The common cause of one driver/transistor failing is a shorted ignition coil primary winding. This is a winding of wire within the ignition coil where each loop is separated by a very thin plastic coating.
How do I test my ignition control 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.
Will a bad ECM cause no spark?
It is extremely rare for a no spark condition to be the result of a faulty coil or ECM. An under charged battery can result is slow cranking speed that will not be optimum for the ignition system. Check the condition of the main and ignition fuses.
Will a bad ignition module keep a car from starting?
Another common symptom of a faulty ESC module is a no start, or no spark condition. The ESC module is one of the components that directly controls engine spark, so if it fails, it can leave the vehicle without spark. A vehicle without spark may still crank, but will not be able to start or run.
What are the signs of a bad ignition module?
Symptoms of a bad ignition module are sudden engine stalling or power loss while the car is in motion, engine stuttering accompanied by a smell of gasoline and an inability to restart the engine following a stall. Decreased gas mileage is also a sign of a compromised ignition module.
What causes ignition modules to fail?
Because the ignition module is electronic and does not utilize moving components, it is normally one of the most reliable part of the engine. When it does fail, it is usually due to heat caused from improper wiring of the ground wire to battery voltage.
What does the ignition control module do?
An ignition control module is a component in a vehicle’s engine that enables a spark to be produced at the correct time in each cylinder. It does much the same job as contact breaker points did in older cars.
