Commander 2WD V8-4.7L (2008)
Compass: Description and Operation
Operation
OPERATION
The Compass/Temperature/Trip Computer Mode display provides the outside temperature, one of the eight compass headings to indicate the direction
the vehicle is facing, and vehicle trip information. The compass and temperature display is the normal display. When the C/T button is pressed the
compass/temperature display returns.
The Electronic Vehicle Information Center (EVIC) compass system is comprised of several different components. Those components are:
-
Instrument Cluster
-
Steering Wheel Function Buttons
-
Remote Compass Module (RCM)
-
Controller Area Network (CAN) Data Bus
The RCM data is transferred on the CAN Data Bus circuit. The RCM and EVIC will not function properly if the bus messages are not properly received.
If no EVIC data is displayed, check the CAN Data Bus circuit communications, the RCM, the Instrument Cluster functions and the Front Control
Module (FCM). Any diagnosis of the RCM and EVIC system should begin with, the use of a scan tool and the appropriate diagnostic service
information.
