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

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 P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve Slu). AB60F AUTOMATIC TRANSMISSION / TRANSAXLE. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

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

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.

WIRING DIAGRAM

Dtc P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve Slu). AB60F AUTOMATIC TRANSMISSION / TRANSAXLE. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

INSPECTION PROCEDURE

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

Dtc P2759 Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve Slu). AB60F AUTOMATIC TRANSMISSION / TRANSAXLE. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Disconnect the No. 1 transmission wire connector.

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

Text in Illustration
*a	Component without harness connected (No. 1 Transmission Wire)

NG

Go to step 3

OK

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

Disconnect the ECM connector.

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

Standard Resistance:

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

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

Text in Illustration
*1	for LHD
*2	for RHD
*a	Front view of wire harness connector (to ECM)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

REPLACE ECM ()

3.INSPECT SHIFT SOLENOID VALVE SLU

Remove shift solenoid valve SLU.

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

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

Text in Illustration
*a	Component without harness connected (Shift Solenoid Valve SLU)

NG

REPLACE SHIFT SOLENOID VALVE SLU ()

OK

REPAIR OR REPLACE NO. 1 TRANSMISSION WIRE ()

AB60F AUTOMATIC TRANSMISSION / TRANSAXLE

Land Cruiser URJ200 URJ202 GRJ200 VDJ200

AUTOMATIC TRANSMISSION SYSTEM for 1UR-FE

Measurement Condition	Specified Condition
Battery positive (+) with a 21 W bulb → Terminal 2 Battery negative (-) → Terminal 1	Valve moves and makes an operating noise