1988 ford ignition module wiring

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1988 ford ignition module wiring

If you're old Ford doesn't fire up you might be experiencing Ford ignition module problems. Although I recommend a few quick tests before you replace the part, if your distributor mounted ignition module looks like the image on the right you probably just found your failed component.

Here we'll talk about how long a Ford ignition module lasts, what it takes to replace it and a special tool that you're going to need to get the job done. In addition, we'll talk about applying dielectric grease to the new part so it lasts as long as the original equipment ignition module. Another piece of good news is, the replacement Ford ignition module available on this page features an improved design over the one that might be causing your no start condition today.

Sidebar: Chevrolet fans suffer from this issue as well. See this article about Chevrolet ignition module problems.

Ford Ignition Control Module Wiring Diagram

No Spark Caused from a Failed Ford Ignition Module Ignition Spark Test Diagram When the ignition module fails, the engine turns over normally, but doesn't even sputter or kick like it's trying to start. Of course, other situations like a failed fuel pump or even a clogged fuel filter can cause the same symptoms. Therefore we're going to grab an inexpensive inline ignition spark tester to verify we don't have any spark at all reaching the spark plugs.

You remove the spark plug boot and insert the tester in line with the ignition wire. Next you attach the other end to the spark plug. You can also set up a jumper wire with one end attached to a good ground found on a frame bolt or even the negative terminal of the battery.

The jumper wire gives you the flexibility to set up the spark tester where you can see it.

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This allows you to view the spark jumping during a one-man test. Finally, you crank the engine around and look for a strong spark in the plastic visible window on the spark tester tool. If you have spark coming out of the distributor, then your ignition module is not the problem.

In this situation, I would take a quick fuel pressure test to make sure you're not dealing with the lack of fuel problem mentioned above.

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If you don't have spark and you have one of those rectangular boxes mounted on the front side of the distributor then there is a strong likelihood this is your malfunction. Before we throw that thing in the trash and get a new part let's make sure we have spark coming out of the coil.

1988 ford ignition module wiring

Although the module fails more often than the coil I have seen both parts go at the same time. Take the spark tester and put it in line with the coil in the same way you did with the spark plug wire.The module receives a signal from a sensor inside the distributor. The signal is then used to fire the ignition coil creating the energy for the spark plugs.

The ignition module may be located inside the distributor, on the distributor housing, or mounted to the side of the engine compartment. When a module goes bad, it normally fails totally and the engine won't run at all. Checking your ignition module is an easy task that requires only the simplest of tools. Remove one plug wire at the spark plug and insert an old spark plug into the end of the plug boot. Place the spark plug on a metal surface on the engine. Crank the engine and check for a spark at the old spark plug.

No spark on the plug indicates an ignition problem. Check for voltage at the coil positive terminal when the ignition key is on. Place the red lead of the multimeter on the positive coil terminal.

Place the black lead to the battery negative terminal. Turn on the ignition switch to the "Run" position. The multimeter should read battery voltage at the positive terminal. If voltage is not present, then the problem is with the ignition switch or ignition wiring circuit. Turn the key "Run" position without starting the engine.

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Pierce the positive wire with the multimeter's red lead. There should be a reading of battery voltage at the wire. If battery voltage is not present, check for an open circuit between the wire and the ignition switch. Locate the ignition module negative - wire. Pierce the negative wire with the multimeter's red lead.

Remove the distributor cap without removing the spark plug wires. Rotate the distributor center shaft by hand or by cranking the engine.

1988 ford ignition module wiring

Observe the distributor rotor as the engine is being cranked over.In this fast test you'll be able to pinpoint the problem to the ignition control module or the ignition coil or the Profile Ignition Pickup sensor PIP sensor in four easy test steps.

So then, before starting the tests, it's critical that you have checked and verified that there's NO SPARK present at the ignition coil. Well, because if the ignition coil is sparking, it would be a clear indication that it and the ignition coil and the crankshaft position sensor PIP sensor are working.

This article applies to both the Gray colored ignition control module and the Black colored ignition control module. These ignition control modules are not interchangeable.

