Transmission Control Relay
WARNING: This page is about a different car, the 2002 Dodge Intrepid, 2002 Chrysler Intrepid, 2002 Chrysler Concorde, and 2002 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.
PCM provides voltage to transmission control relay, causing contacts to close, supplying voltage to solenoid assembly and terminals No. 19, 28 and 38. PCM monitors relay supplied battery voltage (switched voltage) to monitor voltage level and function of transmission control relay.