Golf Mk4
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General to self-diagnosis
Features of self-diagnosis
The Simos control unit (J361) for the fuel injection and ignition system 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. After evaluating the information the engine control unit decides between 36 differing fault codes => Fault table Page 01-33 and stores these faults until the contents of the fault memory is erased. Faults which only occur sporadically will have the addendum "sporadic fault" on the print out. These faults will be indicated on the display by the addendum "/SP". The cause of sporadic faults can be e.g. a loose contact or a brief open circuit. If a sporadic fault does not occur again within 40 engine starts, it will be erased from the fault memory. The faults stored can be read-out with the fault reader V.A.G 1551 or the vehicle system tester V.A.G 1552 . The fault memory must be erased after the faults has been eliminated => Page 01-9 . Note: General information for self-diagnosis is in the fault reader V.A.G 1551 and the vehicle system tester V.A.G 1552 instruction manuals. |
