Toyota Sienna Service Manual: On-vehicle inspection
1. INSPECT COOLING FAN SYSTEM
(a) Put the vehicle in the following conditions
(1) The engine switch is off.
(2) The coolant temperature is less than 95°C (203°F).
(3) The battery voltage is between 9 and 14 V.
(4) The A/C switch is OFF.
(b) Clamp the 400 A probe of an ammeter over the M+ wire of each cooling fan motor.
(c) Turn the ignition switch to the ON position and wait for approximately 10 seconds. Check that the fan stops.
(d) Start the engine. Check that the fan stops with the engine idling.
HINT:
- Make sure that the radiator engine coolant temperature is less than 95°C (203°F).
- Turn the A/C switch OFF.
(e) Check that the fan operates when the A/C switch is turned ON (MAX COOL and the magnetic clutch is operating).
Standard current
HINT:
The coolant temperature is less than 95°C (203°F).
(f) Check that the fan operates when the engine coolant temperature sensor connector is disconnected.
Standard current
(g) After the engine is warmed up, check that the fan operates as shown in the illustration.
HINT:
- The coolant temperature at which the fan starts operating is approximately 95°C (203°F).
- This system can also be checked using the intelligent tester
- Select the following menu items: Powertrain / Engine / Data List / Initial Engine Coolant Temp.
Precaution
NOTICE:
When the ignition switch is turned off and the engine
temperature is high, the cooling fans may operate for
approximately 3 minutes.
After turning the ignition switch of ...
Coolant
Replacement
1. REMOVE NO. 1 ENGINE UNDER COVER (See page
EM-26)
2. REMOVE V-BANK COVER SUB-ASSEMBLY (See
page EM-28)
3. DRAIN ENGINE COOLANT
(a) Loosen the radiator drain cock plug.
HINT:
...
Other materials:
No. 1 Ultrasonic sensor
COMPONENTS
REMOVAL
1. REMOVE FRONT FENDER LINER LH
2. REMOVE FRONT FENDER LINER RH
3. REMOVE FRONT BUMPER COVER
4. REMOVE REAR BUMPER COVER (2)
5. REMOVE NO. 1 ULTRASONIC SENSOR RETAINER
Remove the No. 1 ultrasonic sensor retainer as
shown in the illustration
6. REMOVE ...
Removal
1. REMOVE ROOF HEADLINING ASSEMBLY
2. REMOVE SLIDING ROOF SIDE GARNISH LH
Disengage the 3 claws.
Disengage the rear clip.
Disengage the front clip.
Remove the slide garnish by pulling it rearward.
3. REMOVE SLIDING ROOF SIDE GARNISH RH
HINT:
Use the same procedures described abov ...
Freeze frame data
1. DESCRIPTION
(a) The ECM records vehicle and driving condition
information as freeze frame data the moment a DTC
is stored. When troubleshooting, freeze frame data
can be helpful in determining whether the vehicle
was running or stopped, whether the engine was
warmed up or not, whether the a ...