DTC    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 duty ratio* of the ECM output signal. The higher the duty ratio becomes, the higher the lock-up hydraulic pressure becomes during the lock-up operation.
C110339E02
*: The duty ratio is the ratio of the current ON time (A) to the total of the current ON and OFF times (A + B).
Duty Ratio (%) = A/ (A + B) x 100

DTC No.
DTC Detection Condition
Trouble Area
P2759
Open or short is detected in shift solenoid valve SLU circuit for 1 second or more while driving (1 trip detection logic)
  1. Open or short in shift solenoid valve SLU circuit
  2. Shift solenoid valve SLU
  3. ECM

MONITOR DESCRIPTION

When an open or short in a 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.

WIRING DIAGRAM


A110976E04


INSPECTION PROCEDURE

1.INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLU)


    G020667E29

  1. Disconnect the E1 wire connector.

  1. Measure the resistance of the wire connector.

    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
    		20°C (68°F)
    		10 kΩ or higher
    5 (SLU-) - Body ground
    		20°C (68°F)
    		10 kΩ or higher



NG
Go to step 3
OK


2.CHECK WIRE HARNESS (TRANSMISSION WIRE - ECM)


    G035616E09

  1. Disconnect the E16 ECM connector.

  1. Measure the resistance of the wire harness side connector.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E16-15 (SLU+) - E16-14 (SLU-)
    		20°C (68°F)
    		5.0 to 5.6 Ω
    E16-15 (SLU+) - Body ground
    		20°C (68°F)
    		10 kΩ or higher
    E16-14 (SLU-) - Body ground
    		20°C (68°F)
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK

REPLACE ECM 

3.INSPECT SHIFT SOLENOID VALVE SLU
D025466E07

  1. Remove the shift solenoid valve SLU.

  1. Measure the resistance of the solenoid valve.

    Standard resistance:
    5.0 to 5.6 Ωat 20°C (68°F)



  1. Connect the battery's positive (+) lead to the terminal of the solenoid connector, and the negative (-) lead to the solenoid body.

    OK:
    Solenoid makes operating noise.


    HINT:
    A110977E04
    Reference: Inspect using an oscilloscope.
    Check the waveform of the ECM connector.

    Standard voltage:
    Refer to illustration.
    Item
    		Content
    Tester Connection
    		E16-15 (SLU+) - E16-14 (SLU-)
    Tool Setting
    		5 V/DIV., 1 msec./DIV.
    Condition
    		4th (lock-up) or 5th (lock-up) gear



NG
REPLACE SHIFT SOLENOID VALVE SLU
OK

REPAIR OR REPLACE TRANSMISSION WIRE