BMW G12 2015, Техническое учебное пособие

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G12�General�Vehicle�Electronics
3.�Washer/wiper�System
26
Index Explanation
1 Outside�temperature�sensor
2 Washer�fluid�level�switch
3 Washer�pump�for�headlight�cleaning�system
4 Electric�motor,�windscreen�washer�pump
5 Fuses�in�the�power�distribution�box,�front�right
6 Body�Domain�Controller�(BDC)
7 Steering�column�switch�cluster�(SZL)
8 Instrument�cluster�(KOMBI)
9 Rain‐light‐solar-condensation�sensor
10 Wiper�motor
11 Heated�washer�jet,�left
12 Heated�washer�jet,�center
13 Heated�washer�jet,�right
The�wiper�motor�is�a�12 V�motor�with�a�transmission.�The�control�unit,�the�wiper�motor�and�the
transmission�form�one�replaceable�unit.�This�wiper�motor�unit�comprises:
• A�permanent�magnet,�direct�current�motor�with�attached�reduction�gear
• Control�unit�electronics�with�eccentric�shaft�sensor�and�suppressor�components�with
attached�plug�connection
The�control�unit�in�the�wiper�motor�is�able�to�identify�the�following�faults:
• Faults�in�the�control�unit�electronics
• Short�circuits�at�the�motor�and�sensor�system
• Open�lines�at�the�motor�and�sensor�system
The�control�unit�in�the�wiper�motor�does�not�have�a�fault�memory.�The�fault�code�entry�is�stored�in�the
Body�Domain�Controller�(BDC).
The�heated�washer�jets�are�activated�by�the�Body�Domain�Controller.
The�Body�Domain�Controller�is�also�responsible�for�activation�of�the�windscreen�washer�pump�and
evaluation�of�the�washer�fluid�level�switch.