transmission oil TOYOTA SIENNA 2007 Service Owner's Manual

CO–322GR-FE COOLING – RADIATOR
CO
17. DISCONNECT NO. 2 OIL COOLER OUTLET TUBE
SUB-ASSEMBLY
(a) Disconnect the No. 1 oil cooler inlet and No. 1 oil
cooler outlet hoses from the No. 2 oil cooler outlet
tube sub-assembly.
(b) Disconnect the No. 1 transmission oil cooler hoses
from the radiator.
(c) Remove the 2 bolts and No. 2 oil cooler outlet tube
sub-assembly.
18. REMOVE HEADLIGHT ASSEMBLY RH
(a) Use the same procedures for the RH side and LH
side.
HINT:
See page LI-69
19. REMOVE RADIATOR SIDE DEFLECTOR RH
(a) Disengage the 3 claws and remove the radiator side
deflector RH.
A161467E02
A161464

2GR-FE COOLING – RADIATORCO–43
CO
(b) Connect the No. 1 transmission oil cooler hoses to
the radiator.
(c) Connect the No. 1 oil cooler inlet and No. 1 oil
cooler outlet hoses to the No. 2 oil cooler outlet tube
sub-assembly.
13. INSTALL RADIATOR UPPER SUPPORT SUB-
ASSEMBLY
(a) Install the radiator upper support sub-assembly with
the 4 bolts.
Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf)
14. CONNECT COOLING FAN ECU CONNECTOR
(a) Connect the connector.
(b) Attach the clamp.
A161467E02
A161463
A161472E01

AX–16U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
(9) Disconnect the connector of the transmission
wire.
HINT:
Disconnect the connector only when performing
the D position stall test.
(10)Start the engine.
(11)Firmly depress the brake pedal, shift to the D
position, depress the accelerator pedal all the
way down and check the line pressure while the
stall test is performed.
Specified line pressure:
(12)Turn the ignition switch off.
(13)Remove the SST, install the test plug A.
(14)Remove the test plug B, install the SST and
start engine.
SST 09992-00095 (09992-00231, 09992-
00271)
(15)Connect the transmission wire connector,
depress the brake pedal firmly, shift to the R
position and check that the line pressure while
the engine is idling and during the stall test.
Specified line pressure:
(16)Remove the SST, install the test plug B.
(17)Clear the DTC.
Evaluation:
C160154E01
Condition
D position kPa (kgf / cm2, psi)
Stall test931 to 1,031 kPa
(9.5 to 10.5 kgf/cm
2, 135 to 150 psi)
Condition
R position kPa (kgf / cm
2, psi)
Idling672 to 742 kPa
(6.9 to 7.6 kgf/cm
2, 97 to 108 psi)
Stall test1,768 to 1,968 kPa
(18.0 to 20.1 kgf/cm
2, 256 to 285 psi)
Problem Possible cause
Measured values are higher than specified in all positions• Shift solenoid valve SLT defective
• Regulator valve defective
Measured values are lower than specified in all positions• Shift solenoid valve SLT defective
• Regulator valve defective
• Oil pump defective
• U/D (Underdrive) direct clutch defective
Pressure is low in the D position only• D position circuit fluid leak
• Forward clutch defective
Pressure is low in the R position only• R position circuit fluid leak
• Reverse clutch defective
• 1st and reverse brake defective

U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEMAX–117
AX
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(%)
DTC P2714Pressure Control Solenoid "D" Performance
(Shift Solenoid Valve SLT)
DTC No. DTC Detection Condition Trouble Area
P2714ECM detects a malfunction on SLT (ON side) according
to the revolution difference of the turbine, intermediate
and the output shaft, and also by the oil pressure. (2-
trip detection logic)• Shift solenoid valve SLT remains closed
• Valve body is blocked
• Automatic transaxle (clutch, brake or gear, etc.)
C108924E02

