sensor TOYOTA CAMRY 2000 Service User Guide

3
CAMRY ± NEW FEATURES
FUEL SHUTOFF VALVE for
FUEL TANK CIRCUIT OPENING RELAY
FUEL TEMP. SENSOR for
FUEL TANKTHCNG 1
FUEL TEMP. SENSOR for
DELIVERY PIPETHCNG 2
FUEL PRESSURE SENSOR for
FUEL PIPEPCNG 1
FUEL PRESSURE SENSOR for
DELIVERY PIPEPCNG 2
DATA LINK CONNECTOR 1TE1FUEL CUT-OFF CONTROL
FC
ECM
FUEL SHUTOFF VALVE
for FUEL PRESSURE
REGULATOR
FUEL SHUTOFF VALVE for
DELIVERY PIPE
DATA LINK CONNECTOR 3
EFI MAIN RELAY BATTERY+B
VCNG 2
VCNG 3
SIL
+B1
BATT
51

CAMRY ± NEW FEATURES
167CN11
Intake Air
Temp. SensorSpeedometerFuel Gage & Warning
MIL
DLC3
Airbag Sensor Assembly
ECM
VSV
(for EGR)
EGR Vacuum
ModulatorIAC Valve
Throttle
Position
Sensor
Fuel Temp.
Sensor
Fuel Shutoff
ValveFuel
Pressure
Regulator
Oil
SeparatorFuel
Shutoff
Valve
Fuel
Pressure
Sensor
EGR Valve
Crankshaft Position
Sensor Manifold
Absolute
Pressure
SensorFuel Pressure
Sensor
Engine Coolant
Temp. Sensor
Camshaft
Position
Sensor
Air Fuel
Ratio Sensor
WU-TWC
Heated Oxygen Sensor
TWCManual Fuel
Shutoff
ValveFuel Filter
Fuel TankFuel Temp. Sensor
Fuel Shutoff Valve
Coupler 52
Engine Control System Diagram

3
CAMRY ± NEW FEATURES
172CM18
172CM19
ON
OFF1 sec 1 sec
1 sec 1 sec
ON
OFF1 sec 1 sec
2 sec 2 sec 2 sec53
Injector Control
1) General
Fuel clearing control and injector unsticking control have been added to the injector control.
2) Fuel Clearing Control
While the vehicle is being driven at speeds higher than 60 km / h (37.5 mph), and the ignition switch is
turned OFF after the ECM has detected a low temperature condition of less than 25C (77F) of intake
air temperature, the ECM closes the fuel shutoff valve for the delivery pipe. However, instead of immedi-
ately stopping the engine, the fuel clearing control allows the engine to stop on its own after the fuel in
the delivery pipe has been used up. If the engine is running even after 2 seconds or more have elapsed
after the ignition switch has been turned OFF, the EFI relay is turned OFF to stop the engine.
3) Injector Unsticking Control
When the ignition switch is turned ON after executing the fuel clearing control, the injector unsticking
control activates two cylinders at a time to unstick the valve that is frozen stuck onto the valve seat. At
low temperature conditions. At this time, the shutoff valve remains closed so that the injectors will not
inject fuel.
Gas Leak Judgment
If the ECM has detected a gas leak through the signals received from the pressure sensors, the ECM closes
the shutoff valves and flashes the low fuel level warning light.
These functions are canceled by resetting the ECM (by disconnecting the negative [-] terminal of the bat-
tery), which enables the engine to start.
(The ECM should be reset only after performing a gas leak check and making sure that the leak has been
eliminated.)
NOTE: The low fuel level warning light also flashes when the fuel level is extremely low. The flashing
patterns shown below differentiates a gas leak from a low fuel level.
Flashing Pattern
Gas Leak
Fuel Low Level

3
CAMRY ± NEW FEATURES
159BE05 172CM10
LCD
CE and LE Grade Model XLE Grade Model
167CN19
Front Airbag
Sensors
Airbag
Sensor
Assembly
Airbags
Seat Belt
Preten-
sioners
Fuel Cutoff
Signal
ECM Fuel Shutoff Valves59
AIR CONDITIONING
The air inlet mode selector of heater control panel has been changed from the lever type to the push button
type on the CE and LE grade models.
When the air outlet mode is set to the DEF or FOOT/DEF mode, the air inlet mode also changes to the
FRESH mode, has been also added on the CE and LE grade model.
A fully automatic controlled type air conditioning is used on the XLE grade model.
The basic construction and operation are the same as in the CAMRY SOLARA.
A defroster-linked air conditioning start up control has been continuing to use since the previous models
with air conditioning.

Heater Control Panel 
SRS AIRBAG
When the SRS airbag is deployed, a signal to shut off the supply of fuel is output by the airbag sensor assembly
to the ECM for the 5S-FNE engine model.

System Diagram 

(09248±05011) Valve Lifter Press
(09248±05021) Valve Lifter Stopper
09226±10010 Crankshaft Front & Rear Bearing
Replacer
09616±30011 Steering Worm Bearing Adjusting
Screw Wrench09224±74010 Engine Balancer Backlash
Adjusting Tool
09330±00021 Companion Flange Holding Tool09248±55020 Valve Clearance Adjust Tool Set
RECOMMENDED TOOLS
09816±30010 Oil Pressure Switch Socket09278±54012 Drive Shaft Holding Tool09249±63010 Torque Wrench Adaptor
09843±18020 Diagnosis Check Wire
09090±04010 Engine Sling Device
09200±00010 Engine Adjust KitCamshaft timing pulley
For suspension engineCrankshaft pulley
Oil pump pulley
Knock sensor
± 5S±FE ENGINEENGINE MECHANICALEG1±5

