TOYOTA CAMRY 2000 Service Repair Manual

SF078±03
± SFI (1MZ±FE)SFI SYSTEM
SF±1
1500 Author: Date:
SFI SYSTEM
PRECAUTION
1. BEFORE WORKING ON FUEL SYSTEM,
DISCONNECT NEGATIVE (±) TERMINAL CABLE
FROM 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 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 the oxygen sensor.
(1) Do not allow the oxygen sensor to drop or hit
against an object.
(2) Do not allow the sensor to come into contact with
water.
5. IF VEHICLE IS EQUIPPED WITH A MOBILE RADIO
SYSTEM (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 run out of tune.
(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 tune.
7. 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.

FI2553
SST
S04600
Fuel
Pump
Connector
S05039
Plug
SF±2
± SFI (1MZ±FE)SFI SYSTEM
1501 Author: Date:
(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±30070
8. FUEL SYSTEM
(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) Put a container under the connection.
(4) Slowly loosen the connection.
(5) Disconnect the connection.
(6) Plug the connection with a rubber plug.

S05054
New Gasket
FI1654
Fulcrum Length
30 cm
SST
FI6372 FI6372
New O±Ring
Grommet
InjectorCORRECT
WRONG
± SFI (1MZ±FE)SFI SYSTEM
SF±3
1502 Author: Date:
(b) When connecting the union bolt on the high pressure pipe
union, observe these procedures:
(1) Always use 2 new gaskets.
(2) Tighten the union bolt by hand.
(3) Tighten the union bolt to the specified torque.
Torque: 32.5 N´m (330 kgf´cm, 24 ft´lbf)
(c) When connecting the flare nut on the high pressure pipe
union, observe these procedures:
(1) Apply a light coat of engine oil to the flare nut, and
tighten the flare nut by hand.
(2) Using SST, tighten the flare nut to specified torque.
SST 09631±22020
NOTICE:
Do not rotate the fuel pipe, when tightening the flare nut.
Torque: 28 N´m (285 kgf´cm, 21 ft´lbf) for using SST
HINT:
Use a torque wrench with a fulcrum length of 30 cm (11.81 in.).
(d) Observe these precautions when removing and installing
the injectors.
(1) Never reuse the O±ring.
(2) When placing a new O±ring on the injector, take
care not to damage it in any way.
(3) Coat a new O±ring with spindle oil or gasoline be-
fore installing±never use engine, gear or brake oil.

B00630
O±Ring
Grommet
Spacer InsulatorDelivery Pipe California A/T
Except California A/TO±Ring
O±Ring
Grommet
Spacer InsulatorDelivery Pipe
O±Ring
S04583
S05040
Vinyl Bag SF±4
± SFI (1MZ±FE)SFI SYSTEM
1503 Author: Date:
(e) Install the injector to the delivery pipe and intake manifold,
as shown in the illustration.
Before installing the injector, must apply spindle oil or gas-
oline on the place where a delivery pipe or an intake man-
ifold touches an O±ring of the injector.
(f) Observe these precautions when disconnecting the fuel
tube connector (quick type).
(1) Check if there is any dirt like mud on the pipe and
around the connector before disconnecting them
and clean the dirt away.
(2) Be sure to disconnect with hands.
(3) 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.
(4) Inspect if there is any dirt or the likes on the seal sur-
face of the disconnected pipe and clean it away.
(5) Prevent the disconnected pipe and connector from
damaging and mixing foreign objects by covering
them with a vinyl bag.

S05382
Retainer
S05050
Click Sound
S05358
TOYOTA
Hand±Held Tester
± SFI (1MZ±FE)SFI SYSTEM
SF±5
1504 Author: Date:
(g) Observe these precautions when connecting the fuel
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.
(4) Match the axis of the connector with axis of the pipe,
and push in the connector until the retainer makes
a ºclickº 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.
(6) Check if there is any fuel leakage.
(h) Observe 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 EPDM protector on the outside
of the nylon tube.
(4) Must not close the piping with the nylon tube by
bending it.
(i) Check that there are no fuel leaks after doing mainte-
nance anywhere on the fuel system.
(1) Connect a TOYOTA hand±held tester to the DLC3.
(2) Turn the ignition switch ON and push the TOYOTA
hand±held tester main switch ON.
NOTICE:
Do not start the engine.
(3) Select the active test mode on the TOYOTA hand±
held tester.
(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.

S05358
TOYOTA
Hand Held TesterSF079±04
S05353
S05359
Fuel Tube Connector
SF±6
± SFI (1MZ±FE)FUEL PUMP
1505 Author: Date:
FUEL PUMP
ON±VEHICLE INSPECTION
1. CHECK FUEL PUMP OPERATION
(a) Connect a TOYOTA hand±held tester to the DLC3.
(b) Turn the ignition switch ON and push the TOYOTA hand±
held tester main switch ON.
NOTICE:
Do not start the engine.
(c) Select the ACTIVE TEST mode on the TOYOTA hand±
held tester.
(d) Please refer to the TOYOTA hand±held tester operator's
manual for further details.
(e) If you have no TOYOTA hand±held tester, connect the
positive (+) and negative (±) leads from the battery to the
fuel pump connector. (See step 7)
(f) Check that there is pressure in the fuel inlet hose from the
fuel filter.
HINT:
If there is fuel pressure, you will hear the sound of fuel flowing.
If there is no pressure, check these parts:
Fusible link
Fuses
EFI main relay
Fuel pump
ECM
Wiring connections
(g) Turn the ignition switch OFF.
(h) Disconnect the TOYOTA hand±held tester from the
DLC3.
2. CHECK FUEL PRESSURE
(a) Check the battery positive voltage is above 12 V.
(b) Disconnect the negative (±) terminal cable from the bat-
tery.
(c) Purchase the new No.1 fuel pipe and take out the fuel
tube connector from its pipe.
Part No. 23801±20041