Here's a little background information to help you diagnose this no spark condition. In a nutshell, when the system is working properly, at CRANK-UP and at all engine speeds, the ignition control module controls the ignition coil. This is primarily done thru' the Profile Ignition Pickup sensor signal which is received by the ignition control module and also the ECM.

The ignition control module ICM upon receiving this signal, starts switching the ignition coil's ground On and Off. As you may already know, it's this action that makes the ignition coil spark away. On an oscilloscope, it produces a digital square waveform. This sensor is located in the distributor.

There are several ways to test this ignition control module. An oscilloscope is the best way to check all of the input and output signals but it's not the only way. I'll show you just how.

Anyway, if you have access to an oscilloscope, I have included photos of what the waveforms should look like. Whether you use a multimeter or an oscilloscope, you'll be able to successfully diagnose this no-start condition! So, here's the basic list:. We'll first check for the basics like battery voltage and engine Ground to the ignition control module. Then we'll test the ignition coil switching signal that the signal generates in action and from the results you get you'll be able to pinpoint the problem to the ignition control module ICM or the ignition coil or the Profile Ignition Pickup PIP sensor or completely eliminate these as the cause of the no start condition.

Also, the battery must be in a fully charged condition for all tests in this article. And lastly, this Fast Test only tests for a no-spark no-start condition. If you find, after testing the testing the ignition module your test results indicate a bad one then take a look at the links below. I think they'll save you some bucks especially on the original Motorcraft ignition module :.

Once you get to the site, they'll make sure it's the right one, if not, they'll find you the right one. Ford Ignition System Circuit Diagram 4. All Tutorials: 4. This material may not be reproduced without the author's consent. As an Amazon Associate, I may earn a small commission from qualifying purchases from the Amazon product links from this website. Your purchase helps support my work in bringing you real diagnostic testing information to help you solve the problem on your vehicle.

Page 1 Page 2 Page 3. Contents of this tutorial:. Applies To:. Ford Vehicles:. Ford Vehicle:. Mercury Vehicles:. Lincoln Vehicles:. Do NOT follow this link or you will be banned from the site! Hate Spam.Ford Ignition Control Module Wiring Diagram — ford ignition control module wiring diagram, ford ignition control module wiring diagram, Every electric arrangement consists of various different pieces.

Each component ought to be set and connected with different parts in specific way. In order to be certain the electric circuit is built properly, Ford Ignition Control Module Wiring Diagram is demanded. How can this diagram aid with circuit construction?

The diagram provides visual representation of the electric arrangement. However, the diagram is a simplified version of this structure. This makes the procedure for assembling circuit easier. This diagram gives information of circuit components in addition to their placements.

The first element is symbol that indicate electrical element from the circuit. A circuit is generally composed by many components. The other thing that you will come across a circuit diagram would be lines. Lines in the diagram show how every component connects to one another.

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The positions of circuit elements are relative, not accurate. The order is also not logical, unlike wiring schematics. Diagram only reveals where to put component at a place relative to other components within the circuit. One thing you have to learn before reading a circuit diagram would be the symbols.

The most common elements are capacitor, resistorbattery. Additionally, there are other components like floor, switch, motor, and inductor. Sometimes, the wires will cross. However, it does not mean link between the cables. Injunction of two wires is usually indicated by black dot on the intersection of 2 lines.Ford used the TFI ignition module thick film ignition on vehicles from through the mids only.

The vehicles that used this module had a conventional hall-effect distributor with a separate coil. The TFI module was located on a flat area on the base of the distributor. On some trucks and cars in the s, the module was located on the radiator support housing within a heat sink.

Troubleshooting a Ford Ignition Module

It contains solid state components encased in a thick clear electrolytic film. Its primary purpose is to send the hall-effect signal indicating top dead center on the number one cylinder to the electronic engine control EEC-IV. The computer then takes the signal and the pulse rate and determines the rpm. The computer sends a signal to the control module when to fire the coil. The control module automatically controls the dwell for sufficient saturation of the coil windings to give the proper spark duration given the rpm in real time without creating undue heat.

