TOYOTA CAMRY 1999 Service Repair Manual

B06546
Pressure
Gauge
Pressure
B06547
Fuel Tank Cap
B01250
Air
Disconnect
EVAP Line Hose
B01251
Air
Disconnect
Cap
Disconnect
EVAP Line Hose
Purge Line Hose
Purge Port
EC±8
± EMISSION CONTROL (1MZ±FE)EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
1423 Author: Date:
(2) Add the pressure (13.5 ± 15.5 in.Aq) from the EVAP
service port.
Pressure:
2 minutes after the pressure is added, the gauge
should be over 7.7 ± 8.8 in.Aq.
HINT:
If you can't add pressure, you can conclude that the hose con-
necting the VSV
canister
fuel tank has slipped off or the
VSV is open.
(3) Check if the pressure decreases when the fuel tank
cap is removed while adding pressure.
HINT:
If the pressure does not decrease when the filler cap is re-
moved, then you can conclude that the hose connecting the
service port to the fuel tank is blocked, etc.
(k) Disconnect the pressure gauge from the EVAP service
port on the purge line.
5. CHECK AIRTIGHTNESS IN FUEL TANK AND FILLER
PIPE
(a) Disconnect the EVAP line hose from the charcoal canister
side and then pressurize and make the internal pressure
in the fuel tank 4 kPa (41 gf/cm
2, 0.58 psi).
(b) Check that the internal pressure of the fuel tank can be
hold for 1 minute.
(c) Check the connected portions of each hose and pipe.
(d) Check the installed parts on the fuel tank.
If there is no abnormality, replace the fuel tank and filler pipe.
(e) Reconnect the EVAP line hose to the charcoal canister.
6. INSPECT FUEL CUTOFF VALVE AND FILL CHECK
VA LV E
(a) Disconnect the purge line hose and EVAP line hose from
the charcoal canister.
(b) Plug the cap to the air drain hose.
(c) Pressurize 4 kPa (41 gf/cm
2, 0.58 psi) to the purge port
and check that there is ventilation through the EVAP line
hose.

B01252
AirDisconnect
Air Inlet Line Hose
B01253
Pinch
Push
AA
Pinch
B01148
B01149
Air
Purge Port
Vent Port
Air Drain Port
Cap
EVAP
Port
± EMISSION CONTROL (1MZ±FE)EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
EC±9
1424 Author: Date:
HINT:
In the condition that the fuel fuel is full, as the float value of the
fill check valve is closed and has no ventilation, it is necessary
to check the fuel amount (volume).
(d) Check if there is any struck in the vent line hose and EVAP
line hose.
If there is no stuck in hoses, replace the fuel cutoff valve and fill
check valve.
(e) Reconnect the purge line hose and EVAP line hose to the
charcoal canister.
7. CHECK AIR INLET LINE
(a) Disconnect the air inlet line hose from the charcoal canis-
ter.
(b) Check that there is ventilation in the air inlet line.
(c) Reconnect the air inlet line hose to the charcoal canister.
8. REMOVE CHARCOAL CANISTER ASSEMBLY
(a) Disconnect the VSV connector.
(b) Disconnect the vapor pressure sensor connector.
(c) Disconnect the purge line hose, EVAP line hose and air
inlet line hose from the charcoal canister.
(d) Disconnect the vent line hose from the charcoal canister.
(1) Push the connector deep inside.
(2) Pinch portion A.
(3) Pull out the connector.
(e) Remove the 2 charcoal canister mounting bolts.
(f) Remove the vapor pressure sensor mounting bolt.
(g) Remove the charcoal canister assembly.
9. INSPECT CHARCOAL CANISTER
(a) Visually check the charcoal canister for cracks or dam-
age.
(b) Inspect the charcoal canister operation.
(1) Plug the vent port with a cap.
(2) While holding the purge port closed, blow air (1.76
kPa, 18 gf/cm
2, 0.26 psi) into the EVAP port and
check that air flows from the air drain port.

