Toyota Sienna Service Manual: Engine coolant temperature sensor
COMPONENTS
REMOVAL
1. DRAIN ENGINE COOLANT (See page CO-6) 2. REMOVE V-BANK COVER SUB-ASSEMBLY (See page EM-28) 3. REMOVE NO. 2 AIR CLEANER INLET (See page EM- 28) 4. REMOVE NO. 1 AIR CLEANER INLET (See page EM- 28) 5. REMOVE AIR CLEANER CAP SUB-ASSEMBLY (See page ES-493) 6. REMOVE AIR CLEANER CASE SUB-ASSEMBLY (See page EM-28) 7. REMOVE ENGINE COOLANT TEMPERATURE SENSOR
(a) Remove the engine coolant temperature sensor connector.
(b) Remove the engine coolant temperature sensor.
INSPECTION
1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR
(a) Using an ohmmeter, measure the resistance between the terminals.
Standard resistance 
- If the result is as specified, do not replace the engine coolant temperature sensor
- If the result is not as specified, replace the engine coolant temperature sensor.
| NOTICE: In case of checking the engine coolant temperature sensor in water, do not allow water to go into the terminals. After checking, dry the engine coolant temperature sensor. |
INSTALLATION
1. INSTALL ENGINE COOLANT TEMPERATURE SENSOR
(a) Install the engine coolant temperature sensor.
Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf) (b) Connect the engine coolant temperature sensor connector.
2. INSTALL AIR CLEANER CASE SUB-ASSEMBLY (See page EM-59) 3. INSTALL AIR CLEANER CAP SUB-ASSEMBLY (See page ES-496) 4. INSTALL NO. 1 AIR CLEANER INLET (See page EM- 59) 5. INSTALL NO. 2 AIR CLEANER INLET (See page EM- 60) 6. ADD ENGINE COOLANT (See page CO-7) 7. INSPECT FOR ENGINE COOLANT LEAK (See page CO-1) 8. INSTALL V-BANK COVER SUB-ASSEMBLY (See page EM-63)
Crankshaft position sensor
Components
Removal
1. Remove compressor and magnetic clutch
HINT:
(See page AC-227 )
2. REMOVE CRANKSHAFT POSITION SENSOR
(a) Disconnect the crankshaft position sensor
connector.
(b) R ...
Knock sensor
COMPONENTS
REMOVAL
1. DISCHARGE FUEL SYSTEM PRESSURE
(See page FU-13)
2. REMOVE V-BANK COVER SUB-ASSEMBLY (See
page EM-28)
3. DRAIN ENGINE COOLANT (See page CO-6)
4. REMOVE WINDSHIE ...
Other materials:
Rear Occupant Classification Sensor RH Collision
Detection
DTC B1788 Rear Occupant Classification Sensor RH Collision
Detection
DESCRIPTION
DTC B1788 is output when the occupant classification ECU receives a collision
detection signal sent by
the rear occupant classification sensor RH if an accident occurs.
DTC B1788 is also output when the front s ...
VSC Warning Light Remains ON
DESCRIPTION
The skid control ECU is connected to the combination meter via CAN and
multiplex communications.
If the skid control ECU stores DTCs to shut down TRAC and VSC operation, the VSC
warning light comes
on in the combination meter.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
...
Installation
1. INSTALL REAR AXLE HUB & BEARING ASSEMBLY LH
(a) Install the hub & Bearing assembly LH with the 4
bolts.
Torque: 56 N*m (571 kgf*cm, 41 ft.*lbf)
2. INSPECT BEARING BACKLASH (See page AH-16)
3. INSPECT AXLE HUB DEVIATION (See page AH-16)
4. CONNECT SKID CONTROL SENSOR WIRE
(a) Co ...
