Live Data Playback. O2 Sensor Test. Non-Continuous Test. System Test. Vehicle ID. Instrument Panel Indicator Lights. Ford Computer System Overview. Test Connectors. Code Retrieval Procedures. Instrument Panel Malfunction Indicator Lights. Glossary of Terms and Abbreviations.
Limited One Year Warranty. Service Procedures. One of the most exciting improvements in the automobile industry was the addition of on-board diagnostics OBD on vehicles,. Then came the develop-. These systems are part of a government mandate to lower vehicle emissions. Diagnostic information can be accessed through a Data Link Connector test port specifically designed for this purpose.
System status is indicated by LED indicators. This manual describes common test procedures used by experienced service technicians. Always read your vehicle's service manual and fol- low its safety precautions before and during any test or serv-. When an engine is running, it produces carbon monoxide, a toxic and poisonous gas.
To prevent serious injury or death from carbon monoxide poisoning, operate the vehicle ONLY in a well-ventilated area. To protect your eyes from propelled objects as well as hot or caustic liquids, always wear approved safety eye protection. When an engine is running, many parts such as the coolant fan, pulleys, fan belt etc. To avoid serious injury, always be aware of moving parts. Keep a safe distance from these parts as well as other potentially moving objects.
Engine parts become very hot when the engine is running. To prevent severe burns, avoid contact with hot engine parts. Before starting an engine for testing or trouble-shoot- ing, make sure the parking brake is engaged. Put the transmission in park for automatic transmission or neutral for manual transmission. Block the drive wheels with suitable blocks. Connecting or disconnecting test equipment when the ignition is ON can damage test equipment and the vehicle's electronic components.
To prevent damage to the on-board computer when taking vehicle electrical measurements, always use a digital multimeter with at least 10 megOhms of impedance. Fuel and battery vapors are highly flammable.
Don't wear loose clothing or jewelry when working on an engine. Loose clothing can become caught in the fan, pulleys, belts, etc. Jewelry is highly conductive, and can cause a severe burn if it makes contact between a power source and ground. Slide the battery cover off use your fingers.
Replace batteries with three AA-size batteries for longer life, use Alkaline-type batteries. The first time the unit is turned on, you must select the desired display language English, French or Spanish as follows:. After the initial language selection is performed, it, as well as other settings, can be changed as desired. Release the UP button. Make adjustments and settings as described in the following paragraphs.
Press the UP button to decrease the brightness of the display make the display darker. Press the DOWN button to increase. When retrieving and viewing DTCs, scrolls down through the current display screen to display any additional data. When retrieving and viewing DTCs, scrolls ups through the current display screen to display any additional data. Monitors are applicable to OBD2 systems only.
This function is applicable to OBD2 systems only. Monitor icons - Indicate which Monitors are supported by the vehicle under test, and whether or not the associated Monitor has run its diagnostic testing Monitor status. When a Monitor icon is solid, it indicates that the associated Monitor has completed its diagnostic testing. When a Monitor icon is flashing, it indicates that the vehicle supports the associated Monitor, but the Monitor has not yet run its diagnostic testing.
If the batteries are not replaced when the battery symbol is "on", all 3 LEDs will light up as a last resort indicator to warn you that the batteries need replacement. No data will be displayed on screen when all 3 LEDs are lit. Each fault is assigned a code number that is specific to that fault.
Freeze Frame data is applicable to OBD2 systems only. The purpose of this form is to help you gather preliminary information on your vehicle before you retrieve codes. By having a complete account of your vehicle's current problem s , you will be able to systematically pinpoint the problem s by comparing your answers to the fault codes you retrieve. You can also provide this information to your mechanic to assist in diagnosis and help avoid costly and unnecessary repairs.
An electronic version of this Preliminary Vehicle Diagnosis Worksheet is available online at www. You can complete the form online and print a copy to take to your mechanic.
Mechanical problems such as low oil level or damaged. Fix any known mechanical problems before performing any test. A scan tool is a tool that usually doesn't gather dust since as long as you're driving you car mini-van, pick up, SUV , the check engine light will eventually come on.
This is the list of pre vehicles that are OBD I equipped that The Equus will help you to read diagnostic trouble codes:. If your specific vehicle is not on this list of and older vehicles, this scan tool will not help you. This material may not be reproduced without the author's consent. But having an idea of what is causing the check engine light to come on, will save you money.
By researching the diagnostic trouble code definition and what might need to be replaced. Armed with this knowledge, you could possibly negotiate a better price on the repair.
If anything else, you can avoid extra services the shop always tries to include and that you really can't afford and which are not causing the check engine light to come on. If you own an OBD I vehicle that is not on the list of vehicles this tool can service.
So it's critical to check the list to see if your vehicle is on it, otherwise you're gonna' be one unhappy camper and you'll have to send it back. You want to buy a code reader only a code reader only reads diagnostic trouble codes , not a tool that will give you Live Data from the PCM like the Equus does.
Don't get me wrong, you don't need a degree in automotive technology to use this tool but it does take some getting use to in the beginning that is , since this tool has many different features you'll need to learn to navigate.
If you want to connect the scan tool to your laptop to print a simple diagnostic report and your laptop is a modern one with no serial port , you're gonna' need to buy a Serial Port to USB adaptor. This adaptor is not included. The controls are not very intuitive to use.
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