2007 TOYOTA SIENNA Service Repair Manual

flat tire bulb jack points heating cabin filter length

Page 1705 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 1706 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 1707 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 1708 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AX–32U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
DTC CHECK / CLEAR
1. DTC CHECK (NORMAL MODE)
NOTICE:
When the diagnostic system is switched from the
normal mode to the check mode

AX–32U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
DTC CHECK / CLEAR
1. DTC CHECK (NORMAL MODE)
NOTICE:
When the diagnostic system is switched from the
normal mode to the check mode, all the DTCs and
freeze frame data recorded in the normal mode will
be erased. So before switching modes, always check
the DTCs and freeze frame data, and note them
down.
(a) Checking DTCs using the OBD II scan tool or
intelligent tester.
(1) Turn the ignition switch off.
(2) Connect the intelligent tester together with the
CAN VIM (controller area network vehicle
interface module) to the DLC3.
(3) Turn the ignition switch to the ON position and
turn the OBD II scan tool or the intelligent tester
main switch on.
(4) Select the item "DIAGNOSIS / ENHANCED
OBD II / DTC INFO / CURRENT CODES".
(5) Use the OBD II scan tool or intelligent tester to
check the DTCs and freeze frame data and note
them down (For operating instructions, see the
OBD II scan tool's instruction book).
NOTICE:
When simulating symptoms with an OBD II
scan tool (excluding intelligent tester) to
check the DTCs, use the normal mode. For
codes on the DTCs chart which are subject
to "2 trip detection logic",
Turn the ignition switch off after the symptom is
simulated once. Then repeat the simulation
process again. When the problem has been
simulated twice, the MIL illuminates and the
DTCs are recorded in the ECM.
2. DTC CLEAR
(a) When using the OBD II scan tool or intelligent
tester: Clearing the DTCs.
(1) Connect the intelligent tester together with the
CAN VIM (controller area network vehicle
interface module) to the DLC3.
(2) Turn the ignition switch to the ON position and
turn the OBD II scan tool or the intelligent tester
main switch on.
(3) Select the item "DIAGNOSIS / ENHANCED
OBD II / DTC INFO / CLEAR CODES [YES]
button".
HINT:
When operating the OBD II scan tool (complying
with SAE J1978) or intelligent tester to erase the
codes, the DTCs and freeze frame data will be
erased. (See the OBD II scan tool's instruction
book for operating instructions.)
C159873E01

Page 1709 of 3000

TOYOTA SIENNA 2007 Service Repair Manual U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEMAX–33
AX
(b) When not using the OBD II scan tool or intelligent
tester: Clearing the DTCs.
(1) Disconnect the battery terminal or remove th

Page 1710 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AX–34U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
CHECK MODE PROCEDURE
HINT:
Check mode has a higher sensitivity to malfunctions and can
detect malfunction that normal mode cannot

AX–34U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
CHECK MODE PROCEDURE
HINT:
Check mode has a higher sensitivity to malfunctions and can
detect malfunction that normal mode cannot detect. Check
mode can also detect all the malfunctions that normal mode
can detect. In check mode, DTCs are detected with 1-trip
detection logic.
1. DTC CHECK (CHECK MODE)
HINT:
Intelligent tester only: Compared to the normal mode, the
check mode is more sensitive for detecting malfunctions.
Furthermore, the same diagnostic items which are
detected in the normal mode can also be detected in the
check mode.
(a) Procedure for Check Mode using the intelligent
tester.
(1) Check the initial conditions.
• Battery positive voltage 11 V or more
• Throttle valve fully closed
• Transaxle in the P or N position
• A/C switch is off
(2) Turn the ignition switch off.
(3) Connect the intelligent tester together with the
CAN VIM (controller area network vehicle
interface module) to the DLC3.
(4) Turn the ignition switch to ON position and turn
the intelligent tester main switch on.
(5) Select the item "DIAGNOSIS/ENHANCED OBD
II/CHECK MODE" (Check that the MIL flashes).
NOTICE:
All DTCs and freeze frame data recorded will
be erased if: 1) the intelligent tester is used
to change the ECM from normal mode to
check mode or vice-versa; or 2) during check
mode, the ignition switch is turned from the
ON to ACC position or turned OFF.
(6) Start the engine (the MIL goes off after the
engine starts).
(7) Perform "MONITOR DRIVE PATTERN" for the
ECT test (See page AX-17). (Or, simulate the
conditions of the malfunction described by the
customer).
NOTICE:
Leave the ignition switch in the ON position
until you have checked the DTCs, etc.
(8) After simulating malfunction conditions, use the
intelligent tester diagnosis selector to check the
DTCs and freeze frame data, etc.
(9) When you use intelligent tester: Select the item
"DIAGNOSIS / ENHANCED OBD II / DTC INFO
/ CURRENT CODES".
(10)After checking the DTC, inspect the applicable
circuit.
C159873E01
BR03904E17

