How do I check if the ICM is working?
 

My car ran perfect till yesterday it died while i was driving it and now won't start, cranks but won't fire. Can hear the fuel pump, and smell gas when i crank it. Theres no spark. brought the coil to autozone and it checked out. The rotor worked properly when i cranked it also and the points seemed fine on the cap. How could i tell if i needed a new cap and rotor? there wasn't any corrosion inside the distributor. My next thing to get checked is the ICM. How can i go about getting it checked to see if it works properly?thnx

The service manual does not mention a direct test for ICM function, but I believe that AutoZone will test your ICM free of charge. Remove it from the distributor and bring it to the store.

-Have you checked whether the distributor connector has battery voltage when the key is turned to ON(II)?

-Is the CEL ON?

-Have you checked whether the timing belt snapped?

I asked Autozone and they don't have the equipment to check it ICM. I checked and there is voltage coming from the distributor. When i turn the key to the (II) position the CEL goes on for a second or two and then goes off. The timing belt and water pump have been replaced within a year so i doubt it snapped. The ICM is connected by 2 screws i believe, one i can get at and the other one i'd have to take out the camshaft i think? I'm sorta afraid to take the distributor more apart, potenially screwing up the timing or something and making more problems? I'm lost on what to do now...

Call additional auto parts store about bench testing your ICM. Do you have a 96-00 Civic?

You can determine whether the timing belt snapped by removing the oil fill cap and looking under the valve cover with a flashlight to see whether the cam turns while a buddy cranks the engine.

To access the ICM, you need to remove the rotor. The diagrams may help:

Attachment 24180

Attachment 24181