Toyota Camry 2007-2009 Service Manual - 2AZ-FE_Emission_Control

2AZ-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM

ENGINE2AZ-FE EMISSION CONTROL

EMISSION CONTROL SYSTEM

PARTS LOCATION

VENTILATION VALVE

VACUUM SWITCHING VALVE

EC–1

HEATED OXYGEN SENSOR

AIR FUEL RATIO SENSOR

EC

CANISTER

FUEL TANK CAP

A135646E03

EC–2

For PZEV :

2AZ-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM

SYSTEM DIAGRAM

Air Cleaner

ECM

EC

Intake Manifold

EVAP VSV

Service Port

Canister

Soak Timer

Air Filter

Fuel Cap

Pump Module

Roll-over Valve

Cut-off Valve

Fuel Tank

A128935E01

Except PZEV :

2AZ-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM

Air Cleaner

ECM

EC–3

Intake Manifold

EVAP VSV

Service Port

Canister

Pump Module

Roll-over Valve

Cut-off Valve

Fuel Tank

Soak Timer

Air Filter

Fuel Cap

EC

A128936E01

EC–4

2AZ-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM

N17
Canister Pump Module

ECM

EC

MGND MTRB

6

Leak Detection Pump

Canister
Pressure
Sensor

Vent Valve

VLVB

9

C6 VSV (Purge)

12

1

VCC

4

VOUT

3

SGND

2

VGND

8

C22
Heated Oxgen Sensor

34
A24

70
C24

71
C24

94
C24

42
A24

49
C24

VCPP

PPMP

EPPM

VPMP

PRG

EFI-MAIN

From Battery

EFI No. 3

EFI

C15
Air Fuel Ratio Sensor

2

1

+B

HA1A

A1A-

A1A+

87
C24

64
C24

47
C24

113
C24

112
C24

109
C24

44
A24

EX1B

OX1B

HT1B

A1A-

A1A+

HA1A

MREL

A135723E01

+B

2

HT1B

1

4

3

E2

OX1B

4

3

2AZ-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM

ON-VEHICLE INSPECTION

1. VISUALLY INSPECT HOSE, CONNECTIONS AND
GASKETS

(a) Check that there are no cracks, leaks or damage.

HINT:

• Detachment or other problems with the engine oil
dipstick, filler cap, PCV hose and other
components may cause the engine to run

B000412

2. INSPECT FUEL CUT RPM

(a) Start and warm up the engine.
(b) Open the throttle valve and keep the engine speed

(c) Use a sound scope to check for injector operating
(d) Check that when the accelerator pedal is released,

improperly.

• Disconnection, looseness or cracks in the parts
of the air induction system between the throttle
body and cylinder head will allow air suction and
cause an engine failure or engine malfunctions.

If the result is not as specified, replace the parts as
necessary.

at 3,000 rpm.
sounds.
injector operating sounds stop momentarily (at

2,500 rpm) and then resume (at 1400 rpm).

Standard

Item Specified condition

Fuel cut off rpm 2,500 rpm
Fuel return rpm 1,400 rpm

EC–5

EC

A128092

If the result is not specified, check the injectors,
wiring and ECM.

3. INSPECT LINE AND CONNECTORS

(a) Visually check for loose connections, sharp bends

or damage.

4. CHECK AIR TIGHTNESS IN FUEL T ANK AND FILLER
PIPE

(a) Disconnect the vent line hose from the fuel tank.
(b) Connect the pressure gauge to the fuel tank.
(c) Apply pressure to the fuel tank to create an internal

pressure of 4 kPa (41 gf/cm

2

, 0.58 psi).

(d) Check that the internal pressure of the fuel tank is

maintained for 1 minute.

(e) Check the connected portions of each hose and

pipe.

(f) Check the installed parts on the fuel tank.

If any malfunctions, damage or other problems are
found, replace the fuel tank and filler pipe.

(g) Reconnect the vent line hose to the fuel tank.

EC–6

Fuel Tank Cap

2AZ-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM

5. REMOVE FUEL TANK ASSEMBLY

(a) Disconnect the vent line hose from the fuel tank.
(b) Connect the pressure gauge to the fuel tank.
(c) Fill the fuel tank with fuel.

(d) Apply pressure of 4 kPa (41 gf/cm

vent port of the fuel tank.
HINT:
Check the amount of fuel in the fuel tank. When the
fuel tank is full, the float valve of the fill check valve
is closed and no air can pass through.

(e) Remove the fuel tank cap, and check that the

pressure drops.
If the pressure does not drop, replace the fuel tank
assembly.

(f) Reconnect the vent line hose to the fuel tank.

A126204E01

2

, 0.58 psi) to the

EC

Air

Air Inlet Hose

6. REMOVE AIR INLET LINE

(a) Disconnect the air inlet line hose from the charcoal

canister.

(b) Check that air can flow freely into the air inlet line.

If air cannot flow freely into the air inlet line, repair or
replace it.

(c) Reconnect the air inlet line hose to the charcoal

canister.

A128093E02

ENGINE2AZ-FE EMISSION CONTROL

CANISTER

COMPONENTS

for PZEV:

2AZ-FE EMISSION CONTROL – CANISTER

EC–7

39 (398, 29)

EC

CHARCOAL CANISTER ASSEMBLY

N*m (kgf*cm, ft.*lbf)

: Specified torque

A135649E03

EC–8

except PZEV:

2AZ-FE EMISSION CONTROL – CANISTER

EC

CHARCOAL CANISTER ASSEMBLY

39 (398, 29)

N*m (kgf*cm, ft.*lbf)

: Specified torque

A135648E06