It also monitors irregular or missed firing counts and will set a code if a failure is imminent. However, this does not always work properly. There have been many problems with this system, stemming from heat saturation, cracking and a myriad of problems after a period of service.

The modules will fail once they have absorbed too much heat or for case problems. When this happens the vehicle will stall and take a period of time for a successful restart after the heat has dissipated. It can also cause a bad miss on an erratic basis.

1988 ford ignition module wiring

If ignition problems are experienced, the first thing to do is to install a timing light and watch for an irregular spark. If there is, check the plugs. If the plugs are alright, the module should be replaced. They are not expensive, however, they require a small special tool to remove the torx screws in the module housing.

If there was no misfire, but the vehicle is hard to start or stalls, the module should be inspected and replaced if found to be faulty. The module should be removed and checked for cracking around the torx screw mounting surface. There should be a thick film of dielectric grease on the back metal side of the module. This layer of grease keeps the heat off of the module.

If the module looks OK but the grease is depleted, it should be replaced and the module can be tried again by using the timing light for steady spark. The PIP signal should also be checked. The top wire on the connector is used to check for PIP. Use a voltmeter and look for pulsing with the engine running. The pulsing means the wire from the computer to the ignition control module is good and the computer is working. If it is working, the module is bad. If no pulsing is noted, check the third terminal down for pulses to the computer.

It would be wise to replace these modules every 30, miles as a preventative maintenance procedure considering the amount of failures and the relatively low cost versus the aggravation should a failure occur.

The modules have never been modified so the new will only last as long as the old one. This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.

To submit your questions or ideas, or to simply learn more about It Still Works, contact us. Diagnosing the Module If ignition problems are experienced, the first thing to do is to install a timing light and watch for an irregular spark.

About the Author This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.Free Wiring Diagram. Assortment of ford f wiring diagram.

A wiring diagram is a streamlined conventional pictorial representation of an electrical circuit. It shows the components of the circuit as simplified shapes, as well as the power as well as signal connections between the gadgets. A wiring diagram usually provides info regarding the relative position and also arrangement of devices as well as terminals on the devices, to aid in building or servicing the tool.

A photographic representation would certainly reveal more information of the physical look, whereas a wiring diagram makes use of an extra symbolic notation to emphasize interconnections over physical appearance. A wiring diagram is often made use of to fix problems as well as to earn sure that all the links have been made which everything is present. Click on the image to enlarge, and then save it to your computer by right clicking on the image.

A very first consider a circuit representation may be complicated, yet if you could read a metro map, you could check out schematics.

The objective coincides: receiving from point A to direct B. Literally, a circuit is the course that allows electricity to circulation. If you recognize just what to look for, it ll ended up being force of habit. While at very first you ll simply be reviewing them, eventually you will begin creating your very own. This overview will certainly reveal you a few of the common icons that you make certain to see in your future electric engineering profession.

Voltage: Gauged in volts Vvoltage is the stress or force of electrical power. This is generally provided by a battery such as a 9V battery or mains electrical energy, the outlets in your home operate at V. Electrical outlets in other nations operate at a various voltage, which is why you require a converter when traveling.

Existing: Existing is the flow of electricity, or even more especially, the flow of electrons. It is measured in Amperes Ampsand also could just move when a voltage supply is linked. Resistance: Determined in Ohms R or Oresistance defines just how conveniently electrons could move with a product. Materials such as gold or copper, are called conductors, as they quickly enable circulation of movement low resistance.

Plastic, timber, as well as air are instances of insulators, preventing the motion of electrons high resistance. DC Straight Current. DC is a continual flow of current in one instructions. DC could stream not simply with conductors, yet semi-conductors, insulators, as well as a vacuum cleaner. Air Conditioner Alternating Existing. In Air Conditioning, the circulation of existing periodically alternates between 2 directions, often forming a sine wave.

The regularity of Air Conditioner is gauged in Hertz Hzas well as is typically 60 Hz for power in residential as well as company objectives.

Completing an electric design level as well as then obtaining a task in the field means you will certainly see a lot a lot a lot of these schematics.According to the researchers' conclusions, models with higher estimates are more likely to be accurate, meaning the degree of warming is likely 0.

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