check engine TOYOTA CAMRY 2000 Service Repair Manual

Check operation of VSV when battery positive
voltage is applied and released to the VSV termi±
nals.
Battery positive voltage is applied:
The air from port E is flowing out through the
air filter.
Battery positive voltage is not applied:
The air from port E is flowing out through port
G. (1) Disconnect VSV connector.
(2) Remove VSV.
(1) Measure resistance between terminals.
(2) Measure resistance between each terminal
and the body.
(1) Resistance: 33 ± 39
at 20
C (68
F)
(2) Resistance: 1 M
or higher.
Check VSV for fuel pressure control.
Replace VSV for fuel pressure control VSV.
INSPECTION PROCEDURE
G o to step
± 5S±FE ENGINECIRCUIT INSPECTIONEG1±426

(1) Remove glove compartment
(See page EG1±234).
(2) Turn ignition switch ON.
Measure voltage between terminal FPU of engine
control module connector and body ground.
Check for open and short in harness and connector between engine
control module and VSV, VSV and EFI main relay (See page IN±31). Check voltage between terminal FPU of engine control module
connector and body ground.
Proceed to next circuit inspection shown
on matrix chart (See page EG1±327).
Check and replace engine control module.Repair or replace harness or connector. Voltage: 9 ±14 V
± 5S±FE ENGINECIRCUIT INSPECTIONEG1±427

CIRCUIT DESCRIPTION
This circuit cuts air conditioning operation during vehicle acceleration in order to increase accelera±
tion performance. During acceleration with the vehicle speed at 16 mph (25 km/h) or less, engine
speed at 1,200 rpm or less and throttle valve opening angle at 60or more, the A/C magnet switch
is turned OFF for several seconds.
Air Conditioning Cut Control Circuit
Check for open and short in harness and
connector between ECM and A/C amplifier.
WIRING DIAGRAM
Repair or replace harness or connector.
DIAGNOSTIC CHART
Check and replace A/C amplifier.Check voltage terminal ACT.
Check and replace ECM.
± 5S±FE ENGINECIRCUIT INSPECTIONEG1±428

(1) Remove glove compartment.
(See page EG1±234).
(2) Turn ignition switch ON.
Measure voltage between terminal ACT of engine
control module connector and body ground
when A/C switch is turned to ON.
Check for open and short in harness and connector between engine
control module and A/C amplifier (See page IN±31).
Check voltage between terminal ACT of engine control module
connector and body ground.
Check and replace engine control module.
Repair or replace harness or connector.
INSPECTION PROCEDURE
Check and replace A/C amplifier.Voltage: 9 ±14 V
± 5S±FE ENGINECIRCUIT INSPECTIONEG1±429

DIAGNOSTIC CHART
HINT: If terminals TE1 and TE2 are connected with terminal E1, diagnostic trouble code is not
output or test mode is not activated.
Even though terminal TE1 is not connected with terminal E1, the malfunction indicator lamp
blinks.
For the above phenomenon, the likely cause is an open or short in the wire harness, or
malfunction inside the ECM.
CIRCUIT DESCRIPTION
Terminals TE1 and TE2 are located in the data link connector 1 and 2.
The data link connector 1 located in the engine compartment and the data link connector 2 located
in the cabin. When these terminals are connected with the E1 terminal, diagnostic trouble codes in
normal mode or test mode can be read from the malfunction indicator lamp on the combination meter.
Check for open and short in harness and
connector between data link connector 1, 2
and ECM.Check continuity between terminal E1 and body
ground.
TE1 TE2 Terminal Circuit
Repair or replace harness or connector.Repair or replace harness or connector. Check voltage of terminals TE1, TE2.
WIRING DIAGRAM
Check and replace ECM.Check and replace ECM.
± 5S±FE ENGINECIRCUIT INSPECTIONEG1±430

Turn ignition switch ON.
Check for open and short in harness and connector between engine
control module and data link connector 1, 2 (See page IN±31). Check continuity between terminal E1 of data link connector 1, 2
and body ground. Check voltage between terminals TE1, TE2, and E1 of data link
connector 1 and 2.
Check and replace engine control module.
Check and replace engine control module.Repair or replace harness or connector.Repair or replace harness or connector.
INSPECTION PROCEDURE
Voltage: 9 ±14 v Measure voltage between terminals TE1,
TE2 and E1 of data link connector 1 and 2.
± 5S±FE ENGINECIRCUIT INSPECTIONEG1±431

81CHASSISÐBRAKES
2) Initial Check
An initial check is carried out once every a few seconds after the ignition was turned on. The functions of each
solenoid valve and pump motor in the actuator are checked on order.
3) Self±Diagnosis
If the ABS & TRAC ECU detects a malfunction in the engine, ABS or TRAC system, it blinks the TRAC OFF
indicator light to alert the driver of the malfunction. At the same, the ABS & TRAC 1997 Avalon Repair Manual
(Pub. No. RM504U) for the diagnostic code check method, diagnostic code and diagnostic code clearance.
4) Fail±Safe
In the event of a malfunction in the engine, ABS or TRAC system, the ABS & ECU prohibits the TRAC system.
Thus, the brake and engine controls will operate in the same conditions as those without the TRAC system.

