DIAGRAM 1: Automatic Transmission
Here is the typical and simplified starter motor wiring diagram for the 2001, 2002 2.4L DOHC Chrysler Sebring (Sebring Convertible) and 2001, 2002 2.4L DOHC Dodge Stratus equipped with an automatic transmission.
You can find the location of the starter motor relay here: Starter Motor Relay Location.
The starter motor can be easily bench-tested. You can find the tutorial explaining the starter motor bench test here: How To Bench Test A Starter Motor (Step By Step).
The following starter motor wiring diagrams may be of help: