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### DTC P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU)

## for Preparation Click here

## 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.
*: 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

## INSPECTION PROCEDURE

1.INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLU)

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)

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

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:

     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