The relay circuit you should be in is for the automatic shutdown, (ASD), relay. The crankshaft position sensor can cause no spark and no fuel, but the better suspect is the camshaft position sensor in the distributor. To verify you are in the right area, if you do not have access to a scanner, monitor the voltage on the feed wire from the ASD relay. That should be a black/red wire, but just look for the wire that is the same color at every injector. This is best tested with a test light. Most digital voltmeters do not respond fast enough to catch what you need to see. Back-probe that wire through the rubber seal at any connector.
You should see the test light turn on for just one second when you turn on the ignition switch, then it will turn off. You may hear the hum of the fuel pump for that one second. If you have that, the ASD relay and circuit are okay, and the engine computer has control of it. What is important is if that voltage comes back during cranking. If it does not, suspect the camshaft position sensor.
Your first step should have been to read and record any diagnostic fault codes, but be aware fault codes for the cam and crank sensors often do not set just from cranking the engine. You did not give any history leading up to a symptom or problem, but setting these fault codes often only occurs when a stalled engine is coasting to a stop. Reading fault codes is easy with a scanner, but if you do not have one, here is a link to reading them yourself:
https://www.2carpros.com/trouble_codes/obd1
Start with the Chrysler procedure. Chrysler made reading their fault codes much easier than any other manufacturer. If this does not work, you will need to follow the procedure for Mitsubishi.
Tuesday, September 29th, 2020 AT 11:16 AM
(Merged)