Page 1711 of 3000

TOYOTA SIENNA 2007 Service Repair Manual U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEMAX–35
AX
(11)(See page AX-35) to confirm the details of the
DTCs.
2. DTC CLEAR
(a) When using the OBD II scan tool or intelligent
tester:

Page 1712 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AX–36U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
FAIL-SAFE CHART
1. FAIL-SAFE
This function minimizes the loss of the ECT functions
when any malfunction occurs in a sensor or sole

AX–36U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
FAIL-SAFE CHART
1. FAIL-SAFE
This function minimizes the loss of the ECT functions
when any malfunction occurs in a sensor or solenoid.
(a) ATF (Automatic Transmission Fluid) temperature
sensor:
When the ATF temperature sensor has a
malfunction, 5th upshift is prohibited.
(b) Counter gear speed sensor NC (Speed sensor NC):
When the counter gear speed sensor has a
malfunction, 5th upshift is prohibited.
(c) Shift solenoid valve DSL:
When the solenoid valve DSL has a malfunction, the
current to the solenoid valve is stopped.
This stops lock-up control, then fuel economy
decreases.
(d) Shift solenoid valve SL1, SL2, SL3 and S4:
Fail safe function:
If either of the shift solenoid valve circuits develops
an open or short, the ECM turns the other shift
solenoid "ON" and "OFF" in order to shift into the
gear positions shown in the table below.
Manual shifting as shown in the following table must
be done (In case of a short circuit, the ECM stops
sending the current to the short circuited solenoid).
Even if starting the engine in the fail-safe mode, the
gear position remains in the same position.
HINT:
FL: Flex Lock-up
NormalSolenoid ValveSL1 ON OFF ON OFF OFF
SL2 ON ON OFF FL FL
SL3 OFF OFF OFF ON ON
S4 OFF OFF OFF OFF ON
Gear Position 1st 2nd 3rd 4th 5th
SL1
Malfunction
(During driving
at 1st or 2nd)Solenoid ValveSL1 OFF
SL2 ON ON OFF to ON FL to ON FL to ON
SL3 OFF OFF OFF ON to OFF ON to OFF
S4 OFF OFF OFF OFF ON to OFF
Gear Position 1st to 2nd 2nd 3rd to 2nd 4th to 2nd 5th to 2nd
SL1
Malfunction
(During driving
at 3rd)Solenoid ValveSL1 OFF
SL2 ON to FL ON to FL OFF to FL FL FL
SL3 OFF OFF OFF ON to OFF ON to OFF
S4 OFF to ON OFF to ON OFF to ON OFF to ON ON
Gear Position 1st to 4th 2nd to 4th 3rd to 4th 4th 5th to 4th
SL1
Malfunction
(During driving
at 4th or 5th)Solenoid ValveSL1 OFF
SL2 ON to FL ON to FL OFF to FL FL FL
SL3 OFF to ON OFF to ON OFF to ON ON ON
S4 OFF OFF OFF OFF ON
Gear Position 1st to 4th 2nd to 4th 3rd to 4th 4th 5th to 4th

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