S80 T6 L6-2.8L Turbo VIN 90 B6284T (1999)
Communications Control Module: Description and Operation
AUM Diagnostic Functions
AUM diagnostic functions
General
The control unit has built-in diagnostics, Volvo Diagnostics, that continually monitor the control unit and the input and output signals.
Diagnostic trouble codes
If the control unit detects an error, it stores a diagnostic trouble code. There are 36 diagnostic trouble codes in total. An error that was detected the last
time the engine was running is defined as permanent. Other detected errors are defined as intermittent.
Reading and erasing diagnostic trouble codes
Stored diagnostic trouble codes can be read and erased using this facility.
Erasing diagnostic trouble codes can only be done when all the diagnostic trouble codes have been read at least once.
Reading and erasing the user information
Stored user information can be read and erased using this facility.
-4201 Focusing error
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CD inserted the wrong way
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Condensation in CD-player or on disc
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Faulty CD
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Faulty CD player
-4203 Servo error
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Read-out error in CD player
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Faulty CD
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Faulty CD player
-42F1 Disc feed error
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Dirt in CD compartment
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Faulty CD
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Faulty CD player
-42F3 Pick-up error
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Faulty CD player
-4301 Focusing error
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Condensation on MiniDisc or in MiniDisc player
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Faulty MiniDisc
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Faulty MiniDisc player
-4303 Servo error
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Read-out error in MiniDisc player
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Faulty MiniDisc
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Faulty MiniDisc player
-43F1 Disc feed error
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Dirt in MiniDisc player
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Faulty MiniDisc
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Faulty MiniDisc player
-43F3 Pick-up error
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Faulty MiniDisc player
-4401 Focusing error
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CD inserted the wrong way
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Condensation on CD or in 4-disc CD changer
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Faulty CD
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Faulty 4-disc CD changer
