93 2.3L DIS wiring diagrams - Ford Mustang Forum
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post #1 of 5 (permalink) Old 06-11-2003 Thread Starter
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Joined: Jun 2003
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93 2.3L DIS wiring diagrams

Ok you Mustang Fans , I need some help locating some info on my wife's 93 Mustang. Check engine light is coming on with a code 223. Supposed to be a fault with the ignition module or engine computer. Now troubleshooting this would be no prob for me if I could find a wiring diagram that show the interconnection between these 2 devices. The books I have found show typical drawings but they do not include the DIS system in them. Anybody know where I can find a correct drawing?

Thanks for your help.

MY wife is the Mustang fan and I'm the mechanic who gets to work on it for her. I grew up around Chevys and will always be a ChevyGuy but I gotta keep the wife happy. She ain't real happy right now. She doesn't like the Check Engine light being on. I do know that 2 of the plugs on the passenger's side of the car are not firing when the Check Engine light comes on.

The car is a 93 2.3L Mustang with 2 spark plugs per cylinder NON Turbo. It was bought used and ran fine at first. My wife says the power level has dropped some since she first got it.
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post #2 of 5 (permalink) Old 06-12-2003
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Location: Midland
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I had that problem on my 91 2.3L. I couldn't get a code out of it but i only asked Auto Zone and they are basically clueless and don't get paid enough to do a complete diagnosis. I bought a used control module from a guy on here and installed it with some grease on the back and it worked just fine.

'91 LX 2.3L
Always looking to better it
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post #3 of 5 (permalink) Old 06-23-2003 Thread Starter
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OK My wife found a chilton's cd that has the wiring diagrams I needed. Unfortunately it also says you need special tools to check out the ICM --- or take it off and have it tested. I Have decided it isn't a bad coil or bad plugs. I have 2 plugs not firing on the right side so I swapped the Coils. They are identical and the same 2 plugs still did not fire. I checked the coil by starting the engine --- removing the suspect plug wire and placing a grounded wire down into the socket for the plug wire. No fire from either coil when hooked to fire the exhaust side wiring harness. ???? Should I go buy a $90 ignition module or a $90 ECM/PCM. ?????

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post #4 of 5 (permalink) Old 07-03-2003
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Joined: Jun 2003
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I had the same problem. Bought a Ignition module and replaced. Didn't do a change on firing all the spark plugs. Took the old one to do a diagnostics and they told the ignition module is working OK. Talked to a Ford Mechanic and he told me could be three things:

- Ignition module
- Cranckase sensor or
- Wiring harness broken or cracked somewhere giving a ground.

The best way to do it is remove the old Ignition module and then take for testing, you will be wasting a couple of dollars by buying dielectric compound that you should be using when you put the old module back, if it tested OK. And no $90 for a component that you didn't need it.
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post #5 of 5 (permalink) Old 07-03-2003 Thread Starter
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Thanks I went ahead and blew the $90 for the ignition module. It seems to have fixed the problem. And the wife is not complaining anymore.
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