How does the ignition switch work on a late model Jeep?
The ignition switch on late model cars doesn’t actually switch power to the starter, ignition or fuel system. The switch acts only as a signal to the PCM/body control module. When you turn the key, the PCM/BCM anti-theft system determines whether you’re using the proper key.
Why do I get a no start Jeep?
If so, the PCM provides ground to the auto shutdown relay (ASD), also called the MAIN relay which then operates to provide power to the totally integrated power module (TIPM) which provides power to the fuel injectors and ignition coils. If there’s an issue with the ASD relay or the wiring to the ASD relay, you’ll get a no start Jeep condtion.
What does it mean when your car says no start?
The symptoms appear as a crank, no start where the starter engages and turns the engine but it will not fire up. The ignition switch on late model cars doesn’t actually switch power to the starter, ignition or fuel system. The switch acts only as a signal to the PCM/body control module.
Can a bad ignition switch cause a car not to start?
However, if your car has ignition switch problems, you may not be able to start the car at all. Ignition switch problems can also cause issues on the road, such as unexpected shutdowns or electrical problems.
Can a bad ignition switch keep a Jeep Wrangler from starting?
And, it can keep your Wrangler from starting in a couple of different ways. The first is when the starter cranks, but the bad ignition switch doesn’t turn on the fuel pump or ignition. The engine will just turn over with no spark. The second way is when the starter doesn’t turn at all.
Why does my Jeep Wrangler not start up?
However, if your fuel gauge shows that the tank is full, there may be a problem with signal transmission. Then you should just be looking into the tank. Or, the fuel filter is clogged so that fuel cannot be pumped to the engine properly.
What are the symptoms of a bad ignition switch?
The most noticeable symptom of a bad ignition switch is stalling. Your Wrangler stalls because the faulty switch turns off the fuel pump or power to the ignition. When this happens, the engine will not be able to run until it gets that signal back. 2.