Toyota Tacoma 2015-2018 Service Manual: Pressure Control Solenoid "D" Circuit Open (P271313)

Toyota Tacoma 2015-2018 Service Manual / Ac60e Automatic Transmission / Transaxle / Automatic Transmission System(for 2gr-fks) / Pressure Control Solenoid "D" Circuit Open (P271313)

DESCRIPTION

Refer to the system description for DTC P27137F (See page ).

DTC No.	DTC Detection Condition	Trouble Area	SAE
P271313	Open or short is detected in shift solenoid valve SLT circuit for 1 second or more while driving (1 trip detection logic).	Open or short in shift solenoid valve SLT circuit Shift solenoid valve SLT ECM	P2716

MONITOR DESCRIPTION

When an open or short in the shift solenoid valve SLT circuit is detected, the ECM interprets this as a fault. The ECM will illuminate the MIL and store the DTC.

MONITOR STRATEGY

Related DTCs	P2716: Shift solenoid valve SLT/Range check
Required sensors/Components	Shift solenoid valve SLT
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
Solenoid current cut status	Not cut
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

Condition (D):

Battery voltage	11 V or higher
Target current	0.2 A or higher

TYPICAL MALFUNCTION THRESHOLDS

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

Condition (A) and (B):

Output duty cycle

More than 100%

Condition (C):

Output duty cycle

Less than 0%

Condition (D):

Solenoid voltage monitor

No signal

COMPONENT OPERATING RANGE

Output duty cycle	More than 3%, and less than 100%
Solenoid voltage monitor	Signal input

CONFIRMATION DRIVING PATTERN

HINT:

After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
When clearing the permanent DTCs, refer to the Clear Permanent DTC procedure (See page ).

Connect the Techstream to the DLC3.
Turn the ignition switch to ON and turn the Techstream on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Turn the ignition switch to ON and turn the Techstream on.
Start the engine.
Wait for 2 seconds or more with the engine running. [*1]
HINT:

[*1] : Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / Transmission / Utility / All Readiness.
Input the DTC: P271313.

Check the DTC judgment result.

Techstream Display	Description
NORMAL	DTC judgment completed System normal
ABNORMAL	DTC judgment completed System abnormal
INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

HINT:

If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.
If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

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

PROCEDURE

1.	INSPECT TRANSMISSION WIRE (SHIFT SOLENOID VALVE SLT)

(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
13 (SLT+) - 14 (SLT-)	20°C (68°F)	5.0 to 5.6 Ω
13 (SLT+) - Body ground	Always	10 kΩ or higher
14 (SLT-) - Body ground	Always	10 kΩ or higher

Text in Illustration

*a	Component without harness connected (Transmission Wire)

GO TO STEP 3

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
E11-13 (SLT+) - E11-12 (SLT-)	20°C (68°F)	5.0 to 5.6 Ω
E11-13 (SLT+) - Body ground	Always	10 kΩ or higher
E11-12 (SLT-) - Body ground	Always	10 kΩ or higher

Text in Illustration

*a	Rear view of wire harness connector (to ECM)

REPLACE ECM

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	INSPECT SHIFT SOLENOID VALVE SLT

(a) Remove shift solenoid valve SLT (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

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 SLT

REPLACE TRANSMISSION WIRE

REPLACE SHIFT SOLENOID VALVE SLT

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