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Toyota Sienna Service Manual: Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT)

Toyota Sienna Service Manual / U151e automatic transaxle / Automatic transaxle system / Diagnostic trouble code chart / Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT)

SYSTEM DESCRIPTION

The linear solenoid valve (SLT) controls the transmission line pressure for smooth transmission operation based on signals from the throttle position sensor and the vehicle speed sensor. The ECM adjusts the duty ratio (*) of the SLT solenoid valve to control hydraulic line pressure coming from the primary regulator valve. Appropriate line pressure assures smooth shifting with varying engine outputs.

(*): Duty Ratio The duty ratio is the ratio of the period of continuity in one cycle. For example, if A is the period of continuity in one cycle, and B is the period of non-continuity, then Duty Ratio=A/(A+B) x 100(%)

Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT)

MONITOR DESCRIPTION

In any forward position, when the difference between the revolutions of the turbine, Intermediate and output shaft exceeds the specified value (varies with Intermediate, output speed) determined by the ECM, the ECM illuminates the MIL and store the DTC.

When shift solenoid valve SLT remains on, the oil pressure goes down and the clutch engagement force decreases.

NOTICE: If you continue driving under these conditions, the clutch will burn out and the vehicle will no longer be drivable.

MONITOR STRATEGY

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL ENABLING CONDITIONS

TYPICAL ENABLING CONDITIONS

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

[ON malfunction] Detection condition: Total accumulated time of ON malfunctions (a), (b), (c), (d) and (e) is 0.5 second or more

TYPICAL MALFUNCTION THRESHOLDS

INSPECTION PROCEDURE

1 CHECK OTHER DTCS OUT PUT (IN ADDITION TO DTC P2714)

(a) Connect the OBD II scan tool or intelligent tester together with the CAN VIM (controller area network vehicle interface module) to the DLC3.

(b) Turn the ignition switch to the ON position and turn the OBD II scan tool or the intelligent tester main switch ON.

(c) When you use intelligent tester: Select the item "DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES" (d) Read the DTCs using the OBD II scan tool or the intelligent tester.

Result

HINT: If any other codes besides "P2714" are output, perform the troubleshooting for those DTCs first.

2 INSPECT SHIFT SOLENOID VALVE SLT

INSPECT SHIFT SOLENOID VALVE SLT

(a) Remove the shift solenoid valve SLT.

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

Standard resistance

(c) Connect the positive (+) lead with a 21 W bulb to terminal 2 and the negative (-) lead to terminal 1 of the solenoid valve connector, then check the movement of the valve.

OK: The solenoid makes an operating sound.

3 INSPECT TRANSMISSION VALVE BODY ASSEMBLY

OK: There are no foreign objects on each valve.

4 INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY

OK: The torque converter clutch operates normally.

REPAIR OR REPLACE AUTOMATIC TRANSAXLE ASSEMBLY

Shift Solenoid "E" Control Circuit
DESCRIPTION Shifting from 1st to 5th is performed in combination with "ON" and "OFF" operation of the shift solenoid valves SL1, SL2, SL3, S4 and SR which are controlled by ...

Pressure Control Solenoid "D" Electrical (Shift Solenoid Valve SLT)
DESCRIPTION The linear solenoid valve (SLT) controls the transmission line pressure for smooth transmission operation based on signals from the throttle position sensor and the vehicle speed senso ...

Other materials:

Disassembly
1. REMOVE STEERING INTERMEDIATE SHAFT ASSEMBLY (a) Align the matchmarks on the steering intermediate shaft assembly and main shaft. (b) Remove the bolt and steering intermediate shaft assembly. 2. REMOVE KEY CYLINDER LIGHT ASSEMBLY (w/o Engine Immobiliser System) 3. REMOVE TRANSPONDER K ...

Removal
HINT:  Use the same procedures for the RH side and LH side.  The procedures listed below are for the LH side. 1. PRECAUTION CAUTION: Be sure to read "PRECAUTION" thoroughly before servicing. 2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait for 90 s ...

Clock
PARTS LOCATION On-vehicle inspection 1. INSPECT INTEGRATION CONTROL & PANEL ASSEMBLY  Disconnect the A9 connector.  Measure the voltage according to the value(s) in the table below. Standard voltage Measure the resistance according to the value(s) in the ...

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