Electromechanical Parking Brake Control Module -J540-, Connector Views

30-Pin Connector -T30A- D 

Courtesy of AUDI

T30A (A)	Designation
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8	Electro-mechanical Parking Brake Indicator Lamp K213 in Electro-Mechanical Parking Brake Button E538
9	Mechanical Parking Brake Button E538
10	Mechanical Parking Brake Button E538
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12	Right Parking Brake Motor V283
13	Terminal 30, from Fuse Carrier 1 ST1 in Fuse Panel D SD
14	Left Parking Brake Motor V282
15	Terminal 30, from Fuse Carrier 1 ST1 in Fuse Panel D SD
16	CAN-Bus suspension sensor High, to B663 Suspension sensor CAN bus high connection (in main wiring harness) (1) B773 Suspension sensor CAN bus high connection 2 (in main wiring harness) (2)
17	CAN-Bus suspension sensor Low, to B664 Suspension sensor CAN bus low connection (in main wiring harness) (1) B783 Suspension sensor CAN bus low connection 2 (in main wiring harness) (2)
18	Mechanical Parking Brake Button E538
19	Mechanical Parking Brake Button E538
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22	Terminal 15, from Fuse Carrier 2ST2 in Fuse Panel D SD
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27	Right Parking Brake Motor V283
28	Terminal 31, to 758 Ground Connection 3 (on Center Tunnel)
29	Left Parking Brake Motor V282
30	Terminal 31, to 758 Ground Connection 3 (on Center Tunnel)
(1) Models Without Electronic Damping Control Module (2) Models With Electronic Damping Control Module