B01150
Air
Purge Port
EVAP
Port Air Drain PortAir Inlet Port
B01151Vacuum
Purge PortAir Inlet Port
B01152Vacuum
Purge Port
EVAP
Port
Air Inlet Port
EC±10
± EMISSION CONTROL (1MZ±FE)EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
1425 Author: Date:
(3) While holding the purge port and the air drain port
closed, blow air (1.76 kPa, 18 gf/cm
2, 0.26 psi) into
the EVAP port and check that air does not flow from
the air inlet port.
(4) Apply vacuum (3.43 kPa, 25.7 mmHg, 1.01 in.Hg)
to the purge port, check that the vacuum does not
decrease when the air inlet port is closed, and
check that the vacuum decreases when the air inlet
port is released.
(5) While holding the air inlet port closed, apply vacuum
(3.43 kPa, 25.7 mmHg, 1.01 in.Hg) to the EVAP port
and check that air flows into the purge port.
If operation is not as specified, replace the charcoal canister.
(6) Remove the cap from the vent port.
10. INSPECT VSV FOR EVAP (See page SF±58)
11. INSPECT VSV FOR VAPOR PRESSURE SENSOR
(See page SF±62)
12. INSPECT VAPOR PRESSURE SENSOR
(See page SF±65)
13. REINSTALL CHARCOAL CANISTER ASSEMBLY

EC0AW±01
S05477
DisconnectOhmmeter
E2 VC
B01480
E2(±)
VC(+)
± EMISSION CONTROL (1MZ±FE)EXHAUST GAS RECIRCULATION (EGR) SYSTEM
EC±11
1426 Author: Date:
EXHAUST GAS RECIRCULATION
(EGR) SYSTEM
INSPECTION
1. INSPECT EGR SYSTEM (See page DI±358)
2. INSPECT EGR VALVE POSITION SENSOR
(a) Inspect the resistance of the EGR valve position sensor.
(1) Disconnect the EGR valve position sensor connec-
tor.
(2) Using an ohmmeter, measure the resistance be-
tween the terminals VC and E2.
Resistance: 1.5 ± 4.3 kW
If the resistance is not as specified, replace the EGR valve posi-
tion sensor.
(3) Reconnect the EGR valve position sensor connec-
tor.
(b) Inspect the power output voltage of the EGR valve posi-
tion sensor.
(1) Disconnect the vacuum hose from the EGR valve.
(2) Turn the ignition switch ON.
(3) Connect a voltmeter to terminals VC and E2 of the
ECM, and measure the power source voltage.
Voltage: 4.5 ± 5.5 V

B01482
Disconnect
E2(±) EGLS(+)
S05452
S05455
(1)
(2)
(3)
EC±12
± EMISSION CONTROL (1MZ±FE)EXHAUST GAS RECIRCULATION (EGR) SYSTEM
1427 Author: Date:
(4) Connect a voltmeter to terminals EGLS and E2 of
the ECM, and measure the power outlet voltage un-
der the following conditions:

Using a MITYVAC (Hand±Held Vacuum
Pump), apply a vacuum (17.3 kPa, 130
mmHg, 5.1 in.Hg) to the EGR valve.
Voltage: 3.2 ± 5.1 V

Release the vacuum from the EGR valve.
Voltage: 0.4 ± 1.6 V
If the voltage is not as specified, replace the EGR valve position
sensor.
(5) Reconnect the vacuum hose to the EGR valve.
3. REMOVE EGR POSITION SENSOR
Remove the 3 nuts and EGR valve position sensor from the
EGR valve.
Torque: 2 N´m (20 kgf´cm, 17 in.´lbf)
4. REINSTALL EGR POSITION SENSOR
Installation is the reverse order of removal.
5. REMOVE EGR VALVE
(a) Remove the EGR pipe.

Remove the 4 nuts, EGR pipe and 2 gaskets.
HINT:
At the time of installation, please refer to the following items.
Install 2 new gaskets.
Torque: 12 N´m (120 kgf´cm, 9 ft´lbf)
(b) Disconnect the EGR gas temperature sensor connector
and clamp.
(c) Remove the EGR valve.
(1) Disconnect the EVAP hose from the EGR valve
hook.
(2) Disconnect the vacuum hose from the EGR valve.
(3) Disconnect the EGR valve position sensor connec-
tor.
(d) Remove the 3 nuts, EGR valve and gasket.
HINT:
At the time of installation, please refer to the following items.
Install a new gasket.
Torque: 12 N´m (120 kgf´cm, 9 ft´lbf)
(e) Remove the EGR gas temperature sensor.
Torque: 20 N´m (200 kgf´cm, 14 ft´lbf)

