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

2GR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM

ENGINE2GR-FE EMISSION CONTROL

EMISSION CONTROL SYSTEM

PARTS LOCATION

CANISTER

ECM

EC–1

FUEL TANK CAP

HEATED OXYGEN SENSOR
(BANK 2 SENSOR 2)

AIR FUEL RATIO SENSOR

(BANK 2 SENSOR 1)

VACUUM SWITCHING VALVE

HEATED OXYGEN SENSOR
(BANK 1 SENSOR 2)

AIR FUEL RATIO SENSOR

(BANK 1 SENSOR 1)

EC

A135647E03

EC–2

to Charcoal Canister

2GR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM

SYSTEM DIAGRAM

VSV for EVAP

EC

ECM

Air Fuel Ratio Sensor
(Bank 1)

Heated Oxygen Sensor
(Bank 1)

Engine Coolant
Temperature Sensor

Air Fuel Ratio Sensor
(Bank 2)

Heated Oxygen Sensor

(Bank 2)

A113656E02

EVAP System Circuit :

2GR-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

Air Filter

Soak Timer

Fuel Cap

A128936E03

EC

EC–4

2GR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM

EC

A/F

A/F

C15
Air Fuel Ratio Sensor (Bank 1 Sensor 1)

+B

2

A1A-

4

C35
Air Fuel Ratio Sensor (Bank 2 Sensor 1)

+B

2

A2A-

4

C52
Heated Oxgen Sensor (Bank 1 Sensor 2)

+B

2

OX1B

3

HA1A

A1A+

HA2A

A2A+

E2

HT1B

1

3

1

3

4

1

(*1)

(*1)

(*1)

86
C55

93
C55

116
C55

109
C55

120
C55

119
C55

65
C55

48
C55

88
C55

ECM

HA1A

A1A+

A1A-

HA2A

A2A+

A2A-

EX1B

HT1B

OX1B

C51
Heated Oxgen Sensor (Bank 2 Sensor 2)

2

3

+B

OX2B

E2

HT2B

*1 : Shielded

4

1

(*1)

64
C55

47
C55

87
C55

EX2B

HT2B

OX2B

A135721E02

2GR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM

C6
VSV (Purge)

21

N17
Canister Pump Module

Vent Valve

VLVB

9

Canister
Pressure
Sensor

MGND

Leak Detection Pump

VGND

1

VCC

4

VOUT

3

SGND

2

MTRB

86

108
C55

34
A55

75
C55

77
C55

76
C55

42
A55

PRG

MPMP

VCPP

PPMP

EPPM

VPMP

EC–5

EC

From Battery

FL MAIN

Battery

EFI MAIN

EFI

EFI No. 3

44
A55

MREL

A135722E01

EC

EC–6

2GR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM

ON-VEHICLE INSPECTION

1. INSPECT FUEL CUT-OFF RPM

(a) Increase the engine speed to at least 3,500 rpm.
(b) Use a sound scope to check for injector operating

sounds.

(c) Check that when the throttle lever is released,

injector operating sounds stop momentarily (at
2,500 rpm) and then resume (at 1,400 rpm).

Standard

Item Specified Condition
Fuel cut off rpm 2,500 rpm
Fuel return rpm 1,400 rpm

2. CHECK AIR TIGHTNESS IN FUEL TANK 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

(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.

2

, 0.58 psi).

Fuel Tank Cap

A128092

A126204E01

3. INSPECT FUEL CUT OFF VALVE AND FUEL CHECK
VALVE

(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

2

, 0.58 psi) to the
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.

Air

2GR-FE EMISSION CONTROL – EMISSION CONTROL SYSTEM

4. CHECK AIR INLET LINE

Air Inlet Hose

(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

5. VISUALLY INSPECT HOSES, CONNECTIONS AND
GASKETS

(a) Check for cracks, leaks or damage.

HINT:
Removal or problems with the engine oil dipstick, oil
filler cap, PCV hose and other components may
cause the engine to run improperly. Disconnection,
looseness or cracks in the parts of the air induction
system between the throttle body and cylinder head

A094394

will allow air suction and cause the engine to run
improperly.
If necessary, replace any damaged parts.

EC–7

EC