AX–118U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
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
TYPICAL ENABLING CONDITIONS
ON malfunction:
ON malfunction (A):
Related DTCs P2714: Shift solenoid valve SLT/ON malfunction
Required sensors/ComponentsShift solenoid valve SLT, Speed sensor (NT), Speed sensor (NC),
Crankshaft position sensor (NE)
Frequency of operation Continuous
Duration 0.5 sec.
MIL operation 2 driving cycles
Sequence of operation None
The monitor will run whenever this DTC is not present. None
Transmission range"D"
TFT (Transmission fluid temperature) -20
C (-4F) or more
TFT sensor circuitNot circuit malfunction
Turbine speed sensor circuit Not circuit malfunction
Intermediate shaft speed sensor circuit Not circuit malfunction
Output speed sensor circuitNot circuit malfunction
Shift solenoid valve SL1 circuit Not circuit malfunction
Shift solenoid valve SL2 circuit Not circuit malfunction
Shift solenoid valve SL3 circuit Not circuit malfunction
Shift solenoid valve S4 circuit Not circuit malfunction
Shift solenoid valve SR circuit Not circuit malfunction
Shift solenoid valve DSL circuit Not circuit malfunction
Shift solenoid valve SLT circuit Not circuit malfunction
Electronic throttle systemNot circuit malfunction
ECM selected gear 1st
Temporary MAIN gear 1st or 2nd or 3rd or 4th
NT - NC x Temporary MAIN gear ratio
NT: Input (turbine) speed
NC: Intermediate shaft speed100 rpm or more at Intermediate shaft speed 1,000 rpm
Temporary U/D gear Low
NC - NO x Temporary U/D gear ratio
NO: Output speed300 rpm or more at Output speed 1,000 rpm
TT
TT: Turbine Torque900 Nm or more
NT 250 rpm or more
NC 250 rpm or more
NO 250 rpm or more

AX–16U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
(9) Disconnect the connector of the transmission
wire.
HINT:
Disconnect the connector only when performing
the D position stall test.
(10)Start the engine.
(11)Firmly depress the brake pedal, shift to the D
position, depress the accelerator pedal all the
way down and check the line pressure while the
stall test is performed.
Specified line pressure:
(12)Turn the ignition switch off.
(13)Remove the SST, install the test plug A.
(14)Remove the test plug B, install the SST and
start engine.
SST 09992-00095 (09992-00231, 09992-
00271)
(15)Connect the transmission wire connector,
depress the brake pedal firmly, shift to the R
position and check that the line pressure while
the engine is idling and during the stall test.
Specified line pressure:
(16)Remove the SST, install the test plug B.
(17)Clear the DTC.
Evaluation:
C160154E01
Condition
D position kPa (kgf / cm2, psi)
Stall test931 to 1,031 kPa
(9.5 to 10.5 kgf/cm
2, 135 to 150 psi)
Condition
R position kPa (kgf / cm
2, psi)
Idling672 to 742 kPa
(6.9 to 7.6 kgf/cm
2, 97 to 108 psi)
Stall test1,768 to 1,968 kPa
(18.0 to 20.1 kgf/cm
2, 256 to 285 psi)
Problem Possible cause
Measured values are higher than specified in all positions• Shift solenoid valve SLT defective
• Regulator valve defective
Measured values are lower than specified in all positions• Shift solenoid valve SLT defective
• Regulator valve defective
• Oil pump defective
• U/D (Underdrive) direct clutch defective
Pressure is low in the D position only• D position circuit fluid leak
• Forward clutch defective
Pressure is low in the R position only• R position circuit fluid leak
• Reverse clutch defective
• 1st and reverse brake defective

