Toyota Venza: Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU) (P2759)

Toyota Venza Service Manual / U660e Automatic Transmission / Transaxle / Automatic Transaxle System / Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU) (P2759)

DESCRIPTION

The amount of current flow to the solenoid is controlled by the duty ratio of the TCM output signal. The higher the duty ratio becomes, the higher the lock-up hydraulic pressure becomes during the lock-up operation.

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).	Open or short in shift solenoid valve SLU circuit Shift solenoid valve SLU TCM

MONITOR DESCRIPTION

When an open or short in a shift solenoid valve (SLU) circuit is detected, the TCM determines there is a malfunction. The TCM will turn on the MIL and store this 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 sec.
MIL operation	Immediate
Sequence of operation	None

TYPICAL ENABLING CONDITIONS

All

The monitor will run 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)

Battery voltage	8 V or more
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

CAUTION / NOTICE / HINT

NOTICE:

Perform the universal trip to clear permanent DTCs (See page ).

PROCEDURE

1.	INSPECT TRANSMISSION WIRE (SLU)

(a) Remove the TCM from the transaxle.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
11 (SLU+) - 5 (SLU-)	20°C (68°F)	5.0 to 5.6 Ω
11 (SLU+) - Body ground or other terminals	Always	10 kΩ or higher
5 (SLU-) - Body ground or other terminals	Always	10 kΩ or higher
11 (SLU+) - All other terminals except 5 (SLU-)	Always	10 kΩ or higher
5 (SLU-) - All other terminals except 11 (SLU+)	Always	10 kΩ or higher

REPLACE TCM

2.	INSPECT SHIFT SOLENOID VALVE SLU

(a) Remove shift solenoid valve SLU.

(b) 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

Text in Illustration

*1	Shift Solenoid Valve SLU

(c) Connect a battery positive (+) lead with a 21 W bulb to terminal 2 and a negative (-) lead to terminal 1 of the solenoid valve connector. Then check that the valve moves and makes an operating sound.

OK:

Valve moves and makes an operating sound.

REPLACE TRANSMISSION WIRE

REPLACE SHIFT SOLENOID VALVE SLU

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