What makes the ignition coil start to spark?

What makes the ignition coil start to spark?

Also, after receiving the pick up coil signal, the ignition control module starts to switch the primary current (of the ignition coil) On and Off. As you might already know, it’s this ‘Switching Signal’ that makes the ignition coil start sparking away.

Why is my GM ignition module not working?

CASE 2: You DID NOT get 10 to 12 Volts. Without this voltage the ignition control module nor the ignition coil will work. Your next step is to find out why this voltage is missing and resolve it. Resolving this power issue should solve your engine’s no start problem.

Where does the pick up coil signal go in an ignition module?

This pick up coil signal is sent directly to the ignition control module. The ignition module, upon receiving this pick up coil signal (for all intended purposes it’s a crankshaft position sensor signal) converts it to a digital signal that is now sent to the fuel injection computer.

What to do if your ignition coil is not working?

Older ignition systems used breaker points to interrupt the circuit, while more modern systems “sense” the need for spark by means of a hall-effect switch or crankshaft position sensor. The ignition module uses the information to time spark generation. Test these components if the energized coil fails to function.

Can a bad ignition coil cause a car to not start?

This article will take you step by step through the whole process of diagnosing and troubleshooting a bad ignition control module and ignition coil. The ignition control module (ICM) and ignition coil tests in this article assume that your vehicle is Cranking but NOT STARTING due to a NO SPARK Condition.

What was the ignition module for a 1996 GMC c2500?

1996 GMC C1500, C2500, C3500 Pick Up. 1996 GMC K1500, K2500, K3500 Pick Up. All of the information you need to diagnose a misfire or a no-start problem (caused by the ignition coil, the ignition module, or the crankshaft position sensor).

How to troubleshoot a GM 4.3L no start?

Check that the 8 cylinders are getting spark with a spark tester. The distributor cap is good. The ignition coil is good. The ignition control module is good. The crankshaft position sensor is good. The distributor cap could be bad. The ignition coil to distributor cap high tension wire could be bad. The ignition coil could be bad.

Where does the power from the ignition coil come from?

Each circuit is identified by a letter, and this is the same letter that you will find on the ignition coil’s connector. Power (12 V) Circuit. Tach Signal for the tachometer in the instrument cluster if equipped. Switching Signal Circuit. This wire (circuit) comes from the ignition module.