GPS Version Information

Selecting the GPS item from the service menu causes the GPS Version info to be displayed. Selecting "<Return" returns the system to the service mode menu. The status of the GPS system can be checked as follows: From the Service mode menu select GPS. Selecting "Function" brings up a menu. On selecting "GPS Status" the system displays the status screen. When the GPS system is exposed to satellites for the first time it can take up to 15 minutes to determine the position of the vehicle. The Receiver status ("Rec Stat") and Position source ("Pos Src") may be used to check that the GPS system is functioning correctly. Receiver status displays one of the following:

COMERR  - There is a communication error between the GPS receiver and the navigation computer.

SEARCH  - The system is tracking a number of satellites. If this is displayed it may simply be that there is a failure in the GPS system. First check that the GPS antenna's view of the sky is not blocked in any way. Check harness connections between the GPS Receiver and the GPS antenna.

TRACK  - The system is tracking a number of satellites. The number displayed in the Position Source indicates how many satellites the GPS system can see. This indicates that the system is all connected correctly but does not have enough information to determine the position f the vehicle. Check that there is nothing obstructing the GPS antenna's view of the sky, i.e. a metallic object on the right hand side plenum area. It may take several minutes for the GPS system to acquire enough satellites to determine the vehicle position.

POS  - The system has a current position fix. This indicates that the GPS system is functioning normally. The Position Source indicates the type of position fix (2D or 3D) and the number of satellites that are available.

The screen shows the current position in Latitude and Longitude, the approximate height of the vehicle and the GPS time and date. The GPS time and date is always displayed in Greenwich meantime (GMT). The ground speed and heading can be checked when the vehicle is in motion - The indicated ground speed should be the actual vehicle speed in m/s and the heading should be the actual direction of the vehicle.