2007 TOYOTA SIENNA Service Repair Manual

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Page 1825 of 3000

TOYOTA SIENNA 2007 Service Repair Manual U151F AUTOMATIC TRANSAXLE – VALVE BODY ASSEMBLYAX–139
AX
INSTALLATION
1. INSTALL TRANSMISSION VALVE BODY ASSEMBLY
(a) Install the shift solenoid valve SL1 to the valve body
assembly with the bo

Page 1826 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AX–140U151F AUTOMATIC TRANSAXLE – VALVE BODY ASSEMBLY
AX
(f) Install the shift solenoid valve SL3 and SLT to the
valve body assembly.
(g) Install the lock plate to the valve body assembly with

Page 1827 of 3000

TOYOTA SIENNA 2007 Service Repair Manual U151F AUTOMATIC TRANSAXLE – VALVE BODY ASSEMBLYAX–141
AX
(c) Install the oil strainer with the 3 bolts.
Torque: 11 N*m (110 kgf*cm, 8 ft.*lbf)
3. INSTALL TRANSMISSION WIRE
(a) Coat the O-ring wi

Page 1828 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AX–22U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
PROBLEM SYMPTOMS TABLE
HINT:
• If a normal code is displayed during the diagnostic trouble
code check although the trouble still

AX–22U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
PROBLEM SYMPTOMS TABLE
HINT:
• If a normal code is displayed during the diagnostic trouble
code check although the trouble still occurs, check the
electrical circuits for each symptom in the order given in
the charts on the following pages and proceed to the page
given for troubleshooting.
• The Matrix Chart is divided into 2 chapters.
• When the circuit on which mark *1 is attached is a
malfunction, DTC could be output.
Refer to the table below when the trouble cause is considered
to be electrical. If the instruction PROCEED TO NEXT
CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS
TABLE is given in the flowchart of each circuit, inspect the
suspected areas in descending order for each symptom. If
the trouble still occurs even though there are no
abnormalities in the inspections listed for the symptoms,
check and replace the ECM.
1. Chapter 1: Electronic Circuit Matrix Chart
Symptom Suspected Area See page
No down-shift (A particular gear, from 1st to 4th gear,
is not down-shifted)ECMIN-30
No down-shift (5th -> 4th)Transmission control switch (D <--> 4 position) circuitAX-38
Shift solenoid valve S4 circuit *1AX-104
ECMIN-30
No up-shift (A particular gear, from 1st to 4th gear, is
not up-shifted)ECMIN-30
No up-shift (4th -> 5th)Transmission control switch (D <--> 4 position) circuitAX-38
Shift solenoid valve S4 circuit *1AX-104
ECMIN-30
No lock-upStop light switch circuit *1AX-56
Engine coolant temp. sensor circuit *1ES-56
ECMIN-30
No lock-up off ECMIN-30
Shift point too high or too lowThrottle position sensor circuit *1ES-56
ECMIN-30
Up-shift to 5th from 4th while shift lever is in 4 positionTransmission control switch (D <--> 4 position) circuitAX-38
ECMIN-30
Up-shift to 5th from 4th while engine is coldEngine coolant temp. sensor circuit *1ES-56
ECMIN-30
Up-shift to 2nd from 1st while shift lever is in L positionTransmission control switch (L <--> 2 position) circuit *1AX-38
ECMIN-30
Harsh engagement (N -> D)Shift solenoid valve SL1 circuit *1AX-70
ECMIN-30
Harsh engagement (Lock-up) ECMIN-30
Harsh engagement (Any driving position) ECMIN-30
Poor acceleration ECMIN-30
No kick-down ECMIN-30
Engine stalls when starting off or stopping ECMIN-30
Malfunction in shiftingPark/neutral position switch circuit *1AX-38
Transmission control switch (D <--> 4 position) circuitAX-38
ECMIN-30

Page 1829 of 3000

TOYOTA SIENNA 2007 Service Repair Manual U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEMAX–23
AX
2. Chapter 2: On-Vehicle Repair and Off-Vehicle Repair
Symptom Suspected Area See page
Vehicle does not move in any forward positio

U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEMAX–23
AX
2. Chapter 2: On-Vehicle Repair and Off-Vehicle Repair
Symptom Suspected Area See page
Vehicle does not move in any forward position and in
reverse positionsValve body assemblyAX-136
U/D brake (B3)AX-181
Torque converter clutchAX-172
Vehicle does not move in R positionValve body assemblyAX-136
Reverse clutch (C2)AX-181
1st and reverse brake (B2)AX-181
No up-shift (1st -> 2nd)Valve body assemblyAX-136
2nd and O/D brake (B1)AX-181
No up-shift (2nd -> 3rd)Valve body assemblyAX-136
Direct and O/D clutch (C0)AX-181
No up-shift (3rd -> 4th)Valve body assemblyAX-136
2nd and O/D brake (B1)AX-181
No up-shift (4th -> 5th)Shift solenoid valve S4AX-74
Valve body assemblyAX-136
U/D clutch (C3)AX-181
No down-shift (5th -> 4th)Shift solenoid valve S4AX-74
Valve body assemblyAX-136
No down-shift (4th -> 3rd) Valve body assemblyAX-136
No down-shift (3rd -> 2nd) Valve body assemblyAX-136
No down-shift (2nd -> 1st) Valve body assemblyAX-136
No lock-up or No lock-up offShift solenoid valve DSLAX-60
Valve body assemblyAX-136
Torque converter clutchAX-172
Harsh engagement (N -> D)Shift solenoid valve SL1AX-66
Valve body assemblyAX-136
C1 accumulatorAX-181
Forward clutch (C1)AX-181
No. 1 one-way clutch (F1)AX-181
U/D one-way clutch (F2)AX-181
Harsh engagement (Lock-up)Shift solenoid valve SL2AX-82
Valve body assemblyAX-136
Torque converter clutchAX-172
Harsh engagement (N -> R)Valve body assemblyAX-136
C2 accumulatorAX-181
Reverse clutch (C2)AX-181
1st and reverse brake (B2)AX-181
Harsh engagement (1st -> 2nd -> 3rd -> 4th -> 5th)Shift solenoid valve SLTAX-116
Valve body assemblyAX-136
Harsh engagement (1st -> 2nd)Valve body assemblyAX-136
2nd and O/D brake (B1)AX-181
Harsh engagement (2nd -> 3rd)Valve body assemblyAX-136
C0 accumulatorAX-181
Direct and O/D clutch (C0)AX-181
Harsh engagement (3rd -> 4th)Valve body assemblyAX-136
2nd and O/D brake (B1)AX-181
Harsh engagement (4th -> 5th)Valve body assemblyAX-136
C3 accumulatorAX-181
U/D clutch (B3)AX-181

Page 1830 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AX–24U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
Harsh engagement (5th -> 4th)Valve body assemblyAX-136
B3 accumulatorAX-181
Slip or shudder (Forward and reverse: After warm-up)Val

Page 1831 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AX–142U151F AUTOMATIC TRANSAXLE – SHIFT LOCK SYSTEM
AX
SHIFT LOCK SYSTEM
ON-VEHICLE INSPECTION
1. CHECK SHIFT LOCK OPERATION
(a) Move the shift lever to the P position.
(b) Turn the ignition swi

Page 1832 of 3000

TOYOTA SIENNA 2007 Service Repair Manual U151F AUTOMATIC TRANSAXLE – SHIFT LOCK SYSTEMAX–143
AX
(b) Measure the resistance according to the value(s) in
the table below.
HINT:
Do not disconnect the shift lock control unit
assembly con

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