Monitored & Set Conditions

NOTE: Ensure proper communications between front control module and powertrain control module exists before proceeding. If not, diagnose communications fault. See appropriate test under COMMUNICATIONS in BODY CONTROL MODULES - CARAVAN, TOWN & COUNTRY, & VOYAGER article in ACCESSORIES & EQUIPMENT.

Ambient air temperature performance is monitored when ignition is on and coolant temperature is more than 160°F (71°C). DTC will set in Powertrain Control Module (PCM) memory after engine has completed 5 warm-up cycles, odometer mileage has increased 197 miles and inlet air temperature has increased less than 5°F. Two trips are required to set this DTC. Possible causes for DTC to set are: intermittent condition, defective ambient air temperature sensor, defective Front Control Module (FCM), or defective connectors or wiring.