Troubleshooting
If the CO/HC concentration does not comply with
regulations, perform troubleshooting in the order
given below.
(a) Check oxygen sensor operation.
(See page EG1±231)
(b) See the table below for possible causes, then inspect
and correct the applicable causes if necessary.
1. Faulty ignitions:
wIncorrect timing
wFouled, shorted or improperly gapped plugs
wOpen or crossed high±tension cords
wCracked distributor cap
2. Incorrect valve clearance
3. Leaky EGR valve
4. Leaky intake and exhaust valves
5. Leaky cylinder
1. Restricted air filter
2. Faulty MFI/SFI systems
wFaulty pressure regulator
wClogged fuel return line
wDefective engine coolant temp. sensor
wDefective intake air temp. sensor
wFaulty ECM
wFaulty injector
wFaulty throttle position sensor
wMAP sensor 1. Vacuum leaks:
wPCV hose
wEGR valve
wIntake manifold
wThrottle body
w!AC valve
wBrake booster line
2. Lean mixture causing misfire
Rough idle
(Black smoke from exhaust) Rough idle
(Fluctuating HC reading) Rough idleProblems
Causes
Normal
High High High
HighLow
± 5S±FE ENGINEENGINE MECHANICALEG1±22

5. REMOVE AIR CLEANER CAP, RESONATOR AND
AIR CLEANER HOSE
(a) Disconnect the intake air temperature sensor connec±
tor.
(b) California only:
Disconnect the air hose from the air cleaner hose.
(c) Loosen the air cleaner hose clamp bolt.
(d) Disconnect the 4 air cleaner cap clips.
(e) Disconnect the air cleaner hose from the throttle
body, and remove the air cleaner cap together with
the resonator and air cleaner hose.
6. REMOVE GENERATOR (See page CH±10)
7. REMOVE DISTRIBUTOR
(See page IG±13 end 32)
CYLINDER HEAD REMOVAL
(See Components for Removal and Installation)
1. DISCONNECT NEGATIVE (±) TERMINAL CABLE
FROM BATTERY
CAUTION: Work must be started after 90 seconds from
the time the ignition switch is turned to the ªLOCKº
position and the negative (±) terminal cable is discon±
nected from the battery.
2. DRAIN ENGINE COOLANT
3. A/T:
DISCONNECT THROTTLE CABLE FROM
THROTTLE BODY
4. DISCONNECT ACCELERATOR CABLE FROM
THROTTLE BODY
8. DISCONNECT FRONT EXHAUST PIPE
(a) Loosen the 2 bolts, and disconnect the bracket.
(b) Using a 14 mm deep socket wrench, remove the 3
nuts holding the front exhaust pipe to the WU±TWC.
(c) Disconnect the front exhaust pipe and gaskets.
± 5S±FE ENGINEENGINE MECHANICALEG1±42

10. SEPARATE EXHAUST MANIFOLD AND WARM UP
THREE±WAY CATALYTIC CONVERTER
Remove the following parts:
(1) 3 bolts
(2) Manifold lower heat insulator
(3) 8 bolts
(4) 2 WU±TWC heat insulators 9. REMOVE EXHAUST MANIFOLD AND WARM UP
THREE±WAY CATALYTIC CONVERTER ASSEMBLY
(a) Disconnect the main oxygen and sub oxygen sensor
connectors.
(b) Remove the 4 bolts and upper heat insulator.
(e) Remove the 6 nuts, the exhaust manifold and WU ±
TWC assembly. (c) Remove the bolt, nut and No. 1 manifold stay.
(d) Remove the bolt, nut and manifold stay.
± 5S±FE ENGINEENGINE MECHANICALEG1±43

11. DISCONNECT OIL PRESSURE SWITCH
CONNECTOR
12. DISCONNECT ENGINE WIRE (FOR OXYGEN
SENSORS) FROM ENGINE HANGER
13. REMOVE WATER OUTLET
(a) Disconnect the following connectors:
(1) Engine coolant temperature sender gauge con±
nector
(2) Engine coolant temperature sensor connector
(b) Disconnect the following hoses:
(1) Upper radiator hose
(2) Water bypass pipe hose
(3) Heater water hose
(4) IAC water bypass hose
(5) 2 TVV (for EVAP) vacuum hoses
14. REMOVE WATER BYPASS PIPE
(a) Disconnect the following hoses:
(1) IAC water bypass hose
(2) Heater water hose
(3) w/ Oil Cooler:
2 oil cooler water bypass hoses (5) 3 bolts and 2 nuts
(6) Exhaust manifold
(7) Gasket
(8) Retainer
(9) Cushion
(10) WU±TWC
(c) Remove the 2 bolts, water outlet and gasket.
± 5S±FE ENGINEENGINE MECHANICALEG1±44

(f) Disconnect the following hoses from the throttle
body, and remove the throttle body.
(1) Water bypass hose from water outlet
(2) Water bypass hose from water bypass pipe
(3) California:
Air hose from cylinder head
Except California:
Air hose from air tube (c) Disconnect the following hoses from the throttle
body.
(1) PCV hose
(2) 2 vacuum hoses from EGR vacuum modulator
(3) Vacuum hose from TVV (for EVAP) (b) Remove the 2 bolts, 2 nuts, water bypass pipe and
gasket.
(c) Remove the O±ring from the water bypass hose.
15. REMOVE THROTTLE BODY
(a) Disconnect the throttle position sensor connector.
(b) Disconnect the IAC valve connector.
(d) Type A:
Remove the 4 bolts.
(e) Type B:
Remove the 2 bolts and 2 nuts.
± 5S±FE ENGINEENGINE MECHANICALEG1±45