2000 TOYOTA CAMRY fuel filter

CAMRY ± NEW FEATURES
150EG07 150EG06
Right Bank
Exhaust Manifold
WU-TWCLeft Bank
Exhaust Manifold
Exhaust Manifold
Cross-SectionOuter Pipe
Inner Pipe 8
3. Major Differences
The following changes have made to the 1MZ-FE engine.
Item
Details
Intake and Exhaust
System*
1
The exhaust manifolds adopt a double-wall construction consisting of
stainless steel pipes to improve the warm-up performance of the TWC.
WU-TWCs*
2 have been adopted to reduce exhaust emissions soon after
the engine is started.
Fuel System
4-hole type fuel injectors have been adopted to improve the atomization
of fuel.*
1
A quick connector is used to connect the fuel filter and the fuel hose
together to improve serviceability.
Engine Control
SystemAir-fuel ratio sensors have been adopted to improve the precision of the
air-fuel ratio feedback control.*
1
The engine immobiliser system has been integrated with the ECM.*3
*1: Only for California Specification Automatic Transaxle Model.
*
2: WU-TWC (Warm Up-Three-Way Catalytic Converter)
*
3: Applicable only to vehicle equipped with the Engine Immobiliser System.
4. Intake and Exhaust System (California Specification Automatic Transaxle Model)
Exhaust Manifold
The exhaust manifolds have been changed from the previous 3-layer type, in which ceramic wool is sand-
wiched, to the double-wall construction consisting of stainless steel pipes. As a result, the warm-up per-
formance of the TWC has been improved.
The left bank exhaust manifold integrates with a WU-TWC.

CAMRY ± NEW FEATURES
149EG07
Clamp
Fuel Hose
Fuel Filter 10
Fuel Filter
A quick connector is used to connect the fuel fil-
ter and the fuel hose together to improve seri-
viceability.
6. Engine Control System
General
The California specification automatic transaxle model has adopted an air-fuel sensor. All models are avail-
able with the Engine Immobiliser System as an optional equipment. The models other than the California
specification automatic transaxle model are basically the same as the '97 models except for the adoption
of the Engine Immobiliser System.
SFI (Sequential Multiport Fuel Injection)
The precision of the air-fuel ratio feedback control has been improved through the adoption of the air-fuel
ratio sensor. The operation of the air-fuel ratio sensor and the ECM are the same as those of the California
specification model with the 5S-FE engine and automatic transaxle. For details, see the '97 Camry New Car
Features (Pub. No. NCF134U).
Engine Immobiliser System
The engine immobiliser system has been designed to prevent the vehicle from being stolen. This system
uses an ECM that stores the ID code of the authorized ignition key. If an attempt is made to start the engine
using an unauthorized key, the ECM prohibits fuel delivery and ignition effectively disabling the engine.
For details, see page 23 in the Engine Immobiliser system section.

CAMRY ± NEW FEATURES
150EG01
Circuit Opening RelayIgnition
SwitchEFI
Main
Relay
DLC1 Pressure
RegulatorVehicle Speed
SensorPark / Neutral Position Switch*
Fuel Pump
BatteryMIL
Air
Conditioning
Amplifier
DLC3
Stop Light Switch
Electrical Load Switch
Air-Fuel Ratio Sensor Heater Relay
ECM Fuel
Filter
Pulsation
DamperVSV
(for EVAP)Vapor
Pressure
Sensor
VSV
for Vapor
Pressure
Sensor
Charcoal CanisterVCV
Intake Air Temp.
SensorIAC Valve
VSV (for EGR)
Mass Air Flow
Meter
Air-Fuel Ratio Sensor
(Bank 1, Sensor 1)Throttle
Position
Sensor
Actuator
DIS
Injector
VSV (for ACIS)
EGR
Valve
Position
Sensor
EGR
Valve EGR Gas
Temp. Sensor Camshaft
Position
Sensor
Engine Coolant
Temp. SensorWU-TWC
WU-TWC
Crankshaft
Position SensorKnock Sensors
Air-Fuel Ratio Sensor
(Bank 2, Sensor 1)Heated Oxygen Sensor
(Bank 1, Sensor 2)
13
Engine Control System Diagram
1) California Specification Automatic Transaxle Model
*: Only for the Automatic Transaxle Models

NF
NEW FEATURES Ð 5S-FNE ENGINE13
FUEL SYSTEM
1. General
The compressed gas [maximum pressure approximately 250 kg/cm2 (3600 psi, 24.8 MPa) @215C (705F)]
from the CNG fuel tank located in the rear section of the vehicle is routed via a fuel filter to the engine
compartment. The pressure of the fuel is then reduced to 8 kg/cm
2 (114 psi, 785 kPa).
A pressure regulator and injectors designed exclusively for CNG application have been adopted.
A fuel pressure sensor and a fuel temperature sensor that are used for the correction of the fuel injection
volume are located on the delivery pipe.
The fuel tank, pressure regulator, and the delivery pipe are provided with shutoff valves that shut off
the fuel when the ignition switch is turned OFF.
In addition, these valves shut off the fuel when the engine stalls, the SRS airbag is deployed, or the
pressure in the main pipe becomes abnormally low.
A fuel temperature sensor for the fuel gauge is mounted on the tank valve assembly, and a fuel pressure
sensor is mounted immediately upstream of the pressure regulator.

