2007 TOYOTA SIENNA Service Repair Manual

fuel tank removal jump start terminals fuel pressure engine child seat pairing phone

Page 1785 of 3000

TOYOTA SIENNA 2007 Service Repair Manual U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEMAX–113
AX
(a) Connect the transmission wire connector to the
transaxle.
(b) Disconnect the connector from the ECM.
(c) Measure the resistan

Page 1786 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AX–114U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
DESCRIPTION
Shifting from 1st to 5th is performed in combination with "ON" and "OFF" operation of the shift soleno

AX–114U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
DESCRIPTION
Shifting from 1st to 5th is performed in combination with "ON" and "OFF" operation of the shift solenoid
valves SL1, SL2, SL3, S4 and SR which are controlled by the ECM. If an open or short circuit occurs in
either of the shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow
the vehicle to be operated smoothly (Fail safe function).
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves "ON/OFF". When there is an open or
short circuit in any shift solenoid valve circuit, the ECM detects the problem and illuminates the MIL and
stores the DTC. And the ECM performs the fail-safe function and turns the other normal shift solenoid
valves "ON/OFF" (In case of an open or short circuit, the ECM stops sending current to the circuit.)
(See page AX-30).
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
P0985: Range check (Low resistance):
P0986: Range check (High resistance):
DTC P0985Shift Solenoid "E" Control Circuit Low (Shift
Solenoid Valve SR)
DTC P0986Shift Solenoid "E" Control Circuit High (Shift
Solenoid Valve SR)
DTC No. DTC Detection Condition Trouble Area
P0985ECM detects short in solenoid valve SR circuit 2 times
when solenoid valve SR is operated (1-trip detection
logic)• Short in shift solenoid valve SR circuit
• Shift solenoid valve SR
•ECM
P0986ECM detects open in solenoid valve SR circuit 2 times
when solenoid valve SR is not operated (1-trip
detection logic)• Open in shift solenoid valve SR circuit
• Shift solenoid valve SR
•ECM
Related DTCsP0985: Shift solenoid valve SR/Range check (Low resistance)
P0986: Shift solenoid valve SR/Range check (High resistance)
Required sensors/Components Shift solenoid valve SR
Frequency of operation Continuous
Duration 0.064 sec.
MIL operation Immediate
Sequence of operation None
The monitor will run whenever this DTC is not present. None
Shift solenoid valve SRON
Battery voltage8 V or more
Ignition switchON
StarterOFF
The monitor will run whenever this DTC is not present. None
Shift solenoid valve SROFF
Battery voltage8 V or more
Ignition switchON
StarterOFF

Page 1787 of 3000

TOYOTA SIENNA 2007 Service Repair Manual U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEMAX–115
AX
TYPICAL MALFUNCTION THRESHOLDS
P0985: Range check (Low resistance):
P0986: Range check (High resistance):
COMPONENT OPERATING RANG

Page 1788 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AX–116U151F 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 1789 of 3000

TOYOTA SIENNA 2007 Service Repair Manual U151F 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 1790 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AX–118U151F 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–118U151F 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 1791 of 3000

TOYOTA SIENNA 2007 Service Repair Manual U151F 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 1792 of 3000

TOYOTA SIENNA 2007 Service Repair Manual AX–120U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
TYPICAL MALFUNCTION THRESHOLDS
[ON malfunction]
Detection condition: Total accumulated time of ON malfunctions (a), (b), (c), (d)

AX–120U151F 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.
NC 250 rpm or more
NO 250 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)

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