2000 TOYOTA CAMRY relay

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

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

CAMRY ± NEW FEATURES
172CM08
Hood Support Dampers
Utility Hooks
172CM09
High
High Beam
Indicator Light
Low
HighLow
Daytime
Running
Light
Relay No.3
Daytime Running Light
Relay No.4
'00 Model
HighLowHighLow
Daytime Running
Light Relay No.4Daytime Running
Light Resistor
'99 Model 58
Hood support dampers are used.
Two utility hooks added in the luggage room.
LIGHTING
The 4-light multi-reflector type headlights are adopted with new styling.
Along with the adoption of the 4-beam headlights, the daytime running light system has been changed
from the '99 model type that uses resistors to dim the low beams. On the 2000 model, the daytime running
light is a type that dims the right and left high beams through a series circuit.

(c) Disconnect the following connectors:
(1) Igniter connector
(2) California only:
Ignition coil connector
(3) Noise filter connector
(4) 2 ground straps from LH fender apron
(5) Connector from LH fender apron 12. DISCONNECT WIRES AND CONNECTORS
(a) Remove the engine relay box, and disconnect the 5
connectors.
(b) Connector from LH fender apron
(6) Data link connector 1
(7) 2 ground straps from RH fender apron
(d) Disconnect the MAP sensor connector.
13. DISCONNECT HEATER HOSES
14. DISCONNECT FUEL RETURN HOSE
CAUTION: Catch leaking fuel in a container.
± 5S±FE ENGINEENGINE MECHANICALEG1±86

(d) Connect the following connectors:
(1) Igniter connector
(2) California only:
Ignition coil connector
(3) Noise filter connector
(4) 2 ground straps from LH fender apron
(5) Connector from LH fender apron 24. CONNECT WIRES AND CONNECTORS
(a) Connect the 5 connectors to the relay box.
(b) Connectors from LH fender apron.
(c) Install the engine relay box. 21. CONNECT FUEL INLET HOSE
Torque: 29 N±m (300 kgf±cm, 22 ft±lbf)
22. CONNECT FUEL RETURN HOSE
23. CONNECT HEATER HOSES
± 5S±FE ENGINEENGINE MECHANICALEG1±132

2. CHECK FUEL PRESSURE
(a) Check that the battery voltages is above 12 volts.
(b) Disconnect the negative (±) terminal cable from the
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.
If there is no pressure, check the following parts:
wFusible link
wFuses (AM2 30A, EFI 15A, IGN 7.5A)
wEFI main relay
wFuel pump
wWiring connections (c) Check that there is pressure in the hose from the fuel
filter.
HINT: At this time, you will hear fuel return noise.
(e) Remove the SST.
SST 09843±18020 (d) Turn the ignition switch OFF.
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±178

2. INSPECT EFI MAIN RELAY
A. Inspect relay continuity
(a) Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
(b) Check that there is no continuity between terminals 3
and 5.
If continuity is not as specified, replace the relay.
B. Inspect relay operation
(a) Apply battery voltage across terminals 1 and 2.
(b) Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
If operation is not as specified, replace the relay.
3. REINSTALL EFI MAIN RELAY
EFI MAIN RELAY INSPECTION
7. REMOVE EFI MAIN RELAY
EFI MAIN RELAY
± 5S±FE ENGINEFE ENGINE ± MFI/SFI SYSTEMEG1±216

CIRCUIT OPENING RELAY REMOVAL AND
INSTALLATION
CIRCUIT OPENING RELAY
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±217