How do you check a GM ignition Control Module?
How do you check a GM ignition Control Module?
If your GM vehicle has a slow or hard start, the ignition control module should be tested with an electrical test light.
- Open the hood of the GM vehicle. Locate the ignition module.
- Connect the positive test light lead to the ignition module signal wire.
- Ask a partner to crank the engine numerous times.
How do you check an ignition module?
Connect the ground lead from the 12-volt test light to the negative terminal on the ignition coil. Have your partner crank the engine over several times. Your test light should flicker on and off. If so, your module is working properly and no further testing is necessary.
Where is the ignition module located?
The ignition module may be located inside the distributor, on the distributor housing, or mounted to the side of the engine compartment. When a module goes bad, it normally fails totally and the engine won’t run at all.
What are the symptoms of a bad ignition coil on a GMC?
Symptoms Of A Bad Ignition Module And Ignition Coil Generally, when the ICM or the ignition coil fails, your GM car or truck will Crank but NOT START. Specifically, the ignition coil will not spark.
How many wires come out of the ignition control module?
Ignition Control Module (ICM) Circuit Descriptions. The ignition control module (ICM) has 4 wires coming out of it. Below are the descriptions of what each circuit does. Each circuit is identified by a letter, and this is the same letter that you will find on the ignition module’s connector.
What does ICM stand for on a GM car?
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. If you’re GM car or truck starts and runs, this article will not help you.
What kind of problems does a 1996 GMC k1500 have?
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). Wiring diagrams.
