How to test 7MGE ign control module? Hit & miss starting problem 89 Cressida

My '89 Cressida with 7MGE has developed a problem where it takes numerous t ries to start.

Crank a few - pause - crank a few - pause - crank a few - pause - crank a f ew - starts

Once it finally starts it runs like a clock. No problem. It got worse over the period of probably a month or so - now it does it pretty consistently w hen cold but will also do it after getting up to operating temp and sitting for 5 - 20 mins. If I turn it off and restart immediately it will fire up again. Sometimes it will start right up cold too.

The immediate cause is clearly no spark as per inductive timing light. Then suddenly there's spark and it runs. I've determined there's fuel - disconn ected the fitting to the fuel rail when symptoms show up, wrapped it in pap er towels and cranked - fuel is flowing.

So, what does this suggest? ICM going funky? What other culprits?

What's a good way to test the ICM?

Thanks for all input.

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docsavage20
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