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Self-diagnosis of radio systems (vehicles from 1998)
Fault table for radio systems
Notes:
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◆ The following table lists all the faults which can be recognised by the radio system and printed out by the V.A.G 1551. The faults are listed in order according to their 5-figure code numbers.
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◆ The fault code only appears on the printout.
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◆ Before replacing components found to be defective, use current flow diagram to check wiring and connectors to these components as well as earth connections.
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◆ On completion of repair work and system functional test, always interrogate fault memory again with fault reader V.A.G 1551 and erase it.
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◆ All static and sporadic faults are stored in the fault memory:
A fault is recognised as being static if it is present for at least 2 seconds. If a fault is then no longer present, it is stored as being sporadic and "/SP" appears on the right of the display.
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◆ After switching on ignition, all faults present are set to sporadic and only stored as being static if they are still present after checking.
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◆ Sporadic faults are erased if they do not re-occur in the course of 50 driving cycles (ignition on for at least 5 minutes, vehicle speed > 30 km/h).
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◆ The three-digit fault type code next to the fault code is a data code which can be ignored.
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Output on printer of
V.A.G 1551
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Possible cause of trouble
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Fault remedy
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00668
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Vehicle voltage terminal 30
- Signal too low*
*This fault may also be stored if starter has been operated for more than 10 seconds.
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- Battery flat/defective
- Short circuit in vehicle electrical system
- Battery voltage lower than 9.5 V
- Alternator defective
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- Charge/replace battery
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00849
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S-contact on
ignition/starter switch -D
- Open circuit
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- Ignition/starter switch -D defective
- Open circuit in wiring
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- Use current flow diagram to perform fault-finding
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Output on printer of
V.A.G 1551
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Possible cause of trouble
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Fault remedy
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00854
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Output radio display dash panel insert
- No communication 1)
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- Wiring damage
- Open circuit in wiring
- Dash panel insert defective
- Radio defective
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- Use current flow diagram to perform fault-finding
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1) Whether or not any faults are still present following fault elimination is not detected during self-diagnosis.
Therefore, whenever a fault has been eliminated and the fault memory erased, it is essential to check the function of the secondary display and then interrogate the fault memory again.
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Output on printer of
V.A.G 1551
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Possible cause of trouble
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Fault remedy
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00855
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Connection to CD changer
- No communication
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- Open circuit in wiring
- Voltage supply to CD changer interrupted
- CD changer -R41 defective
- Radio defective
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- Use current flow diagram to perform fault-finding
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Output on printer of
V.A.G 1551
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Possible cause of trouble
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Fault remedy
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00856
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Aerial on radio
- Short circuit
- Open circuit
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- Wiring damage
- Open circuit in wiring
- Short circuit in aerial wire
- Aerial wire not plugged in
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- Use current flow diagram to perform fault-finding
=> Current Flow Diagrams, Electrical Fault-finding and Fitting Locations binder
Eliminate open circuit in wiring
Check aerial wire
Check aerial
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01044
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Control unit
- Incorrectly encoded
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- Radio not encoded to match configuration in vehicle
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- Encode radio accordingly=>Seite 01-25
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65535
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Control unit
- Defective
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- Radio defective
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- Replace radio
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