID VALVE SLU Click here

    OK

    REPAIR OR REPLACE TRANSMISSION WIRE Click here