Emission Control – V6 Engine Page 6E1–1

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Section 6E1

Emission Control – V6 Engine

ATTENTION

Before performing any service operation or other procedure described in this Section, refer to Section 00

Warnings, Cautions and Notes for correct workshop practices with regard to safety and/or property damage.

1 General Information............................................................................................................................... 2

1.1 Euro 2 Emissions Standards.................................................................................................................................2

1.2 Vehicle Emission Control Information Label.......................................................................................................3

1.3 Emission Management ..........................................................................................................................................4

1.4 Evaporation Emission Control..............................................................................................................................5

1.5 Three-Way Catalytic Converter.............................................................................................................................6

Emission Control – V6 Engine Page 6E1–2

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1 General Information

With the following exceptions, MY 2004 VY and V2 Series Emission Control – V6 Engine information carries over from

MY 2003 VY and V2 Series vehicles:

• the vehicle has been configured to comply with the Euro 2 vehicle emission standards,

• vehicle emission control information label,

• emission management ,

• three way catalytic converter.

For information not contained within this Section, refer to Section 6E1 Emission Control – V6 Engine in the MY 2003 VY

and V2 Series Service Information.

1.1 Euro 2 Emissions Standards

The vehicle has been configured to comply with Euro 2 vehicle emissions standards by modifying the exhaust system.

Euro 2 is a European standard which aims at setting vehicle emissions targets to encourage vehicle manufacturers to

reduce harmful vehicle emissions such as carbon monoxide (CO), hydrocarbons (HC) and the various oxides of

nitrogen (NOx).

For further information on Euro 2 emissions and the revised exhaust system, refer to Section 8B Exhaust System.

NOTE

Configuration for Euro 2 vehicle emissions

standards does not apply to the following:

• domestic vehicles produced before 2004, and

• export vehicles to Brazil and Indonesia.

Australian Design Rule 79/00 implements the 'Euro 2' exhaust and evaporative emissions requirements for light vehicles

to reduce air pollution. The following tests are prescribed:

• average tailpipe emissions after a cold start,

• carbon monoxide emission at idling speed,

• emission of crankcase gases,

• evaporative em is sion s, and

• durability of pollution-control devices.

Emission Control – V6 Engine Page 6E1–3

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1.2 Vehicle Emission Control Information

Label

For domestic vehicles produced before 2004 and vehicles for export to Brazil and Indonesia, the vehicle emission control

information label carries over from MY 2003 VY and V2 Series vehicles. Refer to Section 6E1 Emission Control – V6

Engine in the MY 2003 VY and V2 Series Service Information.

For domestic vehicles produced from the start of 2004 and

vehicles for export to the Gulf States and Thailand, a new

vehicle emission control information label is introduced.

The vehicle emission control information label (1) is located

in the engine compartment on the grain free area of the

radiator shroud.

The label contains important engine tune conditions to

achieve the correct em is sion lev els, and sho uld be referred

to before making any adjus tm ents.

Refer to Figure 6E1 – 2 for a view of the new vehicle

emission control infor mat ion la bel.

Figure 6E1 – 1

Figure 6E1 – 2

Emission Control – V6 Engine Page 6E1–4

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1.3 Emission Management

NOTE

The emission management carries over from MY

2003 VY and V2 Series vehicles for the

following:

• domestic vehicles produced before 2004,

and

• export vehicles to Brazil and Indonesia.

To comply with Euro 2 emission standard, with the

exception of the new dual oxygen sensors (1) and the two

re-designed catalytic converters (2) being relocated, the

emission management carries over from MY 2003 VY and

V2 Series vehicles. Refer to Section 6E1 Emission Control

– V6 Engine in the MY 2003 VY and V2 Series Service

Information.

Each of the two oxygen sensors is located just upstream of

each catalytic converter, in the exhaust system.

For service procedures of the new heated oxygen sensors,

refer to Section 6C1 Powertrain Management – V6 Engine.

NOTE

Automatic transmission is shown, manual

transmission is similar .

Figure 6E1 – 3

Emission Control – V6 Engine Page 6E1–5

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1.4 Evaporation Emission Control

The evaporative emission control system carries over from MY 2003 VY and V2 Series vehicles. Refer to S ection 6E1

Emission Control – V6 Engine in the MY 2003 VY and V2 Series Service Information.

For information related to the EVAP canister purge valve control, refer to Section 6C1-1 General Information – V6 Engine

in the MY 2003 VY and V2 Series Service Information.

Emission Control – V6 Engine Page 6E1–6

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1.5 Three-Way Catalytic Converter

To comply with Euro 2 emission standard the three way catalytic converter configuration has been optimised with two

close-coupled catalytic converters fitted to the exhaust system. For a description of the three way catalytic converter

close-coupling, its location and service, refer to Section 8B Exhaust System.

For a view of the Euro 2 three way catalytic converter refer to Figure 6E1 – 4.

NOTE

The three way catalytic converter carries over

from MY 2003 VY and V2 Series vehicles for the

following:

• domestic vehicles produced before 2004, and

• export vehicles to Brazil and Indonesia.

The three way catalytic converter principle of operation carries over from MY 2003 VY and V2 Series vehicles, refer to

Section 6E1 Emission Control – V6 Engine in the MY 2003 VY and V2 Series Service Information.

Figure 6E1 – 4

Legend

1 Ceramic Monolith

2 Cross Sect i on of Ceram ic Monolith 3 Ceramic Mat Securing Monolith

4 Stainless Steel Shell