Ground and Ignition

The unit is grounded at pins 1 and 19 to grounding point G1 5 at the TSI socket. The pump is grounded through grounding point G2, which is located beside the battery tray.

Power supply pin 15 receives + 54 current from J31 via ignition.
The main relay passes current to pins 33 and 3 after being activated from pin 34.

The circuit is protected by a 30A fuse in the Antilock Brake System (ABS) main fuse box.

The following components are connected to grounding point G 15 at the TS I socket:
291 ABS Electronic Control Unit (ECU)
292 ABS main relay (pin 85)
382 TC-ABS ECU