GF54.65-P-4004A Fault Analysis, Function

GF54.65-P-4004A Fault Analysis, Function
- with CODE (220a) Parktronic System (PTS)

The Parktronic system (PTS) distinguishes between a malfunction and a fault.

Function prerequisites:
- Circuit 15 ON,
- Sensors active.

Operational problem
If a malfunction occurs during operation, it is indicated by the lighting of the red segments and the frames of all the active warning indicators. There is no warning tone.

A malfunction can be caused by a defect in the sensors, the warning indicator, by the Parktronic control unit (N62), via a line discontinuity or a brief malfunction from outside (e.g. compressed-air hammer on a construction site, steam cleaner or an induction loop at a traffic light).

If a malfunction lasts less than t=2 minutes then it is not detected as a fault and is not stored in the fault memory.

Fault
If a fault is detected during a function test while driving, the next time the lower speed limit is dropped below the red bar graphs of the warning indicator are actuated and a warning chime is emitted for t=3 seconds.

If a malfunction exists for longer than t=2 minutes (for t=20 seconds when diagnosis is connected ), then it is detected as a fault and stored in the fault memory of the Parktronic control unit (N62).

The fault is displayed by the lighting up of the red segments of all the active warning indicators in conjunction with a warning chime for t=3seconds. After a fault display for t=20 s the warning displays are switched dark.

Fault in the data transfer to the warning indicator
The warning indicators and the corresponding lines cannot be checked by the Parktronic control unit (N62), as the data transfer only runs towards the warning indicators (no entry in the fault memory).

If a warning indicator does not receive any valid signals within t=0.5 seconds after switching on the ignition, the two red segments of the appropriate warning indicator light up, a warning chime is switched on for a duration of t=3 seconds and the warning indicator is switched off after t=20 seconds.

If errors occur during operation, then the last display is preserved until valid signals are received again.