POST±WELDING REFINISH-
ING
1. Always check the welded
spots to insure they are
secure.
2. When smoothing out the
weld spots with a disc
grinder, be careful not to
grind off too much as this
would weaken the weld,
INSTALLATION
WELDING PRECAUTIONS
1. The number of welding spots
should be as follows.
Spot weld: 1.3 x No. of
manufacturer's spots.
Plug weld: More than No.
of manufacturer's plugs. PRE±WELDING MEASUREMENTS
Always take measurements
before installing underbody or
engine components to insure
correct assembly. After installation,
confirm proper fit.
WRONG
OKAYWRONG
2. Plug welding should be done
with a MIG (Metal Inert Gas)
welder. Do not gas weld or
braze panels at areas other
than specified.
Safety Glass
Body
Measurement
Diagrams
SPOT WELDING PRECAUTIONS
SPOT WELD LOCATIONS
Try to avoid welding over
previous spots.
Old
Spot
LocationsNew Spot
Locations
1. The shape of the welding
tip point has an effect on
the strength of the weld.
2. Always insure that the
seams and welding tip are
free of paint.
Tip Cutter
INTRODUCTIONIN-12

'99camry U
23
TESTING THE SYSTEM
1. Open all the windows.
2. Set the system as described above.
The doors should be locked with the
key or wireless remote control transmit-
ter. Be sure to wait until the indicator
light goes off or starts flashing.
3. Unlock any door from the inside. The
system should activate the alarm.
4. Stopping the alarm as described above.
5. Repeat this operation for the other
doors, trunk and hood. When testing on
the hood, also check that the system
is activated when the battery terminal
is disconnected and then reconnected.
If the system does not work properly,
have it checked by your Toyota dealer.
Fuel tank cap
1. To open the fuel filler door, pull the
lever up.
When refueling, turn off the engine.
CAUTION

Do not smoke, cause sparks or al-
low open flames when refueling.
The fumes are flammable.

When opening the cap, do not re-
move the cap quickly. In hot weath-
er, fuel under pressure could cause
injury by spraying out of the filler
neck if the cap is suddenly re-
moved.
2. To remove the fuel tank cap, turn
the cap slowly counterclockwise,
then pause slightly before removing
it. After removing the cap, hang it
on the cap hanger.
It is not unusual to hear a slight swoosh
when the cap is opened. When installing,
turn the cap clockwise till you hear a
click.
If the cap is not tightened securely, the
malfunction indicator lamp comes on.
Make sure the cap is tightened securely.

'99camry U
89
CAUTION
It is dangerous to continue driving
normally when the brake fluid level is
low.
If the brake fluid level is correct...
Have the warning system checked by your
Toyota dealer.
(b) Seat Belt Reminder Light and Buzz-
er
Once the ignition key is turned to ºONº or
ºSTARTº, the reminder light and buzzer
come on if the driver's seat belt is not
fastened. Unless the driver fastens the
belt, the light stays on and the buzzer
stops after about 4 to 8 seconds.
(c) Discharge Warning Light
This light warns that the battery is being
discharged.
If it comes on while you are driving, there
is a problem somewhere in the charging
system.
The engine ignition will continue to oper-
ate, however, until the battery is dis-
charged. Turn off the air conditioning,
blower, radio, etc., and drive directly to
the nearest Toyota dealer or repair shop.
NOTICE
Do not continue driving if the engine
drive belt is broken or loose.
(d) Malfunction Indicator Lamp
This lamp comes on in the following
cases.
a. The fuel tank is completely empty. (See
ºFuel gaugeº in Chapter 1±5 for instruc-
tions.)
b. The fuel tank cap is not tightened se-
curely. (See ºFuel tank capº in Chapter
1±2 for instructions.)
c. There is a problem somewhere in your
engine or automatic transmission electrical
system.
If it comes on while you are driving in
case c, have your vehicle checked/re-
paired by your Toyota dealer as soon as
possible.
(e) Low Fuel Level Warning Light
This light comes on when the fuel level
in the tank becomes nearly empty. Fill up
the tank as soon as possible.
On inclines or curves, due to the move-
ment of fuel in the tank, the low fuel level
warning light may come on earlier than
usual.(f) Low Oil Pressure Warning Light
This light warns that the engine oil pres-
sure is too low.
If it flickers or stays on while you are
driving, pull off the road to a safe place
and stop the engine immediately. Call a
Toyota dealer or qualified repair shop for
assistance.
The light may occasionally flicker when
the engine is idling or it may come on
briefly after a hard stop. There is no
cause for concern if it then goes out when
the engine is accelerated slightly.
The light may come on when the oil level
is extremely low. It is not designed to
indicate low oil level, and the oil level
must be checked using the level dipstick.
NOTICE
Do not drive the vehicle with the
warning light onÐeven for one block.
It may ruin the engine.