BMW G12 2015 Technical Training Manual page 30

G12￿General￿Vehicle￿Electronics
3.￿Washer/wiper￿System
Index
1
2
3
4
5
6
7
8
9
10
11
12
13
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.
26
Explanation
Outside￿temperature￿sensor
Washer￿fluid￿level￿switch
Washer￿pump￿for￿headlight￿cleaning￿system
Electric￿motor,￿windscreen￿washer￿pump
Fuses￿in￿the￿power￿distribution￿box,￿front￿right
Body￿Domain￿Controller￿(BDC)
Steering￿column￿switch￿cluster￿(SZL)
Instrument￿cluster￿(KOMBI)
Rain‐light‐solar-condensation￿sensor
Wiper￿motor
Heated￿washer￿jet,￿left
Heated￿washer￿jet,￿center
Heated￿washer￿jet,￿right