2007 TOYOTA SIENNA shift solenoid

U151E 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 connector.
If operation cannot be done as specified, replace
the shift lever assembly.
Resistance
5. INSPECT KEY INTER LOCK SOLENOID
(a) Disconnect the solenoid connector.
(b) Connect KLS+ (4) terminal to the batteries' positive
(+) terminal and KLS (3) terminal to the battery
negative (-) terminal, and apply about 12 V between
KLS+ - KLS- terminals.
(c) Check that operation noise can be heard from the
solenoid.
If the solenoid does not operate, replace the
solenoid.
6. INSPECT SHIFT LOCK SOLENOID
(a) Disconnect the solenoid connector.
(b) Connect SSL+ (2) terminal to the batteries' positive
(+) terminal, and SLS- (1) terminal to the battery
negative (-) terminal, and apply about 12 V between
SLL+-SLS- terminals.
(c) Check that operation noise can be heard from the
solenoid.
If the solenoid does not operate, replace the
solenoid.
1 (IG) - 8 (E) Ignition switch ON10 to 14
1 (IG) - 8 (E) Ignition switch OFFBelow 1 Terminal Measuring Condition Voltage (V)
C098999E12
Terminal Measuring Condition Specified Value
8 (E) - Body ground AlwaysBelow 1
D025589E02
D030503E01

AX–26U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX(a) Waveform 1
Reference:
(b) Waveform 2
Reference:
P (E5-23) - E1 (E11-1) L-Y - BR Park position switch signalIG switch ON and shift lever P
position11 to 14 V
IG switch ON and shift lever other
then P positionBelow 1 V
N (E5-22) - E1 (E11-1) Y-R - BRNeutral position switch
signalIG switch ON and shift lever N
position11 to 14 V
IG switch ON and shift lever other
then N positionBelow 1 V
DSL (E10-11) - E1 (E11-1) Y-G - BR DSL solenoid signalVehicle speed 65 km/h (40 mph),
lock-up (ON to OFF)Pulse generation
(See waveform 2)
SR (E10-9) - E1 (E11-1) L-B - BR SR solenoid signalIG switch ON Below 1 V
3rd, 4th or 5th gear 11 to 14 V
1st or 2nd gear Below 1 V
S4 (E10-10) - E1 (E11-1) L-W - BR S4 solenoid signalIG switch ON Below 1 V
5th gear 11 to 14 V
Except 5th gear Below 1 V
SL3+ (E10-17) - SL3- (E10-16) G-B - G-R SL3 solenoid signal Engine idle speedPulse generation
(See waveform 3)
SL2+ (E10-15) - SL2- (E10-14) L-Y - L-R SL2 solenoid signal Engine idle speedPulse generation
(See waveform 4)
SL1+ (E10-19) - SL1- (E10-18) R-B - B-W SL1 solenoid signal Engine idle speedPulse generation
(See waveform 5)
NC+ (E10-34) - NC- (E10-26) R - W-G Speed sensor (NC) signalVehicle speed 30 km/h (19 mph):
(3rd gear)
Engine speed 1,400 rpmPulse generation
(See waveform 6)
NT+ (E10-35) - NT- (E10-27) W - R-W Speed sensor (NT) signal Vehicle speed 20 km/h (12mph)Pulse generation
(See waveform 7)
SLT+ (E10-13) - SLT- (E10-12) Y-R - Y-B SLT solenoid signal Engine idle speedPulse generation
(See waveform 1)
THO1 (E10-24) - E2 (E9-28) G-Y - BRATF temperature sensor
signalATF temperature: 115
C (239F)
or moreBelow 1.5 V Symbols (Terminals No.)Wiring
ColorTerminal Description Condition Specified Condition
G023426E01
Terminal SLT+ - SLT-
Tool setting 5 V/DIV, 1ms/DIV
Vehicle condition Engine idle speed
C053420E05
Terminal DSL - E1
Tool setting 10 V/DIV, 100ms/DIV
Vehicle conditionVehicle speed 65 km/h (40 mph), lock-up (ON to
OFF)

U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE UNITAX–179
AX
9. INSPECT TRANSMISSION OIL CLEANER MAGNET
(a) Remove the magnets and use them to collect any
steel chips. Examine the chips and particles in the
pan and on the magnet to determine what type of
wear has occurred in the transaxle:
Result:
Steel (magnetic):
Wear of the bearing, gear and plate
Brass (non-magnetic):
Wear of the bushing
10. DISCONNECT TRANSMISSION WIRE
(a) Remove the 7 connectors from the shift solenoid
valves.
(b) Remove the bolt, lock plate and temperature
sensor.
11. REMOVE TRANSMISSION WIRE
(a) Remove the bolt and transmission wire from the
transaxle case.
12. REMOVE VALVE BODY OIL STRAINER ASSEMBLY
(a) Remove the 3 bolts and oil strainer.
(b) Remove the O-ring from the oil strainer.
AT00103E03
C091927E02
D003547E05
C091931
C091932E01

