Ford 2004 Focus v.1 Manuel d'utilisateur télécharger pdf (Page 189)

sells, leases, trades vehicles, or supervises a fleet of vehicles are not

permitted to intentionally remove an emission control device or prevent

it from working. Information about your vehicle’s emission system is on

the Vehicle Emission Control Information Decal located on or near the

engine. This decal identifies engine displacement and gives some tune up

specifications.

Please consult your Warranty Guide for complete emission warranty

information.

On board diagnostics (OBD-II)

Your vehicle is equipped with a computer that monitors the engine’s

emission control system. This system is commonly known as the On

Board Diagnostics System (OBD-II). This OBD-II system protects the

environment by ensuring that your vehicle continues to meet

government emission standards. The OBD-II system also assists the

service technician in properly servicing your vehicle. When the Check

Engine/Service Engine Soon light illuminates, the OBD-II system has

detected a malfunction. Temporary malfunctions may cause your Check

Engine/Service Engine Soon light to illuminate. Examples are:

1. The vehicle has run out of fuel. (The engine may misfire or run

poorly.)

2. Poor fuel quality or water in the fuel.

3. The fuel cap may not have been securely tightened.

These temporary malfunctions can be corrected by filling the fuel tank

with good quality fuel and/or properly tightening the fuel cap. After three

driving cycles without these or any other temporary malfunctions

present, the Check Engine/Service Engine Soon light should turn off.

(A driving cycle consists of a cold engine startup followed by mixed

city/highway driving.) No additional vehicle service is required.

If the Check Engine/Service Engine Soon light remains on, have your

vehicle serviced at the first available opportunity.

Readiness for Inspection/Maintenance (I/M) testing

In some localities, it may be a legal requirement to pass an I/M test of

the on-board diagnostics system. If your

indicator is on, refer to the

description in the Warning lights and chimes section of the

Instrument Cluster chapter. Your vehicle may not pass the I/M test with

the

indicator on.

If the vehicle’s powertrain system or its battery has just been serviced,

the on-board diagnostics system is reset to a “not ready for I/M test”

2004 Focus (foc)

Owners Guide (post-2002-fmt)

USA English (fus)

Maintenance and Specifications

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Ford 2004 Focus v.1 Manuel d'utilisateur Page 189

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