U151E AUTOMATIC TRANSAXLE – TRANSMISSION WIREAX–131
AX
REMOVAL
1. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
2. REMOVE ENGINE UNDER COVER NO.1
3. DRAIN AUTOMATIC TRANSAXLE FLUID
(a) Remove the drain plug and gasket, and drain the
AT F.
(b) Install a new gasket and the drain plug.
Torque: 49 N*m (500 kgf*cm, 36 ft.*lbf)
4. REMOVE AUTOMATIC TRANSAXLE OIL PAN SUB-
ASSEMBLY
(a) Remove the 18 bolts, oil pan and gasket.
NOTICE:
Some fluid will remain in the oil pan. Carefully
remove the oil pan so that fluid remaining in the
pan does not spill out.
(b) Remove the 2 magnets from the oil pan.
(c) Examine particles in the pan.
(1) Collect any steel chips using the removed
magnets. Look carefully at the chips and
particles in the pan and on the magnets to see
the type of wear which might be found in the
transaxle.
Result:
Steel (magnetic):
Wear of the bearing, gear or plate
Brass (non-magnetic):
Wear of the bearing
5. DISCONNECT TRANSMISSION WIRE
(a) Disconnect the 7 shift solenoid valve connectors.
(b) Remove the bolt and lock plate, and disconnect the
ATF temperature sensor.
C091925
D030865
AT00103
C091927E04

AX–132U151E AUTOMATIC TRANSAXLE – TRANSMISSION WIRE
AX
6. REMOVE TRANSMISSION WIRE
(a) Disconnect the transmission wire connector.
(b) Remove the bolt and transmission wire.
(c) Remove the O-ring from the transmission wire.
INSTALLATION
1. INSTALL TRANSMISSION WIRE
(a) Coat the O-ring of the transmission wire connector
with ATF and install it.
(b) Install the transmission wire with the bolt.
Torque: 5.4 N*m (55 kgf*cm, 48 ft.*lbf)
2. CONNECT TRANSMISSION WIRE
(a) Coat the O-ring of the ATF temperature sensor with
AT F.
(b) Install the ATF temperature sensor with the lock
plate and bolt.
Torque: 6.6 N*m (67 kgf*cm, 58 ft.*lbf)
(c) Connect the 7 shift solenoid valve connectors.
3. INSTALL AUTOMATIC TRANSAXLE OIL PAN SUB-
ASSEMBLY
(a) Install the 2 magnets in the oil pan.
(b) Apply seal packing to the 18 bolts.
Seal packing:
THREE BOND 2430 or equivalent
D030866
D030867
D030866
C091927E04
D030865

U151E AUTOMATIC TRANSAXLE – TRANSMISSION WIREAX–133
AX
(c) Using a new gasket, install the oil pan to the
transaxle case with the 18 bolts.
Torque: 7.8 N*m (80 kgf*cm, 69 in.*lbf)
NOTICE:
Apply seal packing to the bolts and tighten them
within 10 minutes of application.
4. CONNECT CABLE TO NEGATIVE BATTERY
TERMINAL
5. ADD AUTOMATIC TRANSAXLE FLUID
6. INSPECT AUTOMATIC TRANSAXLE FLUID (See page
AX-123)
7. INSTALL ENGINE UNDER COVER NO.1
8. RESET MEMORY
HINT:
(See page AX-16)
C091925

AX–136U151E AUTOMATIC TRANSAXLE – VALVE BODY ASSEMBLY
AX
REMOVAL
1. REMOVE ENGINE UNDER COVER NO.1
2. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
3. DRAIN AUTOMATIC TRANSAXLE FLUID (See page
AX-131)
4. REMOVE AUTOMATIC TRANSAXLE OIL PAN SUB-
ASSEMBLY
(a) Remove the 18 bolts, oil pan and gasket.
NOTICE:
Some fluid will remain in the oil pan. Carefully
remove the oil pan so that the fluid remaining in
the pan does not spill out.
(b) Remove the 2 magnets from the oil pan.
(c) Examine particles in the pan.
(1) Collect any steel chips using the removed
magnets. Look carefully at the chips and
particles in the pan and on the magnets to see
the type of wear which might be found in the
transaxle.
Result:
Steel (magnetic):
Wear of the bearing, gear or plate
Brass (non-magnetic):
Wear of the bearing
5. DISCONNECT TRANSMISSION WIRE
(a) Disconnect the 7 shift solenoid valve connectors.
(b) Remove the bolt and lock plate, and disconnect the
ATF temperature sensor.
C091925
D030865
AT00103
C091927E04