Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 06 20uds precaud4
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11-1
FUEL - FUEL SYSTEM
FUEL SYSTEM
110SW-01
PRECAUTION
1. PRECAUTION
(a) Before working on fuel system, disconnect negative (-) battery cable.
(b) Do not smoke or work near fire when handling the fuel system.
(c) Keep gasoline away from rubber or leather parts.
(d) Replace the fuel tank with a new one if the vehicle has been damaged, resulting in airbag deployment.
2. DISCHARGE FUEL SYSTEM PRESSURE
CAUTION:
S Do not disconnect any part of the fuel system until
you have discharged the fuel system pressure.
S Even after discharging the fuel pressure, place a
shop rag over fittings as you separate them to reduce
risk of fuel spray on yourself or in the engine compart-
ment.
Engine Room Relay Block (a) Remove the circuit opening relay from the engine room
relay block.
(b) Start the engine. After the engine stopped, turn the igni-
tion switch OFF.
HINT:
It is possible that DTC P0171 (system too lean) will be set.
(c) Check that the engine does not start.
Circuit Opening Relay (d) Remove the fuel tank cap, and let the air out of the fuel
A75349 tank.
(e) Disconnect the negative (-) battery cable.
(f) Reinstall the circuit opening relay.
3. FUEL SYSTEM
(a) When disconnecting the high fuel pressure line, a large
amount of gasoline will spill out, so observe these proce-
dures.
(1) Discharge fuel system pressure. (See step 2)
(2) Disconnect the fuel pump tube.
(See page 11-21 )
(3) Drain the fuel that remained inside the fuel pump
tube.
(4) Cover the disconnected fuel pump tubes with a vinyl
or a plastic bag to prevent damage and dirt.
(5) Place a tray under the vehicle or point of disconnec-
tion to catch any fuel that may spill.
Vinyl or Plastic Bag
B00679
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2250
11-2
FUEL - FUEL SYSTEM
CORRECT (b) Observe the following precautions when removing and
New O-ring
installing fuel injectors.
NOTICE:
Never reuse the O-ring.
Delivery Pipe (1) When installing a new O-ring to the injector, be
careful not to damage the injector.
WRONG (2) Coat the new O-ring with grease or gasoline before
Injector installing. Never use engine oil, gear oil or brake oil.
A51878
(c) Install the injector to the delivery pipe and the cylinder
Delivery Pipe head as shown in the illustration. Before installing the in-
O-ring jector, be sure to apply grease or gasoline on the place
Grommet where the delivery pipe contacts the O-ring of the injec-
Spacer tor.
Insulator
A62371
(d) Observe these precautions when disconnecting the fuel
tube connector.
(1) Disconnect the fuel pipe clamp from the connector.
(2) Check that there is no dirt or mud on the pipe and
around the connector before disconnecting them.
Clean them if necessary.
Fuel Pipe
Clamp No.1 A60083
(3) Disconnect the connector from the hose while
A pinching part A with fingers as shown in the illustra-
tion.
A
B12941
(4) When the connector and the pipe are stuck, push
and pull the connector to release and pull the con-
nector out from the pipe carefully.
(5) Inspect that there is no dirt or mud on the sealing
surface of the disconnected pipe. Clean it away if
necessary.
B12944
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2251
11-3
FUEL - FUEL SYSTEM
(6) To prevent the disconnected pipe and connector
Vinyl Bag or plastic Bag from being damaged and foreign objects from being
introduced,cover them with a vinyl or plastic bag.
A82344
(e) Observe these precautions when connecting the fuel
tube connectors (Quick Type):
(1) Check that there is no damage or foreign objects in
the connected part of the pipe.
(2) Match the axis of the connector with the axis of the
pipe, and push into the connector until the connec-
tor makes a "click" sound. If the connection is tight,
apply little amount of fresh engine oil on the tip of the
Push B16534 pipe.
(3) After having finished connection, check if the pipe
and the connector are securely connected by pull-
ing on them.
(4) Check for fuel leaks.
Pull B16535
4. CHECK FOR FUEL LEAKS
(a) Check that there are no fuel leaks after doing maintenance anywhere on the fuel system.
(See page 11-4 )
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2252
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