Left front door control unit, component description

P72.29-2640-04

N69/1 Door control module front left

Location

The left front door control unit is located on the door module behind the door trim.

Task

The left front door control unit has the following tasks:

 Reading in of sensors, pickups and signals

 Evaluation of input factors

 Controlling function sequences

 Actuation of components

Reading in of sensors, pickups and signals

The input factors are read in with the following connections:

 Direct line

 Interior CAN

Direct line

The following switches and sensors are read in directly via a direct line:

- Left front IR receiver (A26/1)

- Mirror adjustment up/down potentiometer (M21/1r2) (with code (275) Memory package (driver seat, steering column, mirror ))

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- Mirror adjustment in/out potentiometer (M21/1r3) (with code (275) Memory package (driver seat, steering column, mirror ))

- Driver-side power window switch group (S20/1)
- Left front power window switch (S20/1s1)

- Right front power window switch (S20/1s2)

- Left front door seat adjustment switch group (Memory) (S91/2)
- Seat fore/aft switch (S91/2s1)

- Steering column up/down and forward/back switch (S91/2s13)

- Memory button 1, 2, 3 switch (S91/2s14)

- Rear seat height switch (S91/2s2)

- Front seat height switch (S91/2s3)

- Head restraint raise/lower switch (S91/2s4)

- Backrest switch (S91/2s5)

- Memory switch (S91/2s9)

(with code (275) Memory package (driver seat, steering column, mirrors))

 The left front door control unit supplies the connected controls with power from circuit 58d.

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Interior CAN

The left front door control unit reads in function-relevant information via the interior CAN.

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.

Controlling function sequences

The left front door control unit controls the following function sequences:

- Opening and closing front side window

- Outside mirror adjustment

Actuation of components

Components are actuated with the following lines:

 Direct line

 Interior CAN

Direct line

The following components are actuated via a direct line:

- Left outside mirror turn signal lamp (E6/5)

- left front door entrance and exit lamp (E17/3)

- Left front power window motor (M10/3)

- Left front door CL [ZV] motor (M14/6)

- Left electrically adjustable and heated outside mirror (M21/1)
- Mirror up/down adjustment motor (M21/1m1)

- Mirror adjustment in/out motor (M21/1m2)

- Power folding mirror (M21/1m3)
(with code (500) Left/right folding outside mirror)

- Automatic mirror dimming (M21/1h1) (with code (249) Automatically dimming inside rearview mirror and outside mirror (driver))

- Mirror heater (M21/1r1)

Interior CAN

The left front door control unit transmits requests fur function-relevant actuations via interior CAN.