Dtc P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve Slu)

Drivetrain. Yaris. Ncp93, 131
U340E Automatic Transmission Transaxle. Yaris. Ncp93, 131

DESCRIPTION

MONITOR DESCRIPTION

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

COMPONENT OPERATING RANGE

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLU)

CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)

INSPECT SHIFT SOLENOID VALVE SLU

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


DESCRIPTION

Refer to P2757 (YARIS_NCP93 RM000000W8D0BWX_01.html).

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. Wire harness or connector
  2. Transmission wire
  3. Shift solenoid valve SLU
  4. ECM

MONITOR DESCRIPTION

When an open or short in the linear solenoid valve (SLU) circuit is detected, the ECM interprets this as a fault. The ECM turns on the MIL and stores the DTC.

MONITOR STRATEGY


Related DTCs
P2759: Shift solenoid valve SLU/Range check
Required sensors/Components
Shift solenoid valve SLU
Frequency of operation
Continuous
Duration
1.0 second
MIL operation
Immediate
Sequence of operation
None

TYPICAL ENABLING CONDITIONS


The monitor runs whenever the following DTCs are not present.
None
Ignition switch
ON
Starter
OFF

Condition A
Battery voltage
12 V or more

Condition B
Battery voltage
10 V or more and less than 12 V
Target current
Less than 0.75 A

Condition C
Target current
0.25 A or more

TYPICAL MALFUNCTION THRESHOLDS


Condition A and B
Output duty cycle
100% or more

Condition C
Output duty cycle
0% or less

COMPONENT OPERATING RANGE


Output duty cycle
More than 3% and less than 100%

WIRING DIAGRAM


Yaris. Ncp93, 131.U340E Automatic Transmission Transaxle.Automatic Transaxle System (For Sedan). Dtc P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve Slu)


INSPECTION PROCEDURE

NOTICE:
Perform the universal trip to clear permanent DTCs (YARIS_NCP93 RM000000W770OEX.html).
1.INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLU)
Yaris. Ncp93, 131.U340E Automatic Transmission Transaxle.Automatic Transaxle System (For Sedan). Dtc P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve Slu)

  1. Disconnect the transmission wire connector from the transaxle.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    4 (SLU+) - 9 (SLU-)
    		20°C (68°F)
    		5.0 to 5.6 Ω
    4 (SLU+) - Body ground
    		Always
    		10 kΩ or higher
    9 (SLU-) - Body ground
    		Always
    		10 kΩ or higher
    Text in Illustration
    *a
    		Component without harness connected
    (Transmission Wire)


NG
Go to step 3
OK


2.CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)
Yaris. Ncp93, 131.U340E Automatic Transmission Transaxle.Automatic Transaxle System (For Sedan). Dtc P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve Slu)

  1. Connect the transmission wire connector to the transaxle.

  1. Disconnect the ECM connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    C51-48 (SLU+) - C51-47 (SLU-)
    		20°C (68°F)
    		5.0 to 5.6 Ω
    C51-48 (SLU+) - Body ground
    		Always
    		10 kΩ or higher
    C51-47 (SLU-) - Body ground
    		Always
    		10 kΩ or higher
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Transmission Wire)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (YARIS_NCP93 RM000001CN002IX.html)

3.INSPECT SHIFT SOLENOID VALVE SLU
Yaris. Ncp93, 131.U340E Automatic Transmission Transaxle.Automatic Transaxle System (For Sedan). Dtc P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve Slu)

  1. Remove shift solenoid valve SLU.

  1. 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

  1. Connect the positive (+) lead with a 21 W bulb to terminal 2 and the negative (-) lead to terminal 1 of the solenoid valve connector, then check the movement of the valve.

    OK:
    The solenoid makes operating sounds.
    Text in Illustration
    *a
    		Component without harness connected
    (Shift Solenoid Valve SLU)


NG
REPLACE SHIFT SOLENOID VALVE SLU (YARIS_NCP93 RM00000193102FX.html)
OK

REPLACE TRANSMISSION WIRE (YARIS_NCP93 RM00000191I02FX.html)