2000 TOYOTA CAMRY fuel gauge

CAMRY
CAMRY ± OUTLINE OF NEW FEATURES 26
OUTLINE OF NEW FEATURES
The CAMRY is a high-quality family sedan with advanced technology and sporty performance. The following
changes are made for the 2000 model year.
1. Model Line-Up
The 5S-FNE CNG (Compressed Natural Gas) engine model has been added.
2. Exterior
Four new exterior colors have been added, for a total of 10 colors.
The design of the front and rear bumpers has been changed.
The bumper and the radiator grille have been made separate, and the radiator grille is chrome-plated.
The side protection molding has been increased in size. On the XLE grade model, chrome stripes have been
adopted for the side protection molding.
The 4-light multi-reflector type headlights are adopted with new styling.
The design and styling of the rear combination light has been changed.
The 16º aluminum alloy wheel and wheel cap has been added.
The styling of the 15º full wheel cover has been changed.
3. Interior
Wood-grain panels have been adopted in the interior of the XLE grade model.
CRS tether anchor brackets have been provided on the package tray trim. (except 5S-FNE engine Model)
A clock with an outside temperature gauge has been provided on the models with manual air conditioning.
4. 5S-FE Engine
The intake system from the inlet duct to the throttle body has been improved to increase torque and reduce
noise.
The direction of the rotation of the radiator cooling fan has been reversed.
A 2-way exhaust control system has been adopted on the TMMK made model.
Along with the discontinuance of the air assist system, the fuel injectors and the IAC valve have been
changed for the California specification model, in order to meet ULEV (Ultra-Low Emission Vehicle) re-
quirement.
The system for detecting evaporative emission leaks has been changed. For details, see the General 2000
Features section.
5. 5S-FNE Engine
Based on the 5S-FE gasoline engine, the 5S-FNE engine uses compressed natural gas. The fuel lines have
been designed exclusively for compressed natural gas application.
6. 1MZ-FE Engine
The system for detecting evaporative emission leaks has been changed. For details, see the General 2000
Features section.
A diagnostic trouble code (DTC) has been added for indicating a thermostat malfunction.
7. Automatic Transaxle
The overdrive switch has been changed to the momentary type. For details, see the General 2000 Features
section.
The differential gear ratio of the A140E automatic transaxle has been changed for the 5S-FNE engine mod-
el to accommodate the performance of the 5S-FNE engine.

CAMRY ± NEW FEATURES 38
2. Features of 5S-FNE Engine
Features of the 5S-FNE engine are listed below.
Item
Features
Performance
High compression ratio is used.
High lift camshaft is used.
Low back pressure muffler is used.
Fuel Economy
High compression ratio is used.
Valve spring load has been reduced.
Low-friction. TiN (titanium nitride) coated valve lifters has been adopted.
Low Emission
A fuel injection system containing gas injectors has been adopted.
Because the fuel is in the gaseous state, it does not come in contact with
the wall surface, making optimal air-fuel ratio control possible
immediately after the engine has been started.
Precision air-fuel ratio feedback control that uses an air-fuel ratio sensor
and a heated oxygen sensor has been adopted.
Two catalytic converters designed exclusively for the natural gas engine
have been adopted: the WU-TWC (Warm Up Three-Way Catalytic
Converter) and the TWC (Three-Way Catalytic Converter).
Other Features
Highly rigid pistons have been adopted to accommodate the high
compression ratio.
A CNG (Compressed Natural Gas) pressure regulator that precisely
regulates the CNG has been adopted.
A large-bore delivery pipe and fuel hose with minimal internal conduit
resistance have been adopted.
The electro magnetic fuel shutoff valve is added on the delivery pipe.
A fuel pressure sensor that corrects the fuel injection volume and a fuel
temperature sensor have been provided on the delivery pipe.
The starting performance of the engine at low temperatures has been
ensured by increasing the volume of the airflow of the IAC (Idle Air
Control).
Materials that excel in wear resistance have been adopted on the valves
and valve seats for both the intake and exhaust.
Rust-resistant spark plugs have been adopted.
Aluminum lining and carbon fiber have been adopted in the fuel tank.
For the fuel gauge, a fuel tank fuel temperature sensor and a fuel pipe fuel
pressure sensor have been adopted.

3
CAMRY ± NEW FEATURES
172CM14
Fuel
Pressure
SensorFuel Temp.
SensorFuel
Pressure
RegulatorFuel Shutoff ValveFuel Tank
Fuel Shutoff ValveRelief Valve
Inlet Check
Valve
Fuel Temp.
Sensor
Coupler
Tank Valve Assembly
Vent Tube Manual
Shutoff
Valve Oil
Separator
Fuel Shutoff Valve Injectors
Delivery Pipe Discharge
ValveFuel
Pressure
SensorFuel
Filter43
6. Fuel System
General
The compressed gas [maximum pressure approximately 250 kg / cm
2 (3600 psi, 24.8 MPa) @ 21C
(70F)] 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 pres-
sure 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 

CAMRY ± NEW FEATURES
172CM16
: Plating Area
Platinum Tip
48
Fuel Temperature and Pressure Sensor for Fuel Gage
A fuel temperature sensor that detects the temperature in the fuel tank is provided on the tank valve assem-
bly.
A fuel pressure sensor that detects the pressure in the fuel main pipe is provided immediately upstream of
the fuel pressure regulator.
The pressure and the temperature of the fuel are detected by these sensors and are input into the ECM.
These values are then converted by the ECM into the equivalent pressure at 21C to actuate the fuel gauge.
7. Ignition System
Because the spark plugs are susceptible to rust when used with natural gas, corrosion-resistant spark plugs
have been adopted. These spark plugs are the platinum-tipped spark plugs that have their metallic portion
plated.

