Discovery II (LT) V8-4.0L (2002)
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Navigation Module: Customer Interest
Navigation System - Non-Operational
No:
86/01/02/NAS
Ref:
Issue:
1
Date:
02/05/02
Navigation System Calibration
AFFECTED VEHICLE RANGE:
Discovery Series II (LT)
ALL HSE equipped with Becker NAV unit
Freelander (LN)
ALL HSE equipped with Becker NAV unit
SITUATION:
NON-OPERATIONAL NAV SYSTEM
For NAV unit replacement or when battery power has been interrupted, it will be necessary to calibrate or enter certain configuration features into the
Becker Navigational system to ensure proper operation.
RESOLUTION:
CAUTION:
All procedures outlined in this bulletin are required after NAV head unit replacement.
If power interruption (battery disconnection) occurs, the "CONFIGURATION" portions of this procedure will be required. See POWER INTERRUPT
REACTIVATION section.
NOTE:
Calibration of the Navigation System must be carried out after new unit replacement. Part of the calibration process is to follow a road route
approximately one mile long containing both left and right turns. The reason for the road test is to permit the NAV computer to identify and compare
road speed signals, satellite input and NAV CD parameters. Speeds between 10 mph and 40 mph should be maintained through the majority of the
course. While performing the initial calibration, the unit displays the "GPS MODULE ERROR" message intermittently. This is not a fault condition,
and will display until the NAV unit is able to obtain a firm positional fix from the GPS satellites.
CALIBRATE NAVIGATION SYSTEM
Carefully perform the calibration procedures outlined in this procedure whenever a new NAV unit is installed in a vehicle.
PARTS INFORMATION:
Customer Owned Navigation CD ROM
WARRANTY CLAIMS:
86.53.15
Time 0.80 hrs
Install new NAV unit and program
86.53.09
Time 0.10
Perform CONFIGURATION after power disconnect
Normal warranty policy and procedures apply.
PROCEDURE
ALMANAC LOAD
NOTE:
The more open the surrounding area is, the faster the system will acquire sufficient GPS satellite signals to begin calibration. To minimize the
calibration time, the vehicle should not be moved once the process has begun until the calibration ride.
NOTE:
When the security system RF receiver is active on Freelander models, it disrupts the GPS satellite signals and the almanac counter will not increment.
The RF receiver is deactivated when the ignition is on. During calibration, the ignition must remain in position "II" (ON). The vehicle CANNOT be