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Electrical function diagram for Pre-Safe system - PE91.40-U-2051-99RAA

Code Designation Position
1 Vehicle dynamics, status 6 J
10 Battery, status 12 F
11 PRE-SAFE® fault, message 12 D
2 Seat belt buckle and seat belt reminder warning switch, status 3 E
2 Seat belt buckle and seat belt reminder warning switch, status 5 J
3 PRE-SAFE® situation detected, signal 9 F
3 PRE-SAFE® situation detected, signal 13 H
3 PRE-SAFE® situation detected, signal 17 D
3 PRE-SAFE® situation detected, signal 23 H
3 PRE-SAFE® situation detected, signal 25 E
4 Front passenger seat occupation, status 9 E
4 Front passenger seat occupation, status 23 H
5 Seat adjustment motors, actuation 21 K
6 Tilting/sliding roof motor, actuation 16 H
7 Power window motor, actuation 15 B
7 Power window motor, actuation 23 B
8 Manual adjustment, request 12 J
8 Manual adjustment, request 18 B
8 Manual adjustment, request 24 K
8 Manual adjustment, request 26 B
9 ESP OFF, request 9 E
9 ESP OFF, request 10 H
A1 Instrument cluster 11 B
A76 Left front reversible emergency tensioning retractor 5 J
A76/1 Right front reversible emergency tensioning retractor 5 J
CAN B Interior CAN 8 D
CAN B Interior CAN 9 H
CAN B Interior CAN 11 D
CAN B Interior CAN 12 H
CAN B Interior CAN 13 G
CAN B Interior CAN 13 F
CAN B Interior CAN 13 E
CAN B Interior CAN 20 G
CAN B Interior CAN 20 F
CAN C Engine compartment CAN 3 K
CAN C Engine compartment CAN 6 F
CAN C Engine compartment CAN 6 G
CAN C Engine compartment CAN 7 K
Code 242 Electrically adjustable front passenger seat with memory function 18 J
Code 413 Panoramic glass sunroof with top sliding sunroof 14 J
Code 414 Electric glass tilting/sliding roof 16 J
M10/3 Left front power window motor 14 A
M10/4 Right front power window motor 14 B
M10/5 Left rear power window motor 22 A
M10/6 Right rear power window motor 22 B
M12 Tilting/sliding roof (SR [SHD]) drive unit 17 K
M12/6 Drive unit 1, panoramic sliding roof 15 K
M12/7 Drive unit 2, panoramic sliding roof 15 K
M28/1 Seat fore/aft adjustment motor, front passenger 20 K
M28/2 Rear seat height adjustment motor, front passenger 20 K
M28/3 Front seat height adjustment motor, front passenger 20 K
M28/5 Backrest angle adjustment motor, front passenger 20 L
N10 Front SAM control unit 24 B
N2/7 Restraint systems control unit 2 E
N32/2 Front passenger front seat adjustment control unit with memory 22 J
N47-5 ESP control unit 9 J
N69/1 Left front door control unit 16 B
N69/2 Right front door control unit 16 B
N70 Overhead control panel control unit 12 J
N70s1 Roof switch 11 J
N72/1 Upper control panel control unit 8 B
N72/1s1 ESP OFF switch 8 B
N93 Central gateway control unit 10 E
S20/1 Power window and outside mirror adjustment switch group, driver 18 B
S21/2 Front passenger power window switch 18 B
S21/3 Left rear power window switch 27 B
S21/4 Right rear power window switch 27 B
S68/1 Driver seat belt buckle and seat belt warning switch 2 C
S68/2 Front passenger seat belt buckle and seat belt warning switch 2 D
S92 Front passenger seat with memory adjustment switch group 26 J
Fig 1: Pre-Safe System Electrical Function Diagram (1 Of 2)
G10123163Courtesy of MERCEDES-BENZ USA
Fig 2: Pre-Safe System Electrical Function Diagram (2 Of 2)
G10123164Courtesy of MERCEDES-BENZ USA