| Features of self-diagnosis |
| The diesel direct injection system control unit is equipped with a fault memory. |
| The engine control unit, after evaluating the information received, differentiates between more than 50 different faults ⇒ Fault table, → Chapter and stores these until the contents of the fault memory are erased. |
| Faults which only occur sporadically are indicated as “sporadic fault” on the print out. These faults will be indicated on the display as “/SP”. The cause of sporadic faults can be e.g. a loose contact or an intermittent open circuit. If a sporadic fault does not occur again within 50 engine starts, it will be erased from the fault memory. |
| If faults affecting driveability are detected, the glow period warning lamp flashes. |
| The advantages of self-diagnosis can only be fully exploited by using the vehicle diagnostic, testing and information system -VAS 5051- or the vehicle diagnosis and service information system -VAS 5052- in operating mode “Rapid data transfer”. |
| The fault memory must be erased after the faults have been eliminated. |
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