Shown: left front door, model 222.0, door trim removed |
N69/1 | Left front door control unit |
P72.29-2755-12
Location
The left front door control unit is located on the door module behind the door lining.
Task
The left front door control unit has the following tasks:
Reading in of sensors and signals
Evaluation of input factors
Actuation of components
Reading in of sensors and signals
The input factors are read in via the following connections:
Direct line
Left front door LIN (LIN B5)
Interior CAN (CAN B)
Direct line
The left front door control unit reads in the signals from the following components via direct lines:
Left front door safety catch microswitch (A85s1) (model 222 with code 883 (Power closing), model 217)
Left front door main catch microswitch (A85s2)
Left front door inside door handle microswitch (A85s3) (model 222 with code 883 (Power closing), model 217)
Left front door external operation microswitch (A85s4) (model 222 with code 883 (Power closing), model 217)
Left front door tweeter Hall sensor (H4/68) (with code 811 (Advanced Sound System) and code 877 (Ambient lighting))
Left front power window motor Hall sensor (M10/3) (up to model year 2018 (except model 222 with code Z11 (Left front power window for special protection)))
Left front door power closing actuator motor microswitch (M14/21s1) (model 222 with code 883 (Power closing), model 217)
Vertical inclination adjustment potentiometer (M21/1r2)
Horizontal inclination adjustment potentiometer (M21/1r3)
Left front seat armrest heating element temperature sensor (wR16/5b1) (with code 906 (Front armrest heater))
Trunk lid release button (S15/1) (left-hand drive vehicle, model 222 except code 881 (Remote trunk closing))
Driver trunk lid control button (S15/3) (left-hand drive vehicle, model 222 with code 881 (Remote trunk closing), model 217)
Passenger-side power window switch (S21/2) (right-hand drive vehicle)
Pressure switch for left front door hydraulic power window (S26/3) (model 222 with code Z11 (Left front power window for special protection))
Refueling intention detection switch (S62/20) (model 222.004/057/104/157/163/173)
Left front door central locking interior switch (S85/5):
Open central locking switch (S85/5s1)
Close central locking switch (S85/5s2)
Left front door LIN
The left front door control unit reads in the signals from the following components via the left front door LIN:
Driver-side power window and outside mirror adjustment switch group (S20) (left-hand drive vehicle):
Driver side power window switch (S20s1)
Passenger-side power window switch (S20s2)
Left rear power window switch (S20s3)
Right rear power window switch (S20s4)
Rear side window child safety lock switch (S20s5) (model 222)
Outside mirror fold-in/out switch (S20s6)
Left outside mirror adjustment switch (S20s7)
Right outside mirror adjustment switch (S20s8)
Outside mirror adjustment switch (S20s9)
Left front seat adjustment switch group (S22):
Left front head restraint adjustment switch (S22s1)
Left front seat inclination adjustment switch (S22s2)
Left front seat fore/aft adjustment switch (S22s3)
Left front seat height adjustment switch (S22s4)
Left front seat backrest adjustment switch (S22s5)
Left front memory function switch (S22s6) (model 222 with code 275 (Memory package), model 217)
Left front memory 1 switch S22s7 (model 222 with code 275 (Memory package), model 217)
Left front memory 2 switch S22s8 (model 222 with code 275 (Memory package), model 217)
Left front memory 3 switch S22s9 (model 222 with code 275 (Memory package), model 217)
Left or right seat adjustment switch (S22s10) (model 222 with code P64 (Memory package), model 217)
Left front seat cushion length switch (S22s11) (model 222 with code P64 (Memory package), model 217)
Left front seat heater switch (S22s12) (model 222 with code 401 (Seat climate control for driver and front passenger) or code 873 (Seat heater for driver and front passenger) or code 432 (Left and right dynamic multicontour seat), model 217)
Left front seat ventilation switch (S22s13) (with code 401 (Seat climate control for driver and front passenger))
Interior CAN
The left front door control unit reads in the following signals via the interior CAN:
Terminal status of terminal 15
'Reverse gear engaged' signal
CL locking unlocking/locking request
PRE-SAFE® adjustment request
Move to memory position request (model 222 with code 275 (Memory package), model 217)
Convenience feature request
Crash signal
Evaluation of input factors
The input factors that have been read in are evaluated by the integrated microprocessor and the relevant components are then actuated.
Actuation of components
The actuation of the components takes place via the following connections:
Direct line
Left front door LIN
Interior CAN
Direct line
The left front door control unit actuates the following components over direct lines:
Left front door central locking motor (A85m1)
Left front door additional door lock actuator motor (with code (A85m4) with code 885 Extended theft protection))
Left outside mirror turn signal lamp (E6/5)
Left front door exit and warning lamp (E173)
Left front door outer door handle illumination (E17/7) (with CODE 889 (KEYLESS-GO))
Left front door handle illumination (E17/11)
Left front door warning lamp (E17/19) (model 217)
Left front door ambiance illumination (E17/43) (with CODE 877 (Ambiance illumination))
Left front door handle ambiance illumination (E17/55) (with CODE 877 (Ambiance illumination))
Left front door pocket illumination (E23/1) (with code 877 (Ambiance illumination))
Left front door tweeter (with code 811 (Advanced Sound System) and code 877 (Ambient lighting))
Relay for left front power window hydraulic pump (K4/11) (model 222 with code Z11 (Left front power window for special protection))
Left front power window motor
Left front door power closing actuator motor (M14/21) (model 222 with code 883 (Power closing), model 217)
Left outside mirror (M21/1):
Left outside mirror ambient lamp (M21/1e1)
Left blind spot assist warning lamp (M21/1e2) (with code 237 (Active blind spot assist), code 22P (Lane tracking package) or code 23P (Driving assistance package))
Mirror dimming (M21/1h1) (with CODE 249 (Automatically dimming mirror))
Vertical inclination adjustment actuator motor (M21/1m1)
Horizontal inclination adjustment actuator motor (M21/1m2)
Outside mirror fold-in/fold-out electric motor (M21/1m3)
Mirror heater (M21/1r1)
Left front seat armrest heating element (R16/5) (with code 906 (Front armrest heater))
Valve unit for left front power window (Y69/1) (model 222 with code Z11 (Left front power window for special protection)):
Left front window 'Open' solenoid valve (Y69/1y1)
Left front window 'Close' solenoid valve (Y69/1y2)
The left front door control unit supplies the connected control elements with c. 58d.
Left front door LIN
The left front door control unit transmits the following signals via the left front door LIN:
Left or right outside mirror adjustment switch selection status indication
Status indication for rear side window child safety lock (model 222)
Interior CAN
The left front door control unit reads in the following signals via the interior CAN:
Door status (open/closed)
Adjusting right outside mirror request
Opening/closing request for power windows
Convenience feature mode (with CODE 889 (KEYLESS-GO))
Convenience feature direction (with CODE 889 (KEYLESS-GO))
Seat ventilation request with CODE 401 (Seat climate control for driver and front passenger))
Seat heater request (model 222 with code 401 (Seat climate control for driver and front passenger) or code 873 (Seat heater for driver and front passenger) or code 432 (Left and right dynamic multicontour seat), model 217)
Seat adjustment request