MARK II NAVIGATION SYSTEM CALIBRATION
The calibration procedure of the Mark I system is not required with the Mark II system. This
system self calibrates automatically as the vehicle is driven after following the steps below.
System must be fully functional with no faults present in fault memory.
Correct Map data base CD installed for your area.
Vehicle outside with an unobstructed overhead view. Switch ignition on and allow sys-
tem adequate time to receive a minimum of three GPS signals. This is confirmed by the
green GPS indicator in the map display.
Set the map display to the 400 scale and drive the vehicle on digitized roads. Make fre-
quent turns at intersections where possible.
While driving, the system utilizes the map CD, the received GPS coordinates, the Gyro sen-
sor to determine turn activity and the wheel speed sensor input. It compares all of these
variables and automatically pinpoints the vehicle position.
MARK II NAVIGATION SYSTEM DIAGNOSIS
The reduction of Nav system components also reduces the scope of diagnosis. The Nav
computer and Board monitor are the systems which must be considered for when diag-
nosing the total system.
The Mark II Navigation computer does not communicate with the DIS tester. Use the
onboard diagnostic screens outlined on the previous pages for navigation system specific
diagnosis.
Follow the fault symptom path of the DIS Diagnosis Program for detailed
diagnostic procedures for the board monitor and LCD panel.
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On-Board Monitor and Navigation Systems