Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU) (P2759)

Toyota Tacoma 2015-2018 Service Manual / Ac60e Automatic Transmission / Transaxle / Automatic Transmission System(for 2tr-fe) / Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU) (P2759)

DESCRIPTION

Refer to the system description for DTC P2757 (See page ).

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
  • ECM

MONITOR DESCRIPTION

When an open or short in a shift solenoid valve SLU circuit is detected, the ECM determines there is a malfunction. The ECM will illuminate 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

Immediately

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

All:

The monitor will run whenever the following DTCs are not stored

None

Ignition switch

ON

Starter

OFF

Condition (A):

Battery voltage

12 V or higher

Condition (B):

Battery voltage

10 V or higher, and below 12 V

Target current

Below 0.75 A

Condition (C):

Battery voltage

8 V or higher

Target current

0.25 A or higher

TYPICAL MALFUNCTION THRESHOLDS

One of the following conditions is met: Condition (A), (B) or (C)

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

CAUTION / NOTICE / HINT

NOTICE:

  • Perform the universal trip to clear permanent DTCs (See page Perform registration and/or initialization when parts related to the ).
  • Perform registration and/or initialization when parts related to the automatic transmission are replaced (See page ). ).

HINT:

After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.

  1. Perform the Lock-up Function in Road Test (See page Check for DTCs again (See page  ). ).
  2. Check for DTCs again (See page ).

PROCEDURE

1.

INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLU)

(a) Disconnect the E1 transmission wire connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

21 (SLU+) - 22 (SLU-)

20°C (68°F)

5.0 to 5.6 Ω

21 (SLU+) - Body ground

Always

10 kΩ or higher

22 (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)

(a) Disconnect the ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

E19-2 (SLU+) - E19-1 (SLU-)

20°C (68°F)

5.0 to 5.6 Ω

E19-2 (SLU+) - Body ground

Always

10 kΩ or higher

E19-1 (SLU-) - Body ground

Always

10 kΩ or higher

Text in Illustration

*a

Rear view of wire harness connector

(to ECM)

OK

REPLACE ECM

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.

INSPECT SHIFT SOLENOID VALVE SLU

(a) Remove shift solenoid valve SLU (See page ).

(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

(c) 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 1
  • Battery negative (-) → Terminal 2

Valve moves and makes an operating noise

Text in Illustration

*1

Shift Solenoid Valve SLU

OK

REPLACE TRANSMISSION WIRE

NG

REPLACE SHIFT SOLENOID VALVE SLU

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