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 switch to the LOCK position.
(c) Check that the shift lever cannot be moved to any
position other than P.
(d) Turn the ignition switch to the on position, depress
the brake pedal and check that the shift lever can be
moved to another position. If operation can not be
done as specified, inspect the shift lock control unit.
2. CHECK SHIFT LOCK RELEASE BUTTON
OPERATION
(a) Using a small screwdriver, remove the shift lock
release cover.
(b) When operating the shift lever with the shift lock
release button pressed, check that the lever can be
moved to any position other than P.
If operation can not be done as specified, check the
shift lever assembly installation condition.
3. CHECK KEY INTERLOCK OPERATION
(a) Turn the ignition switch to the ON position.
(b) Depress the brake pedal and move the shift lever to
any position other than P.
(c) Check that the ignition key cannot be turned to the
LOCK position.
(d) Move the shift lever to the P position, turn the
ignition key to the LOCK position and check that the
ignition key can be removed.
If operation cannot be done as specified, inspect the
shift lock control unit.
4. INSPECT SHIFT LOCK CONTROL UNIT ASSEMBLY
(a) Measure the voltage according to the value(s) in the
table below.
HINT:
Do not disconnect the shift lock control unit
assembly connector.
Voltage
C098999E11
Terminal Measuring Condition Voltage (V)
6 (ACC) - 8 (E) Ignition switch ACC10 to 14
6 (ACC) - 8 (E) Ignition switch OFFBelow 1
7 (STP) - 8 (E) Depress brake pedal10 to 14
7 (STP) - 8 (E) Release brake pedalBelow 1
12 (KLS+) - 8 (E)1. Ignition switch ACC and shift lever P position
2. Ignition switch ACC and shift lever except P position
3. Ignition switch ACC and shift lever except P position (After approx. 1 second)Below 1
7.5 to 11
6 to 9

U151F AUTOMATIC TRANSAXLE – SHIFT LOCK SYSTEMAX–143
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(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

U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEMAX–25
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TERMINALS OF ECM
1. ECM
HINT:
Each ECM terminal's standard voltage is shown in the
table below.
In the table, first follow the information under "Condition".
Look under "Symbols (Terminal No.)" for the terminals to
inspected. The standard voltage between the terminals
is shown under "Specific Condition".
Use the illustration above as a reference for the ECM
terminals.
G036662E24
Symbols (Terminals No.)Wiring
ColorTerminal Description Condition Specified Condition
L (E5-9) - E1 (E11-1) L - BRL shift position switch
signalIG switch ON and shift lever L
position11 to 14 V
IG switch ON and shift lever other
than L positionBelow 1 V
2 (E5-10) - E1 (E11-1) Y-G - BR2 shift position switch
signalIG switch ON and shift lever 2
and L position11 to 14 V
IG switch ON and shift lever other
than 2 and L positionBelow 1 V
D (E5-21) - E1 (E11-1) L-W - BRD shift position switch
signalIG switch ON and shift lever D
and 4 position11 to 14 V
IG switch ON and shift lever other
than D and 4 positionBelow 1 V
R (E5-11) - E1 (E11-1) R-B - BRR shift position switch
signalIG switch ON and shift lever R
position11 to 14 V
IG switch ON and shift lever other
than R positionBelow 1 V
SPD (E5-8) - E1 (E11-1) V-W - BR Speed signal Vehicle speed 20 km/h (12 mph)Pulse generation
(See waveform 8)
STP (E4-15) - E1 (E11-1) G-W - BR Stop light switch signalBrake pedal is depressed 7.5 to 14 V
Brake pedal is released Below 1.5 V
3 (E5-19) - E1 (E11-1) G - BR3 shift position switch
signalIG switch ON and shift lever 3
position11 to 14 V
IG switch ON and shift lever other
than 3 positionBelow 1 V
4 (E5-20) - E1 (E11-1) B-W - BR4 shift position switch
signalIG switch ON and shift lever 4
position11 to 14 V
IG switch ON and shift lever other
than 4 positionBelow 1 V
NSW (STAR) (E10-8) - E1 (E11-
1)B-Y - BR Park neutral switch signalIG switch ON and shift lever P
and N positionBelow 1 V
IG switch ON and shift lever other
than P and N position11 to 14 V

AX–26U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
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(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)

