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 (On Board Diagnostic) are located in auxiliary relay panel I (in plenum chamber, left) => Wiring Diagram

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For wiring colors and details of other vehicle systems connected to the white DLC => Wiring Diagram

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

• Terminal 1: Ground
• Terminal 2: B+ (terminal 30) via fuse 19 (-S19-)

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 (w/EDL) -J104- (terminal 31).

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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.