This tutorial will assist you come diagnose a negative ignition control module (ICM) and/or a poor crankshaft place sensor on your 2.3L Ford Mustang or Ranger (Mazda B2300) there is no removing castle from your Ford.

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Specifically, v this indict I"m gonna" assist you diagnose two of the most common failures with this type of ignition regulate module (ICM) setup:

No start as result of a no spark condition either since the:Crank sensor has failed.ORThe ignition module has failed.Misfire due to a poor ignition module.

Since the ICM isn"t cheap and replacing the crank sensor is labor extensive (you"ve acquired to remove the time belt), testing the ICM and also crank sensor, on her 2.3L Ford Ranger or Mustang (or B2300), becomes a must!

For your cross reference information, the ignition regulate module test that this post covers are:

AutoZone part #:Duralast F138O"reilly component #:BWD CBE42Motorcraft DY959AC Delco F1929AOthers:STANDARD motor PRODUCTS part # LX230TSTANDARD engine PRODUCTS part # LX230Airtex part # 6H1091WELLS part # F138

Puedes encontrar este accuse en Español aquí: Cómo Probar El Módulo De Encendido Y El Sensor del Cigüeñal (2.3L Ford) (en:

What Tools perform I need to Test The Ignition control Module Or The Crank Sensor?

I deserve to tell you best off the bat the the one point you don"t need is a scan tool. You require a few basic things and also they are:

MultimeterA digital or analog multimeter will certainly work.Wire Piercing Probe

You"ll additionally need an easy hand devices to remove the ignition module (if that tests negative that is), favor a ratchet wrench, sockets, etc.

Ignition Module Circuit Descriptions


The ignition regulate module has actually two connectors. Looking under at the ignition module (with the ignition module tho bolted to the intake manifold), you"ll an alert that the ignition regulate module has actually a top connector and also a bottom connector.

In the pin the end charts listed below is a short job description of what each wire does.

NOTE: although I"ve contained the shade of the wires, in the charts below, there"s a an excellent chance that these colors won"t match what"s top top your details Ford Ranger or Mustang or Mazda B2300. This is no cause for concern since the wires" job description doesn"t change.

Wiring Diagram: The following wiring diagram might be of help: 1992-1994 2.3L Ford Ranger Ignition system Wiring Diagram.

Top ICM Connector pen outsPinWire ColorDescription
1Red w/ Light green stripe*Ignition power (Hot in Start/Run)
2Gray*Cylinder identification (CID)
3Gray w/ Orange stripe*PIP (PCM Module Signal)
4Dark Blue*PIP (Crank Sensor Signal)
5Pink*SPOUT Signal
6Dark Blue w/ Yellow stripe*Dual Plug Inhibit (DPI) Input

* Your particular Ford automobile may have different colors.

Bottom ICM Connector pin outPinWire ColorDescription
7Orange w/ Red stripe*Ignition Ground
8Tan w/ irradiate Blue stripe*Coil 3 (Spark Plugs #1 and #4Left next Engine)
9Tan w/ Light environment-friendly stripe*Coil 4 (Spark Plugs #2 and also #3Left side of Engine)
10Tan w/ Orange stripe*Coil 2 (Spark Plugs #2 and #3Right next of Engine)
11Tan w/ White stripe*Coil 1 (Spark Plugs #1 and also #4Right next of Engine)
12Tan w/ Yellow stripe*Ignition Diagnostic screen (IDM)

* Your details Ford automobile may have different colors.

Where to Buy The Ignition Module and also Save

How The Ignition control Module Works

The ignition module is tasked through activating the 2 ignition coil packs the feed the 8 spark plugs the the 2.3L 4 cylinder engine is fitted with.

Now, ns won"t enter minute technological detail as to how every little thing works in this ignition system. Simply the basics that you and also I need to get to the bottom that the problem. In a nutshell, this is what happens as soon as you turn On the vital and crank the engine:

The crank sensor is fed with power and Ground.The crank sensor is a Hall-Effect form sensor.The crankshaft rotation cause the crank sensor come start creating two different crank signals.One crank signal is called the CKP (crankshaft position) signal.The CKP signal is just sent to the ICM.The various other crank signal is dubbed the CDI (Cylinder Identification) signal.The CID (Cylinder Identification) signal is the one the helps the ignition control module synchronize the ignition coil packs so that they fire in the exactly firing order.Both the ICM and the PCM obtain the CID signal.The ignition module now starts to activate the coil packs.During engine cranking, only the appropriate side spark plugs (exhaust manifold side of the engine) room fired.Once the engine starts, the PCM now regulates the ICM come fire both coil packs through the twin Plug Inhibit (DPI) circuit (circuit 6 of the ICM optimal Connector), .Each coil load feeds spark to 4 spark plugs top top either next of the engine.Spark Plugs on the input manifold next of the engine are described as: Intake side Spark Plugs or Right side Spark Plugs.Spark Plugs top top the exhaust manifold side of the engine are referred to as: Exhaust next Spark Plugs or Left side Spark Plugs.

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If you"re analysis this tutorial, it"s because you"ve gained a problem and also this stinks, but the really cool thing is the you deserve to test the ignition control module and also the crank sensor without having to change them first, and I"ll present you how.