| Features of self-diagnosis |
| The diesel direct injection system control unit -J248- is equipped with a fault memory. |
| If faults occur in the sensors and components being monitored, they will be stored in the fault memory together with an indication of the type of fault. |
| Faults which occur temporarily (sporadically), are printed out with the addendum “sporadic fault”. These faults are indicated on display by the addendum “/SP”. The cause of sporadic faults can be e.g. a loose contact or a temporarily open circuit. If a sporadic fault does not occur again within 50 engine starts, it will be cleared from the fault memory. |
| If faults are recognised which affect the driving behaviour, the glow period warning lamp flashes. |
| The stored faults can be read out with the fault reader -V.A.G 1551-, the vehicle system tester -V.A.G 1552- or the vehicle diagnosis, testing and information system -VAS 5051- → Chapter. |
| The fault memory must be erased after the faults have been eliminated → Chapter. |
Note | General information on self-diagnosis can be found in the instruction manuals for the fault reader -V.A.G 1551- and the vehicle system tester -V.A.G 1552-. |
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