2007 TOYOTA SIENNA Transaxle

U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEMAX–3
AX
DEFINITION OF TERMS
Te r m D e f i n i t i o n
Monitor description Description of what the ECM monitors and how it detects malfunctions (monitoring purpose and its details).
Related DTCs Diagnostic code
Typical enabling conditionPreconditions that allow the ECM to detect malfunctions.
With all preconditions satisfied, the ECM sets the DTC when the monitored value(s) exceeds the
malfunction threshold(s).
Sequence of operationThe priority order that is applied to monitoring, if multiple sensors and components are used to detect the
malfunction.
While another sensor is being monitored, the next sensor or component will not be monitored until the
previous monitoring has concluded.
Required sensor/components The sensors and components that are used by the ECM to detect malfunctions.
Frequency of operationThe number of times that the ECM checks for malfunctions per driving cycle.
"Once per driving cycle" means that the ECM detects malfunction only one time during a single driving
cycle.
"Continuous" means that the ECM detects malfunction every time when enabling condition is met.
DurationThe minimum time that the ECM must sense a continuous deviation in the monitored value(s) before
setting a DTC. This timing begins after the "typical enabling conditions" are met.
Malfunction thresholds Beyond this value, the ECM will conclude that there is a malfunction and set a DTC.
MIL operationMIL illumination timing after a defect is detected.
"Immediately" means that the ECM illuminates MIL the instant the ECM determines that there is a
malfunction.
"2 driving cycle" means that the ECM illuminates MIL if the same malfunction is detected again in the 2nd
driving cycle.
Component operating rangeNormal operation range of sensors and solenoids under normal driving conditions.
Use these ranges as a reference.
They cannot be used to judge if a sensor or solenoid is defective or not.

AX–4U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
PARTS LOCATION
C160152E02

U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE ASSEMBLYAX–163
AX
REMOVAL
1. REMOVE ENGINE ASSEMBLY WITH TRANSAXLE
HINT:
(See page EM-26)
2. REMOVE FRONT DRIVE SHAFT ASSEMBLY LH
HINT:
(See page DS-6)
3. REMOVE FRONT DRIVE SHAFT ASSEMBLY RH
HINT:
(See page DS-6)
4. REMOVE TRANSMISSION CONTROL CABLE CLAMP
(a) Remove the bolt and the transmission control cable
clamp.
5. REMOVE WIRE HARNESS CLAMP
(a) Disconnect the wire harnesses from the clamp.
(b) Remove the 3 bolts and 2 clamps.
6. DISCONNECT WIRE HARNESS
(a) Remove the bolt and disconnect the wire harness.
C083203
D030465
G025456

AX–164U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE ASSEMBLY
AX
7. REMOVE STARTER ASSEMBLY
(a) Disconnect the connector (1).
(b) Remove the nut (2) and disconnect the starter wire.
(c) Remove the 2 bolts (3) and starter assembly.
8. DISCONNECT CONNECTORS
(a) Disconnect the transmission wire connector.
(b) Disconnect the park/neutral position switch
connector.
(c) Disconnect the 2 speed sensor connectors.
9. REMOVE TRANSMISSION CONTROL CABLE
BRACKET NO.1
(a) Remove the bolt and automatic transmission oil
cooler tube clamp.
(b) Remove the 2 bolts and transmission control cable
bracket No.1.
10. REMOVE TRANSMISSION OIL FILLER TUBE SUB-
ASSEMBLY
(a) Remove the ATF level gauge.
(b) Disconnect the wire harnesses 2 clamps from the oil
filler tube.
(c) Remove the 2 bolts and oil filler tube.
(d) Remove the O-ring from the oil filler tube.
D030464E02
D030864E04
D030467
D030468

U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE ASSEMBLYAX–165
AX
11. REMOVE OIL COOLER INLET TUBE NO.1
(a) Using SST and a wrench, disconnect the oil cooler
inlet tube No.1.
SST 09023-12701
12. REMOVE OIL COOLER OUTLET TUBE NO.1
(a) Using SST and a wrench, disconnect the oil cooler
outlet tube No.1.
SST 09023-12701
13. REMOVE ENGINE MOUNTING BRACKET FRONT
(a) Remove the 3 bolts and engine mounting bracket
front.
14. REMOVE AUTOMATIC TRANSAXLE ASSEMBLY
(a) Remove the 2 bolts and flywheel housing under
cover.
(b) Turn the crankshaft to gain access and remove the
6 bolts while holding the crankshaft pulley bolt with a
wrench.
HINT:
There will be one green colored bolt.
(c) Remove the 10 bolts.
(d) Separate and remove the automatic transaxle.
15. REMOVE TORQUE CONVERTER CLUTCH
ASSEMBLY
16. INSPECT TORQUE CONVERTER CLUTCH
ASSEMBLY
HINT:
(See page AX-170)
D030469E03
D030470
D030471
D030472
C163046

