Pin Assignment: X18303, 47-Pin (Black)

PIN ASSIGNMENT: X18303, 47-PIN (BLACK)

Pin	Type	Description
1	V	Terminal 30 for return pump
2	E/A	Diagnosis bus
3	---	---
4	V	Terminal 15
5	---	---
6	A	Power supply (5 volt) for DSC sensor
7	---	---
8	A	Processed wheel speed, rear right (to DME)
9	E	Signal from brake fluid level switch
10	A	Processed wheel speed, rear left (to instrument cluster)
11	E/A	PT CAN (high)
12	A	Processed wheel speed, front right (to telephone control unit), only USA without navigation system
13	---	---
14	A	Processed wheel speed, front left (to telephone control unit), only USA without navigation system
15	E/A	PT CAN (low)
16	M	Terminal 31 for solenoid valves in hydraulic unit
17	---	---
18	A	Power supply (5 volt) for brake pressure sensor 2
19	M	Earth for brake pressure sensor 2
20	E	Signal from brake pressure sensor 2
21	M	Earth for brake pressure sensor 1
22	A	Power supply (5 volt) for brake pressure sensor 1
23	E	Signal from brake pressure sensor 1
24	M	Earth activation for DSC sensor
25	E/A	CAN (low) to DSC sensor
26	---	---
27	E	Parking brake warning switch
28	---	---
29	E/A	CAN (high) to DSC sensor
30	---	---
31	---	---
32	V	Terminal 30 for solenoid valves
33	E	Signal from wheel speed sensor, front right
34	A	Power supply for wheel speed sensor, front right
35	---	---
36	A	Power supply for wheel speed sensor, rear left
37	E	Signal from wheel speed sensor, rear left
38	---	---
39	E	DSC button
40	E	RPA button (initialisation
41	E	Signal from brake light switch
42	E	Signal from wheel speed sensor, rear right
43	A	Power supply for wheel speed sensor, rear right
44	A	ABS indicator light
45	A	Power supply for wheel speed sensor, front left
46	---	Power supply for wheel speed sensor, front left
47	M	Terminal 31 for return pump
	A = Output
	E = Input
	E/A = Input and output
	M = Earth
	V = Supply
	For details of current pin assignment, please refer to BMW diagnostic system