Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Tundra 2000-2006 Approved 04-06 techinfo.toyota.com ileaf 06toyrm 06toypdf 06rmsrc 06tundra sf1grfe sfisy prec
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SF-1
SFI (1GR-FE) - SFI SYSTEM
SFI SYSTEM SF1Y5-01
PRECAUTION
HINT:
All DTCs output from the computer will be erased when the neg-
ative (-) terminal cable is removed from the battery. Therefore,
if necessary, read the DTCs before removing the negative (-)
terminal cable from the battery.
1. BEFORE WORKING ON FUEL SYSTEM, DISCON-
NECT NEGATIVE (-) TERMINAL CABLE FROM BAT-
TERY
2. DO NOT SMOKE OR WORK NEAR FLAME WHEN
WORKING ON THE FUEL SYSTEM
3. KEEP GASOLINE AWAY FROM RUBBER OR LEATH-
ER PARTS
4. MAINTENANCE PRECAUTIONS
(a) In the event of engine misfire, these precautions should
be taken.
(1) Check that the battery terminals are properly con-
nected.
(2) After repair work, check that the ignition coil termi-
nals and all other ignition system lines are recon-
nected securely.
(3) When cleaning the engine compartment, be espe-
cially careful to protect the electrical system from
water.
(b) Precautions when handling the oxygen sensor and A/F
sensor.
(1) Do not drop the oxygen sensor or A/F sensor or hit
them against another object.
(2) Do not allow the sensor to come into contact with
water.
5. IF VEHICLE IS EQUIPPED WITH MOBILE RADIO SYS-
TEM (HAM, CB, ETC.)
If the vehicle is equipped with a mobile communication system,
refer to the precaution in the IN section.
6. AIR INDUCTION SYSTEM
(a) Separation of the engine oil dipstick, oil filler cap, PCV
hose, etc. may cause the engine to be out of tune.
(b) Disconnection, looseness or cracks in the parts of the air
induction system between the throttle body and cylinder
head will result in air suction and cause the engine to be
out of tune.
7. ELECTRONIC CONTROL SYSTEM
(a) Before removing SFI wiring connectors, terminals, etc.,
first disconnect the power by either turning the ignition
switch off or disconnecting the negative (-) terminal cable
from the battery.
SF-2
SFI (1GR-FE) - SFI SYSTEM
HINT:
Always check for diagnostic trouble codes before disconnect-
ing the negative (-) terminal cable from the battery.
(b) When installing the battery, be especially careful to cor-
rectly connect the positive (+) and negative (-) cables.
(c) Do not apply severe impact to the parts during removal or
installation. Handle all SFI parts carefully, especially the
ECM.
(d) Be careful during troubleshooting as there are numerous
transistor circuits, and even slight terminal contact can
cause further trouble.
(e) Do not open the ECM cover.
(f) When inspecting in rainy weather, take care to prevent an
intrusion of water. Also, when washing the engine
compartment, prevent water from getting on the SFI parts
and wiring connectors.
(g) Parts should be replaced as an assembly.
(h) Care should be taken when pulling out and inserting wir-
ing connectors.
(1) Release the lock and pull out the connector, pulling
on the connectors.
(2) Fully insert the connector and check that it is locked.
(i) Use SST for inspection or test of the injector or its wiring
connector.
SST 09842-30070
SST
FI2553
8. FUEL SYSTEM
Engine
(a) When disconnecting the high fuel pressure line, a large
Room Circuit
R/B amount of gasoline will spill out. Be sure to observe the
Opening
Relay following procedures:
(1) Remove the circuit opening relay.
(2) Start the engine. After the engine has stopped on
its own, turn the ignition switch off.
A23243
SF-3
SFI (1GR-FE) - SFI SYSTEM
(3) Put a container under the connecting part of the
pressure line.
(4) Slowly loosen the connection.
(5) Disconnect the connection.
(6) Plug the connection with a rubber plug.
(7) Install the circuit opening relay.
B00679
(b) Observe the following precautions when removing and
CORRECT installing the injectors.
(1) Never reuse the O-ring.
(2) When placing a new O-ring on the injector, take
O-ring care not to damage it in any way.
(3) Coat a new O-ring with spindle oil or gasoline be-
WRONG fore installing. Never use engine oil, gear oil or
brake fluid.
Delivery Pipe A23211
Delivery Pipe (c) Install the injector to the delivery pipe and lower intake
manifold as shown in the illustration.
O-ring NOTICE:
Before installing the injector, apply spindle oil or gasoline
Intake
Injector
where the delivery pipe or cylinder head contacts the O-
Manifold
ring of the injector.
Insulator
A23212
(d) Observe the following when disconnecting the fuel tube
connector:
Disconnect
(1) Check if there is any dirt in the pipe and around the
connector before disconnecting the fuel tube con-
nector. If necessary, clean the dirt away.
(2) Disconnect the fuel pipe clamp from the connector.
B17532
(3) Be sure to disconnect them by hand.
Push (4) When the connector and the pipe are stuck, push
and pull the connector. Then disconnect and pull it
out. Do not use any tools at this time.
(5) Check if there is any dirt or other foreign matter on
the seal surface of the disconnected pipe. If neces-
Pull sary, clean the dirt away.
(6) Do not damage the disconnected pipe and connec-
B11684 tor and prevent intrusion of foreign objects by cover-
ing them with a plastic bag.
SF-4
SFI (1GR-FE) - SFI SYSTEM
(e) Observe the following when connecting the fuel tube con-
nector:
(1) Check if there is any 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 a "click"
Push
sound is heard. If the connection is tight, apply a
small amount of fresh engine oil on the tip of the
B11683 pipe.
(3) After finishing the connection, pull the pipe and the
connector to ensure it is secure.
(4) Check to make sure no fuel leak is present.
If the result is not as specified, repair or replace.
Pull
B12520
(5) Install the fuel pipe clamp to the connector.
Install (6) Check to make sure no fuel leak is present.
If the result is not as specified, repair or replace.
B17533
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