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Home >> BMW >> 2020 >> M4 Base, 2D Convertible, Standard Trans >> Repair and Diagnosis (Single Page) >> Quick Lookups >> Wiring Diagrams >> Connector End Views (F83) >> Connector List >> Convertible-Top Module A120*3B Connector End View
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Convertible-Top Module A120*3B Connector End View

Fig 1: Convertible-Top Module A120*3B Connector End View
G11225900Courtesy of BMW OF NORTH AMERICA, INC.
Pin Assignments At Plug Connector A120*3B

Pin Type Description /Signal type Connection /Measuring information
1 E Supply, terminal 15 Fuse F143
2 M Ground Ground point
3 E Switch signal, interior lighting Roof function centre
4 -- Not used  
5 -- Not used  
6 -- Not used  
7 -- Not used  
8 -- Not used  
9 -- Not used  
10 -- Not used  
11 -- Not used  
12 A Aerial diversity changeover Left aerial amplifier AM/FM Right aerial amplifier FM
13 E Switch signal Hardtop operating unit
14 E Switch signal Hardtop operating unit
15 A Locator lighting Switch, loading aid
16 A LED activation Switch, loading aid
17 E Switch signal Automatic soft-close drive, left
18 E Switch signal Automatic soft close drive, right
19 E Switch signal Automatic soft-close drive, left
20 E Switch signal Automatic soft close drive, right
21 M Ground Ground point
22 E Power supply, terminal 30B Fuse F141
23 A Activation Automatic soft-close drive, left Automatic soft-close drive, left
24 M Ground Automatic soft-close drive, left Automatic soft close drive, right
25 A Activation Automatic soft close drive, right Automatic soft close drive, right
26 A Supply Micro-switch, left-hand interlocking ring buckle closed
27 A Supply Micro switch, cowl panel reached
28 A Supply, Hall sensor Hall effect sensor, bottom luggage compartment partition
29 A Supply Microswitch, hardtop loading position
30 A Supply, Hall sensor Left Roof package stored hall effect sensor
31 -- Not used  
32 -- Not used  
33 -- Not used  
34 E Switch signal Micro-switch, left-hand interlocking ring buckle closed
35 E Switch signal Micro switch, cowl panel reached
36 E Hall sensor signal Hall effect sensor, bottom luggage compartment partition
37 E Switch signal Microswitch, hardtop loading position
38 E Hall sensor signal Left Roof package stored hall effect sensor
39 E Switch signal Switch, loading aid
40 E/A Bus signal K-CAN2 bus
41 E/A Bus signal K-CAN2 bus