TOYOTA CAMRY 1999 Service Repair Manual

SF0EC±04
B06365
Ohmmeter
+B
HT
± SFI (5S±FE)AIR±FUEL RATIO (A/F) SENSOR (California)
SF±59
1492 Author: Date:
INSPECTION
1. INSPECT HEATER RESISTANCE OF A/F SENSOR
(a) Disconnect the A/F sensor connector.
(b) Using an ohmmeter, measure the resistance between ter-
minals +B and HT.
Resistance: 0.8 ± 1.4 W at 20°C (68°F)
If the resistance is not as specified, replace the sensor.
Torque: 44 N´m (450 kgf´cm, 32 ft´lbf)
(c) Reconnect the A/F sensor connector.
2. INSPECT OPERATION OF A/F SENSOR
(See page DI±152)

SF0EH±03
B06359
Heated Oxygen Sensor
(Bank 1 Sensor 1) Connector
Heated Oxygen Sensor (Bank 1 Sensor 1)Clamp
44 (450, 32)
N´m (kgf´cm, ft´lbf) : Specified torque
SF±60± SFI (5S±FE)HEATED OXYGEN SENSOR (Bank 1 Sensor 1/Except
Calif.)
1493 Author: Date:
HEATED OXYGEN SENSOR (Bank 1 Sensor 1/Except Calif.)
COMPONENTS

SF0EI±03
B06363
Ohmmeter
HT
+B
± SFI (5S±FE)HEATED OXYGEN SENSOR (Bank 1 Sensor 1/Except
Calif.)SF±61
1494 Author: Date:
INSPECTION
1. INSPECT HEATER RESISTANCE OF HEATED OXY-
GEN SENSOR
(a) Disconnect the oxygen sensor connector.
(b) Using an ohmmeter, measure the resistance between ter-
minals +B and HT.
Resistance: 11 ± 16 W at 20°C (68°F)
If the resistance is not as specified, replace the sensor.
Torque: 44 N´m (450 kgf´cm, 32 ft´lbf)
(c) Reconnect the oxygen sensor connector.
2. INSPECT OPERATION OF HEATED OXYGEN SEN-
SOR (See page DI±66)

SF0EJ±03
Z19284
Passenger's Seat
Connector
for Seat
Heated Oxygen Sensor
Connector
(Bank 1 Sensor 2)
Grommet Clamp Heated Oxygen Sensor
(Bank 1 Sensor 2)
37 (375, 27)
44 (450, 32)
N´m (kgf´cm, ft´lbf): Specified torque SF±62
± SFI (5S±FE)HEATED OXYGEN SENSOR (Bank 1 Sensor 2)
1495 Author: Date:
HEATED OXYGEN SENSOR (Bank 1 Sensor 2)
COMPONENTS

SF0EK±03
S05303
Ohmmeter
HT +B
± SFI (5S±FE)HEATED OXYGEN SENSOR (Bank 1 Sensor 2)
SF±63
1496 Author: Date:
INSPECTION
1. INSPECT HEATER RESISTANCE OF HEATED OXY-
GEN SENSOR
(a) Disconnect the oxygen sensor connector.
(b) Using an ohmmeter, measure the resistance between ter-
minals +B and HT.
Resistance: 11 ± 16 W at 20°C (68°F)
If the resistance is not as specified, replace the sensor.
Torque: 44 N´m (450 kgf´cm, 32 ft´lbf)
(c) Reconnect the oxygen sensor connector.
2. INSPECT OPERATION OF HEATED OXYGEN SEN-
SOR (See page DI±75)

SF0EL±03
S06018
No.2 Instrument Lower Panel
Under CoverECM ConnectorECM
Cowl Side Trim
Front Door Inside Scuff Plate SF±64
± SFI (5S±FE)ENGINE CONTROL MODULE (ECM)
1497 Author: Date:
ENGINE CONTROL MODULE (ECM)
COMPONENTS

SF0EM±03
± SFI (5S±FE)ENGINE CONTROL MODULE (ECM)
SF±65
1498 Author: Date:
INSPECTION
1. REMOVE ECM
2. INSPECT ECM (See page DI±22)
3. REINSTALL ECM

SF0EN±03
S05331
S05304
Sound
Scope SF±66
± SFI (5S±FE)FUEL CUT RPM
1499 Author: Date:
FUEL CUT RPM
INSPECTION
1. WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
2. CONNECT TOYOTA HAND±HELD TESTER OR OBDII
SCAN TOOL
(a) Remove the fuse cover on the instrument panel.
(b) Connect a TOYOTA hand±held tester or OBDII scan tool
to the DLC3.
(c) Please refer to the TOYOTA hand±held tester or OBDII
scan tool operator's manual for further details.
3. INSPECT FUEL CUT RPM OPERATION
(a) Increase the engine speed to at least 2,500 rpm.
(b) Check for injector operating noise.
(c) Check that when the throttle lever is released, injector op-
eration noise stops momentarily and then resumes.
HINT:
Measure with the A/C OFF.
Fuel return speed: 1,500 rpm
4. DISCONNECT TOYOTA HAND±HELD TESTER OR
OBDII SCAN TOOL

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.