AX–166U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE ASSEMBLY
AX
INSTALLATION
1. INSTALL TORQUE CONVERTER CLUTCH
ASSEMBLY
(a) Install the torque converter clutch to the automatic
transaxle.
(b) Using vernier calipers and a straight edge, measure
the dimension "A" between the transaxle fitting part
of the engine and the converter fitting part of the
drive plate (*1).
(c) Using vernier calipers and a straight edge, measure
the dimension "B" shown in the illustration and
check that "B" is greater than "A" (measured in step
(*1)).
Standard:
A + 1 mm (0.03937 in.) or more
NOTICE:
Remember to minus the thickness of the
straight edge.
2. INSTALL AUTOMATIC TRANSAXLE ASSEMBLY
(a) Install the automatic transaxle to the engine with the
10 bolts.
Torque: Bolt A
64 N*m (650 kgf*cm, 47 ft.*lbf)
Bolt B
46 N*m (470 kgf*cm, 34 ft.*lbf)
Bolt C
43 N*m (439 kgf*cm, 32 ft.*lbf)
(b) Apply a few drops of adhesive to each of 2 threads
on the tip of the 6 torque converter clutch mounting
bolts.
Adhesive:
Part No. 08833-00070, THREE BOND 1324
or equivalent
(c) Install the 6 torque converter clutch mounting bolts.
Torque: 41 N*m (413 kgf*cm, 30 ft.*lbf)
NOTICE:
First install the black colored bolt, and then the
remaining 5 bolts.
D031087E01
C065911E01
C163046E01
D030472

U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE ASSEMBLYAX–167
AX
(d) Install the flywheel housing under cover to the
automatic transaxle with the 2 bolt.
Torque: 7.8 N*m (80 kgf*cm, 69 in.*lbf)
3. INSTALL ENGINE MOUNTING BRACKET FRONT
(a) Install the engine mounting bracket front to the
automatic transaxle with the 3 bolts.
Torque: 64 N*m (653 kgf*cm, 47 ft.*lbf)
4. INSTALL TRANSMISSION OIL FILLER TUBE SUB-
ASSEMBLY
(a) Coat a new O-ring with ATF, and install it to the
transmission oil filler tube sub-assembly.
(b) Install the transmission oil filler tube sub-assembly
and bolt to the automatic transaxle.
Torque: 5.5 N*m (56 kgf*cm, 49 in.*lbf)
(c) Connect the 2 clamps to the oil filler tube.
(d) Install the ATF level gauge.
5. INSTALL OIL COOLER INLET TUBE NO.1
(a) Temporarily install the oil cooler outlet tube No.1.
(b) Temporarily install the oil cooler inlet tube No.1.
(c) Install the oil cooler tube clamp and bolt.
Torque: 5.5 N*m (56 kgf*cm, 49 in.*lbf)
(d) Using SST and a wrench, tighten the oil cooler inlet
tube No.1.
SST 09023-12701
Torque: 34 N*m (347 kgf*cm, 25 ft.*lbf)
6. INSTALL OIL COOLER OUTLET TUBE NO.1
(a) Using SST and a wrench, tighten the oil cooler
outlet tube No.1.
SST 09023-12701
Torque: 34 N*m (347 kgf*cm, 25 ft.*lbf)
D030471
D030470
D030700
D030699
D030469E04

AX–168U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE ASSEMBLY
AX
7. INSTALL TRANSMISSION CONTROL CABLE
BRACKET NO.1
(a) Install the control cable bracket No.1 with the 2
bolts.
Torque: 12 N*m (122 kgf*cm, 9 ft.*lbf)
8. CONNECT CONNECTORS
(a) Connect the transmission wire connector.
(b) Connect the park/neutral position switch connector.
(c) Connect the 2 speed sensor connectors.
9. INSTALL STARTER ASSEMBLY
(a) Install the starter assembly with the 2 bolts (1).
Torque: 37 N*m (377 kgf*cm, 27 ft.*lbf)
(b) Connect the connector (2).
(c) Connect the starter wire with the nut (3).
Torque: 9.8 N*m (100 kgf*cm, 87 in.*lbf)
10. CONNECT WIRE HARNESS
(a) Connect the wire harness with the bolt.
Torque: 13 N*m (133 kgf*cm, 10 ft.*lbf)
D030467
D030864E03
D030464E03
G025456