Volvo Workshop Manuals
XC90 AWD V8-4.4L VIN 85 B8444S (2005)
Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Antenna Control Module > Component Information > Description and Operation > System Overview > Page 15
Antenna Control 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. A fault which is detected in the most recent operating cycle is defined as
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 the control module identification
VIDA 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
Reading off the parameters
Using this function, the status or value of parameters can be read off. The presentation of the status or value can be obtained graphically or digitally. For
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