Volvo Workshop Manuals
XC90 FWD L6-3.2L VIN 98 B6324S (2007)
Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Global Positioning System Module > Component Information > Description and Operation > System Overview > Page 301
Global Positioning System Module: Description and Operation
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output
Diagnostic trouble codes (DTCs)
A diagnostic trouble code (DTC) is stored if the control module detects a fault.
Reading and erasing diagnostic trouble codes (DTCs)
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Note! Certain functions are unavailable until the diagnostic trouble codes (DTCs) have been erased.
Reading off input and output signals
This function can be used to continuously read off the values and status of the control module's input and output signals.
The following parameters can be read off:
GPS Received position, longitude. Indicates the received longitudinal position.
GPS Received position, latitude. Indicates the received latitudinal position.
The following responses may be obtained when reading the available GPS satellites:
Not available - no contact with satellites.
No fix - contact with satellites but unable to fix a position.
2D Fix- contact with satellites, two-dimensional position fixing.
3D Fix- contact with satellites, three-dimensional position fixing.
Reading off the control module identification
The diagnostic tool identifies control modules by reading off a number of codes from the control module memory.
hardware P/N (control module without software)
hardware serial number (control module without software)
diagnostic software P/N
Reading off extended fault-tracing information
This function can be used to read parameters, status identifiers and counters stored at the same time as a diagnostic trouble code (DTC). These are called
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