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92 C124 M104 No Spark at ICM/EZL
My car overheated the other day and I ended up having to tow it to a local shop who had fixed that problem by changing out the thermostat, reservoir sensor and fluid.
Upon leaving the shop, the car didn't want to turn over. He tries cranking it for about 10 seconds at a time with no turn. He checked the engine code and started analyzing the components that led him to the Ignition Control Module (ICM). He tried placing a spark plug on the ICM with no spark then concluded to replace the Crank Sensor. This didn't work. He concluded the ICM is faulty. I'd bought a used one and this still didnt work. As of now my car is immobile until I find/suggest a solution to him.
What supplies power to the ICM? How can I root this problem?
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