Data Link Connector VAG 1551 Wiring, Checking: Notes

NOTE:

DLCs and the wiring connections -K- and -L- for all vehicle systems with On Board Diagnostic (OBD) are located in auxiliary relay panel I (in plenum chamber, left)

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For wiring colors and details of other vehicle systems connected to the white DLC

For testing, use digital multimeter Fluke 83 (1119) or equivalent, VW 1594 connector test kit, and VAG 1598 test box with VAG 1598/03 adapter harness.

-- Switch off ignition before testing wiring connections.

Black DLC, Power Supply

r	Terminal 1:	Ground
r	Terminal 2:	B+ (terminal 30) via fuse 21 (-S21-)

White DLC, Data Transfer

Terminal 1: not required for brake electronics

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Terminal 2: data line for "Rapid data transfer"

DLC wiring is routed via wiring connection -K- to the ABS control module -J104- (terminal 31

NOTE:

Disconnect the harness connector from ABS control module -J104- ABS CONTROL MODULE connect Test box: VAG1598 with Adapter: VAG1598/3 , and measure at appropriate test box sockets (

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Use digital multimeter: Fluke 83 (US 1119) or equivalent to check for open circuits, short circuits to positive (+) or short circuits to Ground.