90CS Quattro V6-2.8L (AFC) (1995)
ABS Control Module: Technical Service Bulletins
Data Link Connectors, Checking Wiring
Data Link Connectors (DLC), checking wiring
Notes:
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The DLCs and the wiring connections "K" and "L", for all vehicle systems with On Board Diagnostic (OBD) are located in relay carrier (in
plenum chamber, left).
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For wiring colors and details of other vehicle systems connected to the "white" DLC see Wiring Diagrams.
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For testing, use digital multimeter Fluke 83 (US 1119), auxiliary test set VAG 1594 and test box VAG 1598 with adapter harness VAG 1593/3.
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Switch off ignition before testing wiring connections.
DLC's In Fuse Panel
Black DLC
(Power supply)
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Terminal -1- (connected to Ground)
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Terminal -2- (B+, connected to terminal - 30 via fuse 21).
White DLC
(Data transmission)
^
Terminal -1-
is not required for brake electronics.
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Terminal -2-
Data line for "Rapid data transfer". The wiring from the DLC goes via wiring connection "K" to the ABS Control Module - J104 (terminal - 31
See Wiring Diagram).
Notes:
ABS ECM Connector - 35 Pin
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Disconnect wiring connector from ABS Control Module - J1O4 (See Repair Group 45), connect test box VAG 1598 with adapter harness VAG
1598/3 and take test readings at appropriate sockets of test box (See Wiring Diagram).