5A Brief power supply interruption

Possible cause(s) of fault:

• The power supply of the steering-angle sensor via terminal 30 is interrupted or was briefly interrupted.
  

Storage condition(s):

• On 4WD vehicles, if the DSC has not been provided with a current steering-wheel position after ignition on, the DSC becomes inactive, the ABS, DSC and the general brake warning lamps light up permanently and the fault is entered.
  If the steering-angle sensor was able to determine the current steering-wheel position with parameters, the DSC becomes active and the warning lamps go out. However, the fault code memory entry is retained.
  

Troubleshooting procedure:

• If the fault is not current and has not occurred a number of times, it can be ignored.
  
• If the DSC outputs this fault following a power supply interruption, turning the steering wheel from stop to stop or brief straight-ahead driving (approx. 50 metres) enables the steering-angle sensor to determine its current steering position.
  
• If the warning lamps light up after every ignition on or the fault has occurred a number of times, the troubleshooting in the steering-angle sensor must be continued.
  Checking the power supply (terminal 30) of the steering-angle sensor In test module B3714_00001 at (steering-angle sensor/supply), there is an interruption counter for terminal 30.
  

Note:

• Wire tests and checks for loose contacts are possible via ”Pre-set measurements”.