There isn't one. "Inertia" switches are mainly a Ford thing.
What kind of problem are you trying to solve? If it is a crank / no-start condition, first check if you have spark. If you do not, you won't have a running fuel pump either, although you are likely to have what looks like normal fuel pressure because the fuel pump still runs for one second when you turn on the ignition switch. Also listen for the hum of the pump for that one second.
If you do have spark, but no fuel pressure, a failing fuel pump is the best suspect. Unlike GM fuel pumps that commonly fail while you're driving, Chrysler pumps rarely fail that way. They almost always fail by failing to start up. You can often get them going again by banging on the bottom of the gas tank. It will usually keep running as long as the engine remains running. The pump will fail to start up again anywhere from the next time to a few months later. The problem will become worse over time.
If there is no spark, the first thing to do is read and record the diagnostic fault codes. Chrysler made doing that yourself much easier than any other manufacturer. Cycle the ignition switch from "off" to "run" three times within five seconds, leave it in "run", then watch the code number(s) appear in the odometer display. You can go here:
https://www.2carpros.com/trouble_codes/obd2/p0400
to see the definitions, or I can interpret them for you.
Monday, September 21st, 2020 AT 8:10 PM
