Page 2545 of 4592

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)
Page 2546 of 4592
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)
Page 2547 of 4592
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.
Page 2548 of 4592
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
Page 2549 of 4592
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:
Page 2550 of 4592
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.
Page 2551 of 4592
EC023±04
B06396
Except M/T and california A/TCalifornia A/T (Type B)
M/T
TWC
Front Exhaust Pipe
N´m (kgf´cm, ft´lbf) : Specified torque
Non±reusable part
TWC
Front Exhaust Pipe
Bracket
Gasket
Stay
62 (630, 46)
56 (570, 41)
TWC
Front Exhaust Pipe
(California A/T Type A) Gasket Gasket
62 (630, 46)
33 (330, 24)33 (330, 24)
Bracket
TWC
Front Exhaust Pipe
21 (210, 15)
EC±18± EMISSION CONTROL (1MZ±FE)THREE±WAY CATALYTIC CONVERTER (TWC)
SYSTEM
1433 Author: Date:
COMPONENTS
Page 2552 of 4592

EM07X±05
S04994
CO/HC Meter
± ENGINE MECHANICAL (5S±FE)CO/HC
EM±1
1173 Author: Date:
CO/HC
INSPECTION
HINT:
This check is used only to determine whether or not the idle CO/
HC complies with regulations.
1. INITIAL CONDITIONS
(a) Engine at normal operating temperature
(b) Air cleaner installed
(c) All pipes and hoses of air induction system connected
(d) All accessories switched OFF
(e) All vacuum lines properly connected
HINT:
All vacuum hoses for EGR system, etc. should be properly con-
nected.
(f) SFI system wiring connectors fully plugged
(g) Ignition timing checked correctly
(h) Transmission in neutral position
(i) Tachometer and CO/HC meter calibrated by hand
2. START ENGINE
3. RACE ENGINE AT 2,500 RPM FOR APPROX. 180 SE-
CONDS
4. INSERT CO/HC METER TESTING PROBE AT LEAST
40 cm (1.3 ft) INTO TAILPIPE DURING IDLING
5. IMMEDIATELY CHECK CO/HC CONCENTRATION AT
IDLE AND/OR 2,500 RPM
Complete the measuring within 3 minutes.
HINT:
When performing the 2 mode (2,500 rpm and idle) test, follow
the measurement order prescribed by the applicable local regu-
lations.