While the issue might clear itself up and go unnoticed in the short term, it can lead to bigger trouble over time.

Check for trouble codes of course. Sure, you could spend the money on a good Ford-specific EEC-IV diagnostic code reader, but why do that when you could just as easily test for trouble codes manually?

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Yes, you heard that right. Not just that, but you can also check the Continuous Memory codes that are stored in the system. These codes can give you an idea about other systems that might be having problems that you might otherwise not catch; you can even perform a cylinder balance test that will pinpoint a misfire or a cylinder that might have lower compression compared to the others.

A paperclip will work fine to make a bypass jumper connection at the test port, but we prefer to use a simple electrical wire about 3 inches in length with crimped-on spade terminals on both ends for a solid connection.

Beyond that, all you need is a piece of paper and a pen to write down the number of times the check engine light flashes and a few minutes of your time. Make sure you bring the car up to operating temperature before checking for codes, as this will increase accuracy.

The EEC-IV also known as OBD-I test port is located just behind the driver-side strut tower will have it behind the passenger-side strut tower and is mounted against the inner fender. The test port will have a cover that holds it and a smaller square port.

Free them from the cover and you should see a large test port that resembles a house and a smaller square plug that has one wire leading to it. Take your bypass jumper connection or paperclip and connect one end to the smaller square terminal. This terminal is known as the Self Test Input. Take the other end of your bypass connection and hook it to the upper right corner of the larger test port.

If you look at it as a house, the correct port would be the upper window near the roof on the right. This terminal is known as the Signal Return. Once you have the bypass connection hooked to both the Signal Input and the Signal Return, you can proceed to the actual test.

Open the ignition switch to the On position without starting the car. Watch the Check Engine light closely because it will begin to flash.This page explains how to get the codes without any special tools.

The codes are listed seperately based upon fuel delivery type. The codes are defined as to what system is affected. When possible we give the more descriptive name of the component and the more commonly known OBD II component name.

This information combined with proper testing procedures, specifications, and tools like a digital multimeter can help you fix the vehicle right the first time.

OBD diagnostic does not have to be difficult or inconclusive. This is not meant to be a substitute for information in the factory service manuals or the product service training manuals.

If using 12Vdc circuit test lightpay careful attention to length of pauses in order to read codes correctly. Connections are displayed in image. A 2-second pause occurs between digits in a code. A 4-second pause occurs between each code. Centech Digital Multimeter automotive multimeter measures volts, amps, ohms, frequency, temperatures SmartSpec Diagnostic Specifications Cd complete obd diagnostic specifications for Ford Copyright Straight Talk Automotive Pressure Feedfback PFE sensor voltage out of range 2.

Unable to initiate Self-Test or unable to output Self- Test codes. Service codes displayed are not applicable to the vehicle being tested.Exc DI 7. Merkur 2. Aspire, Capri 1.

ford obd1 codes and procedure

MCU System. Idle Speed Control motor or Air Bypass not controlling idle properly generally idle too high. SPOUT circuit failure, timing defaulted to 10 degrees — follow code diagnosis. Idle speed system not controlling idle properly generally idle too high — ISC. Idle speed system not controlling idle properly generally idle too low — ISC. Much experience,but admittedly not a certified Ford mechanic.

Your email address will not be published. This site uses Akismet to reduce spam. Learn how your comment data is processed. Skip to content. Accessing diagnostic trouble codes. Use the Analog voltmeter or Test light method, not both.

If such a fault occurs, the EEC-IV processor will substitute a value or values and continue operating. In some cases this action may result in a slight change in vehicle driveability. The instrument panel Check Engine lamp will remain on when a hard fault is present. It will represent itself as a flash on the Check Engine lamp display on the instrument panel.

A single digit number of three will be reported by three flashes.

Ford OBD 1 Trouble Codes :

However, as previously stated, a DTC is represented by a two digit number, such as 2—3. As a result, DTC 2—3 will appear on the Check Engine lamp display as two flashes, then after a two second pause, the lamp will flash three times. DTC interpretation.Page 1 of 4. How To Run a Self-Test.

First you need to find the self-test plugs to read c odes from the EEC. There are 2 plugs to find.

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One is triangular and has 6 pins ; it is called the Self-Test plug. These are what the plugs look like. The self-test plugs are located along the driver s side fender by the firewall on Mustangs. The self-test plugs are located along the driver s side fender behind the air filter box on EFI trucks. The sel f -test plugs were mounted on the pa ssenger side fender on EFI trucks.

Page 2 of 4. How to Prepare for the Self-Test. To check for codes without buying a code reader is simple. If your EEC is wired correctly, the engine light works, and there are not any electrical faults in the vehicle you can get the codes out of your EEC. Turn key to OFF. Get a length of wire that can connect the STI to. Ground the Self-Test Input. Get some paper and a pen. Get comfortable in the drivers seat. Try to keep your self from getting distracted.

Turn key to RUN. You will hear some relays engage and the fuel. This is the EEC beginning the test. When the fuel pumps stop be ready to count! If you are a lost soul that does not have a working engine lightor did not install a light into your dash don t fret. You can still get the codes.

ford obd1 codes and procedure

You still need that wire to ground out the STI. Now you will need one of the following tools; digital volt meter, analog volt meter, test light, or you can hook up any other 12 volt light that does not draw more than 0. Get a length of wire that can connect the ST I to the negative battery terminal or body ground. Attach the other lead to the positive side of the battery. If you are using a digital voltmeter you ll want to use the continuity setting.

ford obd1 codes and procedure

If you are using an analog voltmeter you ll be counting the meter make sweeps. If you are using a cheep light you ll count like the rest of us. Try to keep your self from ge tting distracted from here on.For vehicles made afterretrieving the codes of the check engine light in your dash panel is simple.

