Compass: Description and Operation

COMPASS/TEMPERATURE MIRROR

Compass/Temperature Mirror:

The Compass/Temperature Mirror consists of an electronic control module with a vacuum fluorescent display (VFD) screen, two map/reading lamps and function switches. The electronic module displays the outside temperature and one of eight compass headings to indicate the direction the vehicle is facing. The compass/temperature mirror transmits and receives data on the PCI Data Bus Circuitry.

COMPASS
The compass is capable of self-calibrating. Refer to the procedures later. The compass is located within the mirror module and can not be serviced separately.

THERMOMETER
The Compass/Temperature Mirror displays the outside temperature using data from the NGC engine controller on the PCI databus. Engine temperature can increase the displayed temperature.

The optional compass/temperature mirror incorporates 2 reading lamp buttons, which also function as STEP and ZONE/CALIBRATION buttons. The desired function is obtained by pressing and holding a button depressed for a specific time period. The STEP button provides the selections between English and Metric. The Zone/Cal. button is used to change the compass zone or calibrate the compass.

The STEP button (right reading lamp button) operates a momentary contact switch, which is used to toggle through the following four modes:
- Turn the right reading lamp on and off.
- To select degrees Fahrenheit or Celsius for the temperature display (Press and Hold for 5 to 10 seconds).
- To turn display off (Press and Hold for 10 to 15 seconds).

The ZONE/CALIBRATION button (left reading lamp button) operates a momentary contact switch, which is used to toggle through the following two modes:
- Turn the left reading lamp on and off.
- To actuate compass Zone/Calibration modes (Press and Hold for 5 to 10 seconds).