U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEMAX–27
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(c) Waveform 3
Reference:
(d) Waveform 4
Reference:
(e) Waveform 5
Reference:
(f) Waveform 6
Reference:
(g) Waveform 7
Reference:
G023426E01
Terminal SL3+ - SL3-
Tool setting 5 V/DIV, 1ms/DIV
Vehicle condition Engine idle speed
G023426E01
Terminal SL2+ - SL2-
Tool setting 5 V/DIV, 1ms/DIV
Vehicle condition Engine idle speed
G023426E07
Terminal SL1+ - SL1-
Tool setting 5 V/DIV, 1ms/DIV
Vehicle condition Engine idle speed
C093866E09
Terminal NC+ - NC-
Tool setting 1 V/DIV, 1ms/DIV
Vehicle conditionVehicle speed 30 km/h (19 mph): (3rd gear)
Engine speed 1.400 rpm
C053419E13
Terminal NT+ - NT-
Tool setting 5 V/DIV, 0.5ms/DIV
Vehicle condition Vehicle speed 20 km/h (12 mph)

AX–28U151F AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE SYSTEM
AX
(h) Waveform 8
Reference:
C053421E09
Terminal SPD - E1
Tool setting 5 V/DIV, 20ms/DIV
Vehicle condition Vehicle speed 20 km/h (12 mph)

AX–146U151F AUTOMATIC TRANSAXLE – SHIFT LEVER
AX
REMOVAL
1. DISCONNECT BATTERY NEGATIVE TERMINAL
2. REMOVE FRONT DOOR SCUFF PLATE LH
HINT:
(See page IP-6)
3. REMOVE FRONT DOOR SCUFF PLATE RH
HINT:
(See page IP-6)
4. REMOVE COWL SIDE TRIM BOARD LH
HINT:
(See page IP-6)
5. REMOVE COWL SIDE TRIM BOARD RH
HINT:
(See page IP-6)
6. REMOVE INSTRUMENT PANEL FINISH PANEL SUB-
ASSEMBLY LOWER LH
HINT:
(See page IP-6)
7. REMOVE GLOVE COMPARTMENT DOOR STOPPER
SUB-ASSEMBLY
HINT:
(See page IP-7)
8. REMOVE GLOVE COMPARTMENT DOOR
ASSEMBLY
HINT:
(See page IP-7)
9. REMOVE FLOOR CARPET COVER CENTER LH
HINT:
(See page IP-8)
10. REMOVE FLOOR CARPET COVER CENTER RH
HINT:
(See page IP-8)
11. REMOVE INSTRUMENT CLUSTER FINISH PANEL
CENTER NO.1
HINT:
(See page IP-8)
12. REMOVE INSTRUMENT CLUSTER FINISH PANEL
CENTER NO.2
HINT:
(See page IP-8)

U151F AUTOMATIC TRANSAXLE – SHIFT LEVERAX–147
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13. REMOVE SHIFT LEVER KNOB SUB-ASSEMBLY
(a) Remove the floor shift lever knob sub-assembly.
14. REMOVE POSITION INDICATOR HOUSING
ASSEMBLY
(a) Using a screwdriver, remove the position indicator
housing assembly from the instrument cluster finish
panel assembly center.
15. REMOVE INSTRUMENT CLUSTER FINISH PANEL
ASSEMBLY CENTER
HINT:
(See page IP-9)
16. REMOVE SHIFT LEVER CAP
(a) Using a small screwdriver, remove the shift lever
cap from the position indicator housing assembly.
17. REMOVE INSTRUMENT CLUSTER FINISH PANEL
SUB-ASSEMBLY LOWER CENTER
HINT:
(See page IP-9)
18. DISCONNECT TRANSMISSION CONTROL CABLE
ASSEMBLY
(a) Using a screwdriver, disconnect the cable end from
the shift lever assembly.
(b) Using a small screwdriver, disconnect the outer of
transmission control cable assembly from the shift
lever assembly.
C086302E01
C086303E01
C086304
C086305E04

AX–148U151F AUTOMATIC TRANSAXLE – SHIFT LEVER
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19. REMOVE SHIFT LEVER ASSEMBLY
(a) Disconnect the 2 connectors.
(b) Remove the 4 bolts and disconnect the shift lever
assembly from the vehicle.
DISASSEMBLY
1. REMOVE INDICATOR LIGHT WIRE SUB-ASSEMBLY
(a) Remove the indicator light wire sub assembly from
the position indicator light guide.
2. REMOVE POSITION INDICATOR LIGHT BULB
(a) Remove the shift position indicator light bulb from
the indicator light wire sub-assembly
3. REMOVE POSITION INDICATOR SLIDE COVER
(a) Remove the shift lever slide cover guide from the
shift lever assembly.
(b) Remove the position indicator slide cover from the
shift lever assembly.
C086306E01
C086307E01
C086308E01
C086309E01

U151F AUTOMATIC TRANSAXLE – SHIFT LEVERAX–149
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4. REMOVE POSITION INDICATOR SLIDE COVER
(a) Remove the position indicator slide cover No.2 from
the position indicator slide cover.
C086310E01