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Erasing fault memory > < Interrogating fault memory

Fabia Mk1

Fault table for immobiliser
   
Fault table for immobiliser
  Note
t  All the possible faults which can be detected by the vehicle system tester -V.A.G 1552- are listed below according to the 5-digit fault code.
t  If parts are output as faulty: First of all, test all the support cables, plug connections to these components as well as the earth cables of the system according to the current flow diagram. Replace component only if these tests do not reveal any fault. This applies in particular for faults that are output as “sporadically occurred” (SP) faults.
t  After repair always interrogate the fault memory using vehicle system tester -V.A.G 1552- and erase the memory.
t  All static and sporadic faults are stored in the fault memory. A fault is detected as static if it exists for at least 2 seconds. If the fault is then no longer present, it is stored as a sporadic (temporary) fault. “/SP” appears on the right of the display.
t  After switching on the ignition, all the faults which exist are set to sporadic and are not stored as static faults unless they continue to exist after completing the check.
t  If a sporadic fault no longer occurs during 50 driving cycles (ignition on for at least 5 minutes, road speed > 30 km/h), it is erased.
Readout on - V.A.G 1552 -Possible causes of faultPossible effectsRectifying fault
01128 
t  Wiring from reading coil to dash panel insert defective
t  Reading coil with cable defective
Engine does not start and warning light flashes
–  Check reading coil with wiring (visual inspection), if necessary replace reading coil.
–  Erase fault memory → Chapter and interrogate again → Chapter.
Immobilizer reading coil
 
01176Signal too low
t  Reader coil or cable defective (contact resistance or loose contact)
Engine does not start and warning light flashes
–  Check reading coil with wiring (visual inspection), if necessary replace reading coil.
Key 
 
not authorised
t  Electronics in ignition key (Transponder) missing or not operating
Engine does not start and warning light flashes
–  Replace ignition key and adapt all ignition keys → Chapter.
t  The mechanically correct ignition key not adjusted electronically
Engine does not start and warning light flashes
–  Re-adapt all ignition keys and check proper operation → Chapter.
01177not authorised
t  Engine control unit not adjusted
t  Data bus N.O.K.
Engine does not start and warning light flashes
–  Adapt engine control unit → Chapter.
–  Checking the data BUS → Chapter.
Engine control unit
 
01179incorrect
t  Key programming wrong
Warning lamp flashes rapidly
–  Re-adapt all ignition keys and check proper operation → Chapter.
Key programming
 
65535 
t  Control electronics in dash panel insert defective
Engine does not start and warning light comes on
–  replace dahspanel insert → Chapter.
Control unit defective
other fault codes if fault codes which are not listed in this fault table are displayed → Chapter.

   

Erasing fault memory > < Interrogating fault memory