Sensor Test Navigation System

The sensor test can be selected as follows:

Fig. 1

Fig. 2

1	Detected position (0D,2D,3D)
2	Number of satellites currently received by GPS
3	Degree of longitude
4	Degree of latitude
5	Altitude
6	Received satellites (explanation to 8)
7	Satellites existing but not received (explanation to 8)
8	Position and number of satellites

Fig. 3

1	GPS time initialisation (transfers BC time to GPS receiver)
2	NAC computer RAM-test, ROM-version
3	VICS menu
4	Special diagnosis (Fig. 5)

Concerning 1: After replacing the GPS receiver, the initialization time can be shortened when the time is transferred from BC to GPS.

Fig. 4

Fig. 5

Fig. 6

GPS test

Vehicle outside with clear upward view

Display Fig. 2	Setpoint	If not OK: carry out the following test
1	2D or 3D	Test module GPS test
2	>3	Test module GPS test
3	Degree of longitude display	Test module GPS test
4	Degree of latitude display	Test module GPS test
5	Altitude display	Test module GPS test
6
7
8	>3 satellites	Test module GPS test

Drive several small diameter circles with the vehicle outdoors

Observe voltage change from gyro!

Display Fig. 6	Setpoint	If not OK: carry out the following test
1
2	When stationary and when driving straight ahead: 2500mV+/-500mV;while taking a corner: outside above-specified range.	If value not OK: Replace navigation computer.
3
4

Only with VICS receiver installed

Display Fig. 4	Setpoint	If not OK: carry out the following test
1	OK	Test module, VICS receiver
2	Version number
3	Frequency	Test module, VICS receiver
4	Receiving level	Test module, VICS receiver

For 3 and 4: Display for VICS reception only (only in served area).