S05454
S05478
Z Port
S Port
S05476
(kPa, mmHg, in.Hg)
Vacuum
(3 Times)10 sec.
TimePumping
± EMISSION CONTROL (1MZ±FE)EXHAUST GAS RECIRCULATION (EGR) SYSTEM
EC±13
1428 Author: Date:
6. INSPECT EGR VALVE
Check for sticking and heavy carbon deposits.
If a problem is found, replace the EGR valve.
7. REINSTALL EGR VALVE
Installation is the reverse order of removal.
8. REMOVE VCV
9. INSPECT VCV
(a) Connect the MITYVAC (Hand±Held Vacuum Pump) to
port S of the VCV.
(b) Plug port Z completely with fingers.
(c) Perform pumping 3 times and apply vacuum as shown in
the illustration.
(d) Stop the performing pumping and check the indicated val-
ue of the MITYVAC after about 10 seconds.
Standard value:
15 ± 24 kPa (112 ± 180 mmHg, 4.4 ± 7.1 in.Hg)
If the indicated value is not as specified, replace the VCV.
10. REINSTALL VCV
11. INSPECT VSV FOR EGR (See page SF±56)

EC020±04
EC±14± EMISSION CONTROL (1MZ±FE)WARM UP THREE±WAY CATALYTIC CONVERTER
(WU±TWC) SYSTEM (California A/T)
1429 Author: Date:
WARM UP THREE±WAY CATALYTIC CONVERTER
(WU±TWC) SYSTEM (California A/T)
ON±VEHICLE INSPECTION
1. INSPECT EXHAUST PIPE ASSEMBLY
(a) Check the connections for looseness or damage.
(b) Check the clamps for weakness, cracks or damage.
2. INSPECT WU±TWC
Check for dents or damage.
If any part of the protector is damaged or dented to the extent that it contacts the WU±TWC, repair or replace
it.
3. INSPECT WU±TWC HEAT INSULATOR
(a) Check the heat insulator for damage.
(b) Check for adequate clearance between the catalytic converter and heat insulator.

EC021±04
B06395
N´m (kgf´cm, ft´lbf) : Specified torque

Non±reusable partBracket

Gasket
Stay
62 (630, 46)
33 (330, 24)
56 (570, 41)
WU±TWCFront Exhaust Pipe
(Type A)
Gasket


62 (630, 46)
33 (330, 24)
WU±TWC for Bank 1


21 (210, 15)
Front Exhaust Pipe
WU±TWC
Type B
± EMISSION CONTROL (1MZ±FE)WARM UP THREE±WAY CATALYTIC CONVERTER
(WU±TWC) SYSTEM (California A/T)EC±15
1430 Author: Date:
COMPONENTS

B06478
WU±TWC for Bank 2
LH Exhaust Manifold
(with WU±TWC)
LH Exhaust Manifold
Heat InsulatorA/F Sensor Connector
A/F Sensor
LH Exhaust Manifold Stay
Gasket
Gasket
49 (500, 63)
62 (630, 46)
44 (450, 32)
x 6


N´m (kgf´cm, ft´lbf) : Specified torque

Non±reusable part
EC±16± EMISSION CONTROL (1MZ±FE)WARM UP THREE±WAY CATALYTIC CONVERTER
(WU±TWC) SYSTEM (California A/T)
1431 Author: Date:

EC022±04
± EMISSION CONTROL (1MZ±FE)THREE±WAY CATALYTIC CONVERTER (TWC)
SYSTEMEC±17
1432 Author: Date:
THREE±WAY CATALYTIC CONVERTER (TWC) SYSTEM
ON±VEHICLE INSPECTION
1. INSPECT EXHAUST PIPE ASSEMBLY
(a) Check the connections for looseness or damage.
(b) Check the clamps for weakness, cracks or damage.
2. INSPECT TWC
Check for dents or damage.
If any part of the protector is damaged or dented to the extent that it contacts the TWC, repair or replace
it.
3. INSPECT TWC HEAT INSULATOR
(a) Check the heat insulator for damage.
(b) Check for adequate clearance between the catalytic converter and heat insulator.