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Is that the TFI Module you replaced? If not, you can check the voltage to the Unit by using a thin needle, and a voltmeter. (There are instructions in the Haynes manuals...)
The PCM is the big black box in your engine bay firewall. Under the Brake Booster, to the outside of the steering column. It has a big 60-pin Connector which bolts on with one 8mm-10mm nut. (You might have to press it out from the cabin? I have never replaced one.)
Have you not replaced the Ig Coil yet?