S06086
Fuel Hose
Clamp
S05352
S05364
SST
SST
Retainer
No.1 Fuel
Fuel Tube
Connector (Hose)
Pipe
SST
(Hose)SST
± SFI (1MZ±FE)FUEL PUMP
SF±7
1506 Author: Date:
(d) Remove the fuel hose clamp.
(e) Disconnect the No.1 fuel pipe (fuel tube connector) from
the fuel filter outlet.
CAUTION:

Perform disconnecting operations of the fuel tube
connector (quick type) after observing the precau-
tions. (See page SF±1)

As there is retained pressure in the fuel pipe line, pre-
vent it from splashing inside the engine compart-
ment.
(f) Install SST (pressure gauge) as shown in the illustration
by using SST and fuel tube connector.
SST 09268±41047, 09268±41250, 09268±45012
(g) Wipe off any splattered gasoline.
(h) Reconnect the negative (±) terminal cable to the battery.
(i) Connect the TOYOTA hand held tester to the DLC3.
(See step 1. check fuel pump operation (a) to (e))
(j) Measure the fuel pressure.
Fuel pressure:
301 ± 347 kPa (3.1 ± 3.5 kgf/cm
2, 44 ± 50 psi)
If pressure is high, replace the fuel pressure regulator.
If pressure is low, check these parts:
Fuel hoses and connections
Fuel pump
Fuel filter
Fuel pressure regulator
(k) Disconnect the TOYOTA hand±held tester from the
DLC3.
(l) Start the engine.
(m) Measure the fuel pressure at idle.
Fuel pressure:
301 ± 347 kPa (3.1 ± 3.5 kgf/cm
2, 44 ± 50 psi)
(n) Stop the engine.
(o) Check that the fuel pressure remains as specified for 5
minutes after the engine has stopped.
Fuel pressure:
147 kPa (1.5 kgf/cm
2, 21 psi) or more
If pressure is not as specified, check the fuel pump, pressure
regulator and/or injectors.

S05351
S06086
Fuel Hose
Clamp
S04508
Ohmmeter
4 5
S04509
4 5
Battery SF±8
± SFI (1MZ±FE)FUEL PUMP
1507 Author: Date:
(p) After checking fuel pressure, disconnect the negative (±)
terminal cable from the battery and carefully remove the
SST and fuel tube connector to prevent gasoline from
splashing.
SST 09268±41047, 09268±41250, 09268±45012
(q) Reconnect the No.1 fuel pipe (fuel tube connector).
CAUTION:
Perform connecting operations of the fuel tube connector
(quick type) after observing the precautions.
(See page SF±1)
(r) Surely install the fuel hose clamp to the fuel filter with
ºclickº sound.
(s) After installing the clamp, check that the clamp is fixed by
pulling up the clamp.
(t) Reconnect the negative (±) terminal cable to the battery.
(u) Check for fuel leaks.
3. REMOVE REAR SEAT CUSHION
4. REMOVE FLOOR SERVICE HOLE COVER
5. DISCONNECT FUEL PUMP & SENDER GAUGE
CONNECTOR
6. INSPECT FUEL PUMP RESISTANCE
Using an ohmmeter, measure the resistance between terminals
4 and 5.
Resistance: 0.2 ± 3.0 W at 20°C (68°F)
If the resistance is not as specified, replace the fuel pump.
7. INSPECT FUEL PUMP OPERATION
Connect the positive (+) lead from the battery to terminal 4 of
the connector, and the negative (±) lead to terminal 5. Check
that the fuel pump operates.
NOTICE:

These tests must be done quickly (within 10 seconds)
to prevent the coil burning out.

Keep the fuel pump as far away from the battery as
possible.

Always do the switching at the battery side.

± SFI (1MZ±FE)FUEL PUMP
SF±9
1508 Author: Date:
If operation is not as specified, replace the fuel pump or lead
wire.
8. RECONNECT FUEL PUMP & SENDER GAUGE
CONNECTOR
9. REINSTALL FLOOR SERVICE HOLE COVER
10. REINSTALL REAR SEAT CUSHION

SF07A±02
B06401
Type A
Rear Seat Cushion

Gasket
4 (40, 35 in.´lbf)
Floor Service Hole Cover
Fuel Pump and Sender
Gauge Connector
No.1 Fuel Tank Protector
Fuel Tank Vent Tube Set Plate
Fuel Hose
Fuel Pump Connector
Fuel Pump
Fuel Pump Filter
Rubber Cushion
N´m (kgf´cm, ft´lbf)

Non±reusable part: Specified torque

Clip
Fuel Pump Assembly
x 8
SF±10
± SFI (1MZ±FE)FUEL PUMP
1509 Author: Date:
COMPONENTS