All you need to do is find your diagnostic connector located under the dash by the driver side. You can then hook up a scanner and the codes will be displayed for you. If you don't have any scanner like most drivers, you can bring your vehicle to any local automotive parts store and they will usually scan the codes FREE for you.

For vehicles made on or beforethe only cheap way to get it is to do it yourself! No need buying a scanner or running to any parts stores to check the engine light. This system is called obd1 and applies to most vehicles made before for domestics and on imports.

EEC-IV Diagnostic Codes

Both tools are hooked up to the diagnostic connector and when the ignition key is turned on without starting engine the codes will begin to flash in the test light, not in the dash panel. If there is no code, you will normally get code 11 or Both test modes should be used to get the accurate evaluation of the stored fault codes.

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Of all the 3 domestic vehicles, the easiest method to check the engine light is Chrysler products. Because all you need is to turn the ignition key on and off a within 5 seconds and the codes will start to flash in the dash panel.

Counting the codes being flashed is almost the same for these 3 domestic vehicles and most of the codes can be erased or cleared by disconnecting the battery negative terminal for 1 minute and reconnect. Just make sure to check your service manual in case you have electronic equipment such as radio or clock that needs reprogramming in which battery disconnection is not recommended.

Finally after performing repairs on the culprit code, always go for a road test to confirm if the problem is fixed. To get the check engine codes to flash in your dash panel, use a jumper wire or a paper clip and connect terminals A and B of the diagnostic connector.

Turn your ignition key on with engine off and the codes should start to blink. All codes should start with code 12 which is one long flash followed by 2 short flashes. This code 12 means the diagnostic system is normal and will repeat itself continuously if there are no trouble codes.

Otherwise, code 12 will flash 3 times before flashing the fault codes. Ford Owners You can check their check engine light using the diagnostic connector located at the engine compartment by the fender near the battery.

How to Reset an OBD1 Computer

Getting the obd1 codes need a couple of tools: a 4 inch long gage 16 jumper wire and a 12 volt test light. Most Popular. Wet Kit - What is It? Top Searches on. Learn how to repair the different components of your carsuch as the headlight bulbs and your axel assembly. Changing your motor oil has never been easier with this guide. Understand motor jargon, the use of springsthe working of the enginesthe maintenance of your hydraulic pressure and even the legalities involved in having tinted car windows.The second step in troubleshooting the problem is retrieving the engine fault code.

In this guide, we will take a look at how you can read and clear engine fault codes using various scanners. The connector is usually located under your steering wheel, under the dash.

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The connector may have a black plastic cover over it and you may have to remove some covers to reach it. The connector is often black and has 12 pins on it, pretty easy to identify.

If your Check engine light is on you may have a serious problem. Scan your codes and follow the chart to determine what the code means. To troubleshoot, repair and maintain your vehicle, you'll need diagnostic and repair information that is specific to your car.

With full manuals for over 30, vehicles online, you will find obd1 code meaning with an exact match for your Ford vehicle's year, make and model. About Contact Privacy. The first step is to find your vehicles diagnostic plug. Ford OBD Check Process : To troubleshoot, repair and maintain your vehicle, you'll need diagnostic and repair information that is specific to your car There's a special plug that allows you to use a scan tool to communicate with this system directly so you can figure out what's going on with your car.

OBD trouble code informations for cars.Page 1 of 4. How To Run a Self-Test. First you need to find the self-test plugs to read c odes from the EEC. There are 2 plugs to find. One is triangular and has 6 pins ; it is called the Self-Test plug. These are what the plugs look like. The self-test plugs are located along the driver s side fender by the firewall on Mustangs.

The self-test plugs are located along the driver s side fender behind the air filter box on EFI trucks.

ford obd1 codes and procedure

The sel f -test plugs were mounted on the pa ssenger side fender on EFI trucks. Page 2 of 4. How to Prepare for the Self-Test. To check for codes without buying a code reader is simple. If your EEC is wired correctly, the engine light works, and there are not any electrical faults in the vehicle you can get the codes out of your EEC.

Turn key to OFF. Get a length of wire that can connect the STI to. Ground the Self-Test Input. Get some paper and a pen.

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Get comfortable in the drivers seat. Try to keep your self from getting distracted. Turn key to RUN. You will hear some relays engage and the fuel. This is the EEC beginning the test. When the fuel pumps stop be ready to count! If you are a lost soul that does not have a working engine lightor did not install a light into your dash don t fret.

Ford OBD1 Diagnostic Codes

You can still get the codes. You still need that wire to ground out the STI. Now you will need one of the following tools; digital volt meter, analog volt meter, test light, or you can hook up any other 12 volt light that does not draw more than 0.

Get a length of wire that can connect the ST I to the negative battery terminal or body ground. Attach the other lead to the positive side of the battery. If you are using a digital voltmeter you ll want to use the continuity setting. If you are using an analog voltmeter you ll be counting the meter make sweeps. If you are using a cheep light you ll count like the rest of us. Try to keep your self from ge tting distracted from here on.


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