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SF-1
SFI - SFI SYSTEM
SFI SYSTEM SF0Z7-03
PRECAUTION
1. BEFORE WORKING ON THE FUEL SYSTEM , DIS-
CONNECT THE NEGATIVE (- ) TERMINAL CABLE
FROM THE BATTERY
HINT:
Any diagnostic trouble code retained by the computer will be
erased when the negative (-) terminal cable is removed from
the battery. Therefore, if necessary, read the diagnosis before
removing the negative (-) terminal cable from the battery.
2. DO NOT SMOKE OR WORK NEAR AN OPEN FLAME
WHEN WORKING ON THE FUEL SYSTEM
3. KEEP GASOLINE AWAY FROM RUBBER OR
LEATHER PARTS
4. MAINTENANCE PRECAUTIONS
(a) In event of engine misfire, these precautions should be
taken.
(1) Check proper connection to battery terminals, etc.
(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 oxygen sensor.
(1) Do not allow oxygen sensor to drop or hit against an
object.
(2) Do not allow the sensor to come into contact with
water.
If vehicle is Equipped with Mobile Radio System (HAM, CB,
etc.)
If the vehicle is equipped with a mobile communication system,
refer to the precaution in the IN section.
5. AIR INDUCTION SYSTEM
(a) Separation of the engine oil dipstick, oil filler cap, PCV
hose, etc. may cause the engine to run out of turn.
(b) Disconnection, looseness or cracks in the parts of the air
induction system between the throttle body and cylinder
head will allow air suction and cause the engine to run out
of turn.
6. ELECTRONIC CONTROL SYSTEM
(a) Before removing SFI wiring connectors, terminals, etc.,
first disconnect the power by either turning the ignition
switch to LOCK or disconnecting the negative (-) terminal
cable from the battery.
HINT:
Always check the diagnostic trouble code before disconnecting
the negative (-) terminal cable from the battery.
2002 ECHO (RM884U)
Author : Date : 711
SF-2
SFI - SFI SYSTEM
(b) When installing the battery, be especially careful not to in-
correctly connect the positive (+) and negative (-) cables.
(c) Do not permit parts to receive a severe impact during re-
moval or installation. Handle all SFI parts carefully, espe-
cially the ECM.
(d) Be careful during troubleshooting as there are numerous
transistor circuit, and even slight terminal contact can
cause further troubles.
(e) Do not open the ECM cover.
(f) When inspecting during rainy weather, take care to pre-
vent entry 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 09842-30080
SST
B00417
Fuel Pump 7. FUEL SYSTEM
Connector (a) When disconnecting the high fuel pressure line, a large
amount of gasoline will spill out, so observe these proce-
dures.
(1) Disconnect the fuel pump connector.
(2) Start the engine. After the engine has stopped on
its own, turn the ignition switch to LOCK.
(3) Disconnect the fuel tube (See page SF-1 1).
B09205 (4) Drain the fuel remained inside the fuel tube.
(5) Prevent the disconnected fuel tube from damaging
and mixing foreign objects by covering them with a
vinyl bag.
Vinyl Bag
B00679
2002 ECHO (RM884U)
Author : Date : 712
SF-3
SFI - SFI SYSTEM
(6) Put a container under the connection.
B00347
New O-ring CORRECT (b) Observe these precautions when removing and installing
the injector.
(1) Never reuse the O-ring.
(2) When placing a new O-ring on the injector, take
Delivery Pipe care not to damage it in any way.
Injector
(3) Coat a new O-ring with spindle oil or gasoline be-
WRONG fore installing never use engine, gear or brake oil.
B00061
Delivery Pipe (c) Install the injector to the delivery pipe and cylinder head,
as shown in the illustration. Before in installing the injec-
O-ring
tor, must apply spindle oil or gasoline on the place where
a delivery pipe or a cylinder head touches on O-ring or
grommet of the injector.
Grommet
B09599
(d) Observe these precautions when disconnecting the fuel
O-Ring Retainer Pipe
delivery pipe. The structure of the metallic connector is
shown as left.
(1) Remove the fuel pipe clamp.
Nylon Tube Housig
B06584
(2) Get the metallic connector of the fuel tube assem-
bly, pull it out towards the rear and hold it as it is.
(3) Assemble SST to the connection as shown.
SST 09268-21010
B09217
2002 ECHO (RM884U)
Author : Date : 713
SF-4
SFI - SFI SYSTEM
(4) Turn SST, align the retainers inside the connector
with SST chamfered parts and incert SST into the
connector.
Retainer
(at 4 places)
B09218
(5) Hold SST as it at step 4, push the connector to-
wards SST to put the retainers on SST champfered
parts.
(6) Slide SST and the connector together towards the
fuel tube assembly.
B09219
(e) Observe these precautions when disconnecting the fuel
tube connector (quick type).
(1) Remove the fuel pipe clamp.
(2) Check if there is any dirt like mud on the pipe and
around the connector before disconnecting them
and clean the dirt away.
B09220
(3) Be sure to disconnect with hands.
(4) When the connector and the pipe are stuck, pinch
the retainer between the hands, push and pull the
connector to free to disconnect and pull it out. Do
not use any tool at this time.
(5) Inspect if there is any dirt or the likes on the seal sur-
face of the disconnected pipe and clean it away.
B09221
(6) Prevent the disconnected pipe and connector from
Vinyl Bag damaging and mixing foreign objects by covering
them with a vinyl bag.
B09222
2002 ECHO (RM884U)
Author : Date : 714
SF-5
SFI - SFI SYSTEM
(f) Observe these precautions when connecting the fuel
Retainer tube connector (quick type).
(1) Do not reuse the retainer removed from the pipe.
(2) Must use hands without using tools when to remove
the retainer from the pipe.
(3) Check if there is any damage or foreign objects on
the connected part of the pipe.
S05382
(4) Match the axis of the connector with axis of the pipe,
Click Sound and push in the connector until retainer makes a
"click" sound. In case that the connections is tight,
apply little amount of new engine oil on the tip of the
pipe.
(5) After having finished the connection, check if the
pipe and the connector are securely connected by
pulling them.
B09223
(6) Install the fuel pipe clamp.
(7) Check if there is any fuel leakage.
(g) Observer these precautions when handling nylon tube.
(1) Pay attention not to turn the connected part of the
nylon tube and the quick connector with force when
connecting them.
(2) Pay attention not to kink the nylon tube.
(3) Do not remove the nylon tube.
B09220 (4) Must not close the piping with the nylon tube by
bending it.
TOYOTA Hand-Held Tester
(h) Check that there are no fuel leaks after doing mainte-
nance anywhere on the fuel system.
(1) Connect the TOYOTA hand- held tester to the
DLC3.
(2) Turn the ignition switch ON and push TOYOTA
hand-held tester main switch ON.
(3) Select the active test mode on the TOYOTA hand-
held tester.
DLC3 D08002 (4) Please refer to the TOYOTA hand-held tester oper-
ator's manual for further details.
(5) If you have no TOYOTA hand-held tester, connect
the positive (+) and negative (-) leads from the bat-
tery to the fuel pump connector.
(See page SF-6 )
(6) Check that there are no leaks from any part of the
fuel system.
(7) Turn the ignition switch to LOCK.
(8) Disconnect the TOYOTA hand-held tester from the
DLC3.
2002 ECHO (RM884U)
Author : Date : 715
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