Recommended Spark Plug 
DENSOPK20TR8-G
Plug Gap0.8 ± 1.0 mm (0.031 ± 0.39 in.)

Plug for vacuum hose, fuel hose
etc.
Battery specific gravity gauge09256±00030 Hose Plug Set
09904±00010 Expander Set
Piston ring compressorEngine tune±up tester Connecting rod aligner
Precision straight edge
EQUIPMENT
Piston ring expander Compression gauge
Magnetic finger Cylinder gauge
Torque wrenchDye penetrant CO/HC meterCaliper gauge
Spring tester
ThermometerDial indicator
Steel squareMicrometer
Valve spring
Valve spring Plastigage
Soft brushHeater
± 5S±FE ENGINEENGINE MECHANICALEG1±6

5. CHECK CYLINDER COMPRESSION PRESSURE
(a) Insert a compression gauge into the spark plug hole.
(b) Fully open the throttle.
(c) While cranking the engine, measure the compression
pressure.
HINT: Always use a fully charged battery to obtain
engine speed of 250 rpm or more.
(d) Repeat steps
(a) through
(c) for each cylinder.
NOTICE: This measurement must be done in as short a
time as possible.
Compression pressure:
1,226 kPa (12.5 kgf/cm
. 178 psi) or more
Minimum pressure:
981 kPa (10.0 kgf/cm
, 142 psi)
Difference between each cylinder:
98 kPa (1.0 kgf/cm
. 14 psi) or less
COMPRESSION CHECK
HINT: If there is lack of power, excessive oil consump±
tion or poor fuel economy, measure the compression
pressure.
1. WARM UP AND STOP ENGINE
Allow the engine to warm up to normal operating
temperature.
2. DISCONNECT DISTRIBUTOR CONNECTOR(S)
3. DISCONNECT HIGH ±TENSION CORDS FROM
SPARK PLUGS
Disconnect the high ± tension cords at the rubber
boot.
DO NOT pull on the cords.
NOTICE: Pulling on or bending the cords may damage the
conductor inside.
4. REMOVE SPARK PLUGS
Using a 16 mm plug wrench, remove the spark plug.
± 5S±FE ENGINEENGINE MECHANICALEG1±23

Reduces blow±by gas (HC)
Reduces evaporative HC
Reduces NOx
Reduces C0, HC and NOx
Regulates all engine conditions for reduction
of exhaust emissions. Positive crankcase ventilation
Fuel evaporative emission control
Exhaust gas recirculation
Three±way catalytic converter
*Multiport fuel injection/Sequential
multiport fuel injection
PREPARATION
SST (SPECIAL SERVICE TOOLS)
EMISSION CONTROL SYSTEMS
º For inspection and repair of the MFI/SFI system, refer to MFI/SFI Section.
SSM (SPECIAL SERVICE MATERIALS)
08833±00070 Adhesive 1311,
THREE BOND 1311 or equivalent
RECOMMENDED TOOLS
SYSTEM PURPOSE
09082±00050 TOYOTA Electrical Tester SetPCV
EVAP
EG R
TWC
MFI/SFI
09843±18020 Diagnosis Check Wire
EQUIPMENT
Torque wrench
Vacuum gaugeAbbreviation
Thermometer
Tachometer
Purpose
system
Heater
¿¿VTVV
TVV
± 5S±FE ENGINEEMISSION CONTROL SYSTEMSEG1±145

VSV INSPECTION (California)
1. REMOVE VSV
(a) Disconnect the following connectors and hoses:
(1) VSV for EGR
(A) connector
(2) VSV for fuel pressure control
(B) connector
(3) Vacuum hose (from EGR valve) from port E of
VSV (A)
(4) Vacuum hose (from port ªaº of EGR vacuum
modulator) from port G of VSV (A)
(5) Vacuum hose (from fuel pressure regulator) from
port E of VSV (B)
(6) Vacuum hose (from air intake chamber) from port
G of VSV (B)
(b) Remove the bolt and VSV assembly. (c) Disconnect the vacuum hose port R of the EGR
vacuum modulator and connect port R directly to the
intake manifold with another hose.
(d) Check that the vacuum gauge indicates high vacuum
at 2,500 rpm.
HINT: As a large amount of exhaust gas enters, the
engine will misfire slightly.
(e) Remove the vacuum gauge, and reconnect the
vacuum hoses to the proper locations.
8. DISCONNECT TERMINALS TE1 AND E1
Remove the SST.
SST 09843±18020
IF NO PROBLEM IS FOUND WITH THIS
INSPECTION, SYSTEM IS NORMAL; OTHERWISE
INSPECT EACH PART 7. CHECK EGR VALVE
(a) Apply vacuum directly to the EGR valve with the
engine idling.
(b) Check that the engine runs rough or dies.
(c) Reconnect the vacuum hoses to the proper locations.
± 5S±FE ENGINEEMISSION CONTROL SYSTEMSEG1±154