Page 1785 of 3115

B13335Air Inlet Hose
Air
B13336
B13337
Air Purge Port
EVAP Port
Air Drain Port
B13338
Air Purge Port
EVAP Port
Air Drain Port
Air Inlet Port
B13339
Purge Port
Air Inlet PortVacuum
EC-8
- EMISSION CONTROLEVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
1696 Author: Date:
2004 LAND CRUISER (RM1071U)
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
9. INSPECT CHARCOAL CANISTER
(a) Visually check the charcoal canister for cracks or dam-
age.
(b) Inspect the charcoal canister operation.
(1) 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.
(2) 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.
(3) 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.
Page 1786 of 3115
B13340
EVAP Port
Air Inlet PortVacuum Purge Port
- EMISSION CONTROLEVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
EC-9
1697 Author: Date:
2004 LAND CRUISER (RM1071U)
(4) 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.
(5) Remove the cap from the vent port.
10. INSPECT VSV FOR EVAP (See page SF-44)
11. INSPECT VSV FOR CANISTER CLOSED VALVE (CCV)
(See page SF-48)
12. INSPECT VSV FOR VAPOR PRESSURE SENSOR (See
page SF-46)
13. INSPECT VAPOR PRESSURE SENSOR
(See page SF-52)
14. REINSTALL CHARCOAL CANISTER ASSEMBLY
Page 1787 of 3115
EC07K-04
B16803
Cylinder Head Side
Clean Hose
B16804
Intake
Manifold
Side
Clean Hose
B03197
EC-4- EMISSION CONTROLPOSITIVE CRANKCASE VENTILATION (PCV)
SYSTEM
1692 Author: Date:
2004 LAND CRUISER (RM1071U)
POSITIVE CRANKCASE
VENTILATION (PCV) SYSTEM
INSPECTION
1. REMOVE V-BANK COVER
2. INSPECT PCV VALVE
(a) Remove the PCV valve.
(b) Install a clean hose to the PCV valve.
(c) Inspect the PCV valve operation.
(1) Blow air into the cylinder head side, and check that
air passes through easily.
CAUTION:
Do not suck air through the valve. Petroleum substances
inside the valve are harmful.
(2) Blow air into the intake manifold side, and check
that air passes through with difficulty.
If operation is not as specified, replace the PCV valve.
(d) Remove the clean hose from the PCV valve.
(e) Reinstall the PCV valve.
3. INSPECT HOSES, CONNECTIONS AND GASKETS
Visually for cracks, leaks or damage.
4. REINSTALL V-BANK COVER
Page 1788 of 3115
EC07J-08
B16805
Vapor
Pressure
Sensor
Charcoal
Canister
VSV for EVAP
TWCTWC EVAP Service Port
Purge Line
EVAP Line
Air Drain Hose Air Inlet LineVSV for Pressure
Switching ValveVSV for Canister Closed Valve
(CCV)
- EMISSION CONTROLPARTS LAYOUT AND SCHEMATIC DRAWING
EC-3
1691 Author: Date:
2004 LAND CRUISER (RM1071U)
DRAWING
Page 1789 of 3115
EC07I-09
B16650
VSV for EVAP
Charcoal Canister
Air Intake Line
Purge LineEVAP LineAir Drain HoseTWC
VSV for Pressure
Switching Valve
PCV Valve
EVAP Service port
VSV for Canister
Closed Valve (CCV) EC-2
- EMISSION CONTROLPARTS LAYOUT AND SCHEMATIC DRAWING
1690 Author: Date:
2004 LAND CRUISER (RM1071U)
PARTS LAYOUT AND SCHEMATIC DRAWING
LOCATION
Page 1790 of 3115
EC07M-02
B03194
Heated Oxygen Sensor
(Bank 2 Sensor 2)
Gasket
TWC
Gasket
Gasket
20 (200, 14)
62 (632, 46)
40 (408, 30)
Heated Oxygen Sensor
(Bank 1 Sensor 2)
Gasket
20 (200, 14)
Gasket
N´m (kgf´cm, ft´lbf) Gasket
: Specified torque
Non-reusable part
LH Front Exhaust PipeTWC
40 (408, 30)
62 (632, 46)
TWC
RH Front Exhaust Pipe
TWC
EC-10- EMISSION CONTROLTHREE-W AY CATALYTIC CONVERTER (TWC)
SYSTEM
1698 Author: Date:
2004 LAND CRUISER (RM1071U)
THREE-W AY CATALYTIC CONVERTER (TWC) SYSTEM
COMPONENTS
Page 1791 of 3115
EC07N-01
- EMISSION CONTROLTHREE-W AY CATALYTIC CONVERTER (TWC)
SYSTEMEC-1 1
1699 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION
1. CHECK 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 protector is damaged or dented to the extent that it contacts the TWC, repair or replace it.
3. INSPECT HEAT INSULATOR
(a) Check the heat insulator for damage.
(b) Check for adequate clearance between the TWC and heat insulator.
Page 1792 of 3115

EM0KQ-07
A05510
CO/HC Meter
- ENGINE MECHANICALCO/HC
EM-1
1574 Author: Date:
2004 LAND CRUISER (RM1071U)
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) The engine is at normal operating temperature.
(b) Air cleaner is installed.
(c) All pipes and hoses of the air induction system are con-
nected.
(d) All accessories are switched OFF.
(e) All vacuum lines are properly connected.
HINT:
All vacuum hoses should be properly connected.
(f) SFI system wiring connectors are fully plugged.
(g) Ignition timing is set correctly.
(h) Transmission is in neutral range.
(i) Tachometer and CO/HC meter are calibrated by hand.
2. START ENGINE
3. RACE ENGINE AT 2,500 RPM FOR APPROX. 180
SECONDS
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
HINT:
When performing the 2 mode (2,500 rpm and idle) test, follow
the measurement order prescribed by the applicable local regu-
lations.