| Characteristics of the self-diagnosis |
| The control unit for the direct injection and diesel preheating system is provided with a fault memory. |
| When there is a fault in any of the sensors or components under supervision, the fault is memorised, together with the kind of fault it is, in the fault memory. |
| Temporary faults (sporadic) are printed with the indication that it is a “sporadic fault”. The displays shows such faults with the additional indication “/SP”. Sporadic faults might be caused by a loose contact or temporary breakage of a cable. If the sporadic fault does not reoccur in 50 starts of the engine, it is deleted from the memory. |
| If faults are detected that affect the behaviour of the vehicle, the preheating time warning light will flash. |
| Memorised faults can be read with the -VAG 1551- or -VAG 1552- units → Chapter. |
| Once the fault/s have been eliminated, the breakdown memory should be cleared → Chapter. |
Note! | For general information on the self-diagnosis, see the instructions manuals of the -VAG 1551- and -VAG 1552- units. |
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