V50 L5-2.4L VIN 39 B5244S7 (2005)
Communications Control Module: Testing and Inspection
Audio Module (AUD)
Audio Module (AUD)
Diagnostic functions
General
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output
signals.
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 permanent. Other faults are defined as intermittent.
If for some reason a fault disappears after the diagnostic trouble code (DTC) has been permanently stored in the control module, information about the
fault is stored in the control module.
If a fault is no longer permanent, the diagnostic trouble code (DTC) remains as intermittent.
Reading and erasing diagnostic trouble codes (DTCs)
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function.
Diagnostic trouble codes (DTCs) can only be erased once all the diagnostic trouble codes (DTCs) have been read off at least once.
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.
The codes contain information about the control module:
-
hardware P/N (control module without software)
-
hardware serial number (control module without software)
-
software P/N
-
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
frozen values.
Infotainment Control Module (ICM)
Infotainment Control Module (ICM)
Diagnostic functions
General
The control module has a built-in diagnostic system, Volvo Diagnostic, which continuously monitors internal functions as well as input and output
signals.
Diagnostic trouble codes (DTCs)
A diagnostic trouble code (DTC) is stored if the control module detects a fault. This control module can store up to six diagnostic trouble codes (DTCs),
the three first and the three latest.
If a fault disappears for any reason after the diagnostic trouble code (DTC) has been permanently stored in the control module, information about the
fault remains in the control module.
Reading and erasing diagnostic trouble codes (DTCs)
Stored diagnostic trouble codes (DTCs) can be read off and erased using this function. The on-board diagnostic (OBD) system can identify 35 different