U151E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE UNITAX–179
AX
9. INSPECT TRANSMISSION OIL CLEANER MAGNET
(a) Remove the magnets and use them to collect any
steel chips. Examine the chips and particles in the
pan and on the magnet to determine what type of
wear has occurred in the transaxle:
Result:
Steel (magnetic):
Wear of the bearing, gear and plate
Brass (non-magnetic):
Wear of the bushing
10. DISCONNECT TRANSMISSION WIRE
(a) Remove the 7 connectors from the shift solenoid
valves.
(b) Remove the bolt, lock plate and temperature
sensor.
11. REMOVE TRANSMISSION WIRE
(a) Remove the bolt and transmission wire from the
transaxle case.
12. REMOVE VALVE BODY OIL STRAINER ASSEMBLY
(a) Remove the 3 bolts and oil strainer.
(b) Remove the O-ring from the oil strainer.
AT00103E03
C091927E02
D003547E05
C091931
C091932E01

AX–16U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
(9) Disconnect the connector of the transmission
wire.
HINT:
Disconnect the connector only when performing
the D position stall test.
(10)Start the engine.
(11)Firmly depress the brake pedal, shift to the D
position, depress the accelerator pedal all the
way down and check the line pressure while the
stall test is performed.
Specified line pressure:
(12)Turn the ignition switch off.
(13)Remove the SST, install the test plug A.
(14)Remove the test plug B, install the SST and
start engine.
SST 09992-00095 (09992-00231, 09992-
00271)
(15)Connect the transmission wire connector,
depress the brake pedal firmly, shift to the R
position and check that the line pressure while
the engine is idling and during the stall test.
Specified line pressure:
(16)Remove the SST, install the test plug B.
(17)Clear the DTC.
Evaluation:
C160154E01
Condition
D position kPa (kgf / cm2, psi)
Stall test931 to 1,031 kPa
(9.5 to 10.5 kgf/cm
2, 135 to 150 psi)
Condition
R position kPa (kgf / cm
2, psi)
Idling672 to 742 kPa
(6.9 to 7.6 kgf/cm
2, 97 to 108 psi)
Stall test1,768 to 1,968 kPa
(18.0 to 20.1 kgf/cm
2, 256 to 285 psi)
Problem Possible cause
Measured values are higher than specified in all positions• Shift solenoid valve SLT defective
• Regulator valve defective
Measured values are lower than specified in all positions• Shift solenoid valve SLT defective
• Regulator valve defective
• Oil pump defective
• U/D (Underdrive) direct clutch defective
Pressure is low in the D position only• D position circuit fluid leak
• Forward clutch defective
Pressure is low in the R position only• R position circuit fluid leak
• Reverse clutch defective
• 1st and reverse brake defective

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

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

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)Valve body assemblyAX-136
Oil strainerAX-136
Direct and O/D clutch (C0)AX-181
Forward clutch (C1)AX-181
U/D clutch (C3)AX-181
2nd and brake (B1)AX-181
U/D brake (B3)AX-181
No. 1 one-way clutch (F1)AX-181
U/D one-way clutch (F2)AX-181
Torque converter clutchAX-172
Slip or shudder (Particular position: Just after engine
starts)Torque converter clutchAX-172
Slip or shudder (R position)Reverse clutch (C2)AX-181
1st and reverse brake (B2)AX-181
Slip or shudder (1st)Forward clutch (C1)AX-181
No. 1 one-way clutch (F1)AX-181
U/D one-way clutch (F2)AX-181
Slip or shudder (2nd) 2nd and O/D brake (B1)AX-181
Slip or shudder (3rd) Direct and O/D clutch (C0)AX-181
Slip or shudder (4th) 2nd and O/D brake (B1)AX-181
Slip or shudder (5th) U/D clutch (C3)AX-181
Shift position too high or too low Shift solenoid valve SLTAX-116
No engine braking (1st +- 4th: D position) U/D brake (B3)AX-181
No engine braking (1st: L (1) position)Valve body assemblyAX-136
1st and reverse brake (B2)AX-181
No engine braking (2nd: 2 position)Valve body assemblyAX-136
2nd and O/D brake (B1)AX-181
No engine braking (3rd: 3 position) U/D brake (B3)AX-181
No kick-down Valve body assemblyAX-136
Poor acceleration (All positions)Shift solenoid valve SLTAX-116
Torque converter clutchAX-172
Poor acceleration (5th)U/D clutch (C3)AX-181
U/D planetary gear unitAX-181
Engine stalls when starting off or stoppingShift solenoid valve DSLAX-60
Torque converter clutchAX-172 Symptom Suspected Area See page