Temperature Display

WARNING: This page is about a different car, the 2004 Dodge Pickup and 2004 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

All the available overhead consoles on this model include Temperature information. The temperature displays the outside ambient temperature in whole degrees. The temperature display can be toggled from Fahrenheit to Celsius by selecting the desired U.S./Metric option from the customer programmable features. The displayed temperature is not an instant reading of conditions, but an average temperature. It may take the temperature display several minutes to respond to a major temperature change, such as driving out of a heated garage into winter temperatures.

When the ignition switch is turned to the Off position, the last displayed temperature reading stays in the electronic control modules, (CMTC, EVIC) memory. When the ignition switch is turned to the On position again, the electronic module will display the memory temperature for one minute; then update the display to the current average temperature reading within five minutes.

The temperature function is supported by an ambient temperature sensor. This sensor is mounted outside the passenger compartment near the front and center of the vehicle, and is hard wired to the Front Control Module (FCM). The FCM sends temperature status messages to the module over the J1850 PCI data bus circuit. For more information on the ambient temperature sensor, refer to AMBIENT TEMPERATURE SENSOR .

Following are general descriptions of the major components used in the overhead console. Refer to appropriate SYSTEM WIRING DIAGRAMS article for complete circuit schematics.