BMW i3 Technical Training Manual page 72

I01￿General￿Vehicle￿Electronics
5.￿Wash/wipe￿System
Index
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2
3
4
5
6
7
8
9
10
11
12
1
The￿local￿interconnect￿network￿bus￿connection￿for￿the￿BDC￿is￿always￿established￿for￿the￿wiper￿motor
on￿the￿driver's￿side￿(Master￿Control￿Unit).￿A￿I01￿with￿left-hand￿drive￿is￿shown￿here.
5.3.￿System￿components
In￿the￿I01￿a￿wiper￿motor￿with￿integrated￿control￿unit￿electronics￿including￿two￿Local￿Interconnect
Network￿interfaces￿is￿used.￿The￿wipe￿request￿and￿driving￿speed￿is￿transmitted￿to￿the￿control￿unit￿of￿the
wiper￿motor￿on￿the￿driver's￿side￿(master)￿via￿Local￿Interconnect￿Network￿by￿the￿BDC.￿Via￿another￿local
interconnect￿network￿bus￿the￿master￿control￿unit￿then￿activates￿the￿control￿unit￿of￿the￿wiper￿motor￿on
the￿passenger's￿side.
The￿wiper￿motor￿is￿a￿12 V￿reverse￿motor￿with￿a￿transmission.￿The￿control￿unit,￿the￿wiper￿motor￿and￿the
transmission￿form￿one￿replaceable￿unit.￿This￿wiper￿motor￿unit￿comprises:
• A￿permanently￿excited￿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￿done￿in￿the
Body￿Domain￿Controller.
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Explanation
Washer￿fluid￿level￿switch
Electric￿motor,￿windshield￿washer￿pump
1
Wiper￿motor,￿left ￿(Master￿CU)
Heated￿washer￿jet,￿left
Wiper￿motor,￿right
Heated￿washer￿jet,￿right
Body￿Domain￿Controller￿(BDC)
Fuses￿in￿the￿power￿distribution￿box￿in￿the￿passenger￿compartment
Wiper￿motor,￿rear
Steering￿column￿switch￿cluster￿(SZL)
Instrument￿cluster￿(KOMBI)
Rain‐light‐solar-condensation￿sensor