2007 TOYOTA SIENNA Service Repair Manual

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Page 1481 of 3000

TOYOTA SIENNA 2007 Service Repair Manual U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEMAX–115
AX
TYPICAL MALFUNCTION THRESHOLDS
P0985: Range check (Low resistance):
P0986: Range check (High resistance):
COMPONENT OPERATING RANG

Page 1482 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AX–116U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
(a) Connect the transmission wire connector to the
transaxle.
(b) Disconnect the connector from the ECM.
(c) Measure the resistan

Page 1483 of 3000

TOYOTA SIENNA 2007 Service Repair Manual U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEMAX–117
AX
SYSTEM DESCRIPTION
The linear solenoid valve (SLT) controls the transmission line pressure for smooth transmission operation
base

Page 1484 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 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

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

Page 1485 of 3000

TOYOTA SIENNA 2007 Service Repair Manual U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEMAX–119
AX
ON malfunction (B):
ON malfunction (C):
ON malfunction (D):
ON malfunction (E):
ECM selected gear 2nd
Temporary MAIN gear 1st or 2

Page 1486 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AX–120U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
TYPICAL MALFUNCTION THRESHOLDS
[ON malfunction]
Detection condition: Total accumulated time of ON malfunctions (a), (b), (c), (d)

AX–120U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
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
ON malfunction (A):
ON malfunction (B):
ON malfunction (C):
ON malfunction (D):
ON malfunction (E):
INSPECTION PROCEDURE
(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.
NC250 rpm or more
NO250 rpm or more
NT - NC x 1st gear ratio 100 rpm or more at Intermediate shaft speed 1,000 rpm
NC - NO x Low gear ratio 300 rpm or more at Output speed 1,000 rpm
Duration1 sec. or more
Shift Solenoid valve SL1 Performance Not performance malfunction
NT - NC x 2nd gear ratio 100 rpm or more at Intermediate shaft speed 1,000 rpm
NC - NO x Low gear ratio 300 rpm or more at Output speed 1,000 rpm
Duration1 sec. or more
Shift Solenoid valve SL1 Performance Not performance malfunction
NT - NC x 3rd gear ratio 100 rpm or more at Intermediate shaft speed 1,000 rpm
NC - NO x Low gear ratio 300 rpm or more at Output speed 1,000 rpm
Duration1 sec. or more
Shift Solenoid valve SL1 Performance Not performance malfunction
NT - NC x 4th gear ratio 100 rpm or more at Intermediate shaft speed 1,000 rpm
NC - NO x Low gear ratio 300 rpm or more at Output speed 1,000 rpm
Duration1 sec. or more
Shift Solenoid valve SL1 Performance Not performance malfunction
NT - NC x 4th gear ratio 100 rpm or more at Intermediate shaft speed 1,000 rpm
NC - NO x High gear ratio 300 rpm or more at Output speed 1,000 rpm
Duration1 sec. or more
Shift Solenoid valve SL1 Performance Not performance malfunction
1CHECK OTHER DTCS OUT PUT (IN ADDITION TO DTC P2714)

Page 1487 of 3000

TOYOTA SIENNA 2007 Service Repair Manual U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEMAX–121
AX
Result
HINT:
If any other codes besides "P2714" are output, perform the
troubleshooting for those DTCs first.
B
A
(a) Rem

Page 1488 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AX–122U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
NG
OKREPLACE TORQUE CONVERTER CLUTCH
ASSEMBLY
REPAIR OR REPLACE AUTOMATIC TRANSAXLE ASSEMBLY

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