Fuel System Diagram 
167CN12
Discharge
Valve
Fuel
Pressure
SensorFuel Temp.
SensorFuel
Pressure
RegulatorFuel Shutoff ValveFuel TankFuel Shutoff Valve
Relief Valve
Inlet Check
Valve
Fuel Temp.
Sensor
Coupler
Tank Valve Assembly
Vent Tube Manual
Shutoff
Valve Fuel
Filter
Fuel
Pressure
Sensor
Fuel Shutoff Valve Injectors
Delivery Pipe

NEW FEATURES Ð 5S-FNE ENGINE 16
6. Fuel Filter
Mounted below the vehicle floor, the fuel filter re-
moves any moisture or oil from the fuel.
7. Fuel Pressure Regulator
The fuel pressure regulator regulates the fuel pressure by reducing the pressure of the compressed natural
gas from the fuel tank to the fuel injection pressure, which is 8 km/cm
2 (114 psi, 785 kPa).
Similar to the fuel shutoff valve for the fuel tank, a fuel shutoff valve is provided on the fuel inlet side
of the fuel pressure regulator to shut off the supply of fuel when the engine is stopped or during abnormal
conditions.
An oil separator that traps the moisture and oil in the fuel is provided on the low pressure side.
A built-in relief valve is provided to protect the parts located on the low pressure side.
While the fuel pressure is being reduced by the fuel pressure regulator, the Joule-Thomson effect associat-
ed with the expansion of the gas causes the fuel pressure regulator to be cooled excessively, exerting
unfavorable influence on the rubber parts such as diaphragms and fuel hoses.
Therefore, to raise the gas temperature, a water passage is provided in the fuel pressure regulator to
allow the engine coolant to warm the regulator.
Oil
Separator
Water Passage
Fuel
Shutoff
Valve
Relief Valve
167CN24 167CN25167CN10

NEW FEATURES Ð 5S-FNE ENGINE 22
3. Engine Control System Diagram
Fuel Tank
167CN1 1
SpeedometerFuel Gage & Warning
MIL
DLC3
Airbag Sensor Assembly
ECM
Fuel Temp.
Sensor
Fuel Shutoff
ValveFuel
Pressure
Regulator
Fuel
Shutoff
Valve
Fuel
Pressure
Sensor
Camshaft
Position
Sensor
Air Fuel
Ratio Sensor
WU-TWC
Crankshaft Position
Sensor
Heated Oxygen Sensor
TWC Engine Coolant
Temp. Sensor Fuel Pressure
Sensor
Manifold
Absolute
Pressure
Sensor EGR Valve
EGR Vacuum
Modulator
VSV
(for EGR)Intake Air
Temp. Sensor
IAC Valve
Throttle
Position
Sensor
Manual Fuel
Shutoff
Valve
Fuel Filter
Fuel Temp. Sensor
Fuel Shutoff Valve
Coupler

Maintenance Log.
. Cars & Sienna
SCHEDULED MAINTENANCE LOGS27
30,000 Miles or 24 Months
❑Replace engine air filter❑Replace engine coolant
❑Replace engine oil and oil filter❑Rotate tires
❑Replace non-platinum spark plugs (Corolla, Paseo, Tercel)1
❑Repack front wheel bearings (Paseo, Tercel)
❑Re-torque drive shaft flange bolts (Sienna)
❑Inspect the following:__
Ball joints and dust covers__
Drive shaft boots
__
Brake lines and hoses__
Exhaust pipes and mountings
__
Brake linings/drums and brake pads/discs__
Fuel tank cap gasket
__
Differential oil__
Steering gear box
__
Drive belts (non-ribbed)__
Steering linkage
__
Fuel lines and connections, fuel tank band__
Transmission fluid or oil
and fuel tank vapor vent system hoses
Additional Maintenance Items for Special Operating Conditions:*
❑Inspect nuts and bolts on body and chassis
❑Replace differential oil
❑Replace transmission fluid or oil
Date: __________________
Mileage: _______________
30,000 Miles or 24 Months
30,000 Miles or 24 Months
DEALER SERVICE VERIFICATION
1Required under the terms of the Emission Control Warranty.

Maintenance Log.
. Cars & Sienna
SCHEDULED MAINTENANCE LOGS31
60,000 Miles or 48 Months
❑Replace engine air filter❑Replace engine coolant
❑Replace engine oil and oil filter❑Rotate tires
❑Replace platinum spark plugs1
❑Replace non-platinum spark plugs (Corolla, Paseo, Tercel)1
❑Repack front wheel bearings (Paseo, Tercel)
❑Re-torque drive shaft flange bolts (Sienna)
❑Inspect the following:__
Ball joints and dust covers__
Drive shaft boots
__
Brake lines and hoses__
Engine valves
__
Brake linings/drums and brake pads/discs__
Exhaust pipes and mountings
__
Charcoal canister
2__
Fuel tank cap gasket
__
Differential oil__
Steering gear box
__
Drive belts__
Steering linkage
__
Fuel lines and connections, fuel tank band__
Transmission fluid or oil
and fuel tank vapor vent system hoses
Additional Maintenance Items for Special Operating Conditions:*❑Inspect nuts and bolts on body and chassis❑Replace differential oil❑Replace transmission fluid or oil
Date: __________________
Mileage: _______________
60,000 Miles or 48 Months
60,000 Miles or 48 Months
DEALER SERVICE VERIFICATION
1Required under the terms of the Emission Control Warranty.2Inspect at 60,000 miles or 72 months, whichever comes first, for Avalon, 6-cyl. Camry,
6-cyl. Camry Solara, Paseo, Sienna and Tercel. Required only for vehicles in California,
Massachusetts and New York.