A6 Quattro