Toyota Venza manuals

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


OK

REPLACE TCM


NG

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.


OK

REPLACE TRANSMISSION WIRE


NG

REPLACE SHIFT SOLENOID VALVE SLU

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