Ford 2005 Thunderbird v.1 Manuel d'utilisateur télécharger pdf (Page 205)

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 Check engine/Service engine

soon light 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 Check engine/Service engine soon light 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”

condition. To ready the on-board diagnostics system for I/M testing, a

minimum of 30 minutes of city and highway driving is necessary as

described below:

• First, at least 10 minutes of driving on an expressway or highway.

• Next, at least 20 minutes driving in stop-and-go, city-type traffic with

at least four idle periods.

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2005 Thunderbird (tbr), Owners Guide (post-2002-fmt) (own2002),

Market: USA_English (fus)

Maintenance and Specifications

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Ford 2005 Thunderbird v.1 Manuel d'utilisateur Page 205

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