I have no spark, no ignition, no current is going to the ignition coil. Could this be a Auto Shut-Down Relay?

I have a 1995 Dodge Grand Caravan with a 3.3 Liter V-6 Engine. There is NO ignition, No Spark. There is no current going to the ignition coil… the Coil Pack. The engine cranks, turns-over fine, But No Spark. What's wrong? Could it be a Engine Control Modual? Could it be a Auto Shut-Down Relay? I need some help! I got no fire in the belly of my beast!

My car has 175000 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
The automatic shutdown (ASD) relay powers the coil and is turned on and off by the engine control module ECM. If you scan the engine and get a code 40, then you may have a bad ASD relay, but there is a pinpoint test to follow in order to reach this diagnosis. I suggest replacing the relay with a known good one to see if it starts and runs. If it still does not start, then there is a long pinpoint test to follow in order to diagnose your car’s trouble starting.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

It is extremely rare for a no spark condition to be the result of a faulty coil or ECM.
If the ignition control module has failed altogether, it`ll create a weak spark, and the car won`t start. Check to see if the switch and terminals are free from rust and replace any damaged or broken spark plugs wires as necessary. Alternatively, it could be a bad ignition module.
If the ignition coil does not have spark, it`s time to check its wires. Use a test light to check the continuity on the signal wire and power wire on the ignition coil. If both wires are functional but the coil fails to produce spark, the ignition coil or the ignition control module is bad.
The most common reasons a Dodge Caravan won`t start are a dead battery, an alternator problem, or failed starter. Search our network of RepairPal Certified shops near you to speak with a technician about your issue.
If your ECM can`t make adjustments to your car`s timing or air to fuel ratio, the vehicle may not start at all. Of course, there are other reasons a car may not start, including a bad starter or a blown alternator. If you`ve replaced these parts and your car won`t start, your ECM is the most likely cause.
If your vehicle fails to start for no apparent reason, this is also a good indicator that there may be a problem with the ECU. If you check the car battery, starter and other common electrical components, and the vehicle still does not start, a faulty engine control unit should be the next logical thing to consider.
If the ignition relay shorts, burns out, or otherwise fails while the engine is operating it will cut off power to the fuel pump and ignition system. This will cause the vehicle to immediately stall due to fuel and spark being cut off.
Bad Sensors

One common culprit for this problem is the crankshaft position sensor, which measures the position and speed of the crankshaft. The computer uses the information from this sensor to know when to fire the spark plugs. If the sensor isn`t working, the spark plugs won`t fire, keeping the engine from starting.

If your engine is not sparking, it may be due to a problem with the CDI box. However, other potential causes of no spark include issues with the ignition coil, spark plug, or wiring.
You can find three buttons on the left in the Dodge Caravan conditioning controls. Press and hold the topmost and the bottom buttons.
If the programming is present or you are trying to program the module, and it still will not communicate with your scan tool or laptop, the issue could be with the OBDII connector under the dash. Often, the connector can be damaged if the scan tool or code reader has been pushed in and out frequently.
The engine will not start. Unless your new ECU was programmed before it was shipped to you, it is a brick. It has to be programmed to the vehicle it is installed in. Many cars manufactured before 1996 had “generic” ECU/PCM/ECM controllers.
Fundamentally, the engine ECU controls the injection of the fuel and, in petrol engines, the timing of the spark to ignite it. It determines the position of the engine`s internals using a Crankshaft Position Sensor so that the injectors and ignition system are activated at precisely the correct time.
Method Two: Remove the ECU Fuse

Thus, without a working ECU, a car can not get fuel to the engine, meaning it can not run.

If your car doesn`t start or takes several attempts to get running, this could also be another PCM failure system. This can be caused by several different PCM errors, but may also be an indication of something wrong in your ECM.
Engine Stalls

Power for crucial engine components like the fuel pump and ignition coils is provided by the ignition relay. You may probably predict what will happen if it can`t supply electricity to them because, without these parts, your engine will quickly shut down.

The engine will not start

If the main relay is not supplying the engine computer with the power it needs, then the engine will not be able to crank and run the right way. Failing to get the main relay replaced will usually lead to the car being unusable.

What Is An ECM Power Relay? ECM stands for engine control module – the computer that makes your entire car function on its own. The ECM power relay monitors and delivers power to the ECM which in turn decides how virtually every other component in your engine runs.
The battery is the power source of the ignition system as it transfers the required energy to the system as the ignition switch is on.
One of the reasons your spark plugs might be firing incorrectly is due to a faulty crankshaft position sensor. It`s this sensor that tells your engine`s computer the position of all the valves and pistons at any given moment. The ECU then uses this information to determine when to fire the spark.
If you ignore the symptoms listed here and your camshaft position sensor fails, your vehicle will not start. As a camshaft position sensor weakens, so does the data it transmits to the ECM. Eventually the data signal becomes so weak the ECM switches off fuel and spark delivery, and your engine will not start.
Fundamentally, the engine ECU controls the injection of the fuel and, in petrol engines, the timing of the spark to ignite it. It determines the position of the engine`s internals using a Crankshaft Position Sensor so that the injectors and ignition system are activated at precisely the correct time.
If no spark appears, check for broken wires, shorts, grounds or a defective stop switch. Once you have confirmed that the stop switch is working, reconnect the spark plug lead.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

I have no spark, no ignition, no current is going to the ignition coil. Could this be a Auto Shut-Down Relay?
ANSWER : The automatic shutdown (ASD) relay powers the coil and is turned on and off by the engine control module ECM. If you scan the engine and get a code 40, then you may have a bad ASD relay, but there is a pinpoint test to follow in order to reach this diagnosis. I suggest replacing the relay with a known good one to see if it starts and runs. If it still does not start, then there is a long pinpoint test to follow in order to diagnose your car’s trouble starting.

Misfire, but ignition coil is good so what could be causing this? 2004 Dodge RAM 1500
ANSWER : Hi there – there are several possibilities for your misfiring engine: the new coil is bad as well (moving the coil seems to have moved the problem?), oil or debris in the spark plug recess that is causing shorting between the plug and block, or an incompatibility between the plugs and the engine combustion chamber. (Some engines don’t tolerate multi-electrode designs and misfire.) I would recommend a misfire inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

Engine light fault. There was a bad spark plug and a failed ignition coil. Replaced both the coil pack or spark plug.
ANSWER : Hi there. If the light is coming on then shutting off and returning on, then if the issue is for the same coil, there could be an issue with the wiring on the coil plug. Check the wiring on the coil plug and see if the wires are split, broken, or burned. If there is nothing wrong with the plug, then the main engine harness has an issue / short and may need replaced. If you need further assistance with your ignition system, then seek out a professional, such as one from Your Mechanic, to help you.

No spark replaced opti, coil, ice, pcm, bypassed vats still no spark
ANSWER : Hi there:

This might seem to be over simplification, but you might want to double check all ground wire connections to the distributor first. Quite often a simple step like this is often one that’s overlooked. If you’re still struggling to find this electrical gremlin, contact a local mobile mechanic and ask them to complete a electrical problems inspection to give you a hand.

Changing spark plug or ignition coils
ANSWER : Changing spark plugs at 46000 isn’t necessarily a bad idea, but mostly I say that because it will keep them from seizing to the cylinder head. Most late model cars like yours can run a set of plugs for longer than that. As for the coils, If the car is not misfiring, I don’t see why you would want to change them and neither does the maxcare company. If the car IS misfiring, then the check engine light will come on and it will set misfire codes. So I don’t see why it would be necessary to do it just yet. If you want to get a third opinion on that, you can contact Your Mechanic to have a technician come out to your home or office to check out your BMW and tell you just what it needs.

Misfire, loss of power, CEL comes on… Replacing ignition coils did not fix
ANSWER : Hello. The numbers you have provided did not yield any results through my search. If the part numbers are different, and the ends are physically different, then they may very well be different coils or it may just be an updated design. I would verify with a parts specialist or BMW dealership if the parts are compatible or not. Also, keep in mind that it may be possible that the coil packs are not the source of the issue. If the Check Engine Light is on I would scan the trouble codes as they may help shed some light on if the coils are the issue or not. A certified professional from YourMechanic can come to your car’s location to diagnose the Check Engine Light and loss of power in order to make the correct repairs.

No start issue: crank but no spark- replaced ignition coil
ANSWER : The starter will not have any impact on the engine’s ability to produce spark. There are a number of issues that may cause an ignition system to not produce spark.

A bad crankshaft position (CKP) sensor (on engines that do not have a distributor), or broken, loose or corroded wires from the sensor to the PCM.
A bad ignition module (on engines that have a distributor or use an ignition module separate from the PCM)
A bad pickup inside the distributor (on engines that have a distributor), a stripped distributor drive gear (common problem with plastic distributor drive gears), broken, loose or corroded wires from the pickup to the ignition module or PCM.
A bad ignition coil (on engines that have a distributor and a single coil)
A bad rotor or distributor cap (cracks or carbon tracks that are allowing the spark to short to ground)
A faulty ignition switch.

Any of the above issues may contribute to a lack of spark problem and should be looked at by a qualified mechanic such as one from YourMechanic. I would suggest having one of our professionals come to your location to diagnose and inspect your spark problem.

Car sputters and has weak power after new spark plugs and ignition coil were recently replaced
ANSWER : There are actually several possible causes for the engine to sputter. It is possible for there to be a vacuum leak, a faulty oxygen sensor, a catalytic converter that is starting to show signs of failure, or even a possible problem in the fuel system. It will be necessary to do some further diagnostics to determine which system is causing the problem, and then figure out which part in that system is the root cause. For example, if it is found that there is low fuel pressure in the system, it will then be necessary to figure out if there is a weak fuel pump, clogged fuel filter, or something going on with an injector. If the problem appears to be with the ignition, there could be a problem with a spark plug, ignition coil, ignition control module, or a fault in the wiring. I understand you said that the plugs and coil had been replaced, but it is possible that one of them have failed again, since the problem is recurring. If this is something you could use a hand in identifying, I would suggest consulting a certified mechanic, like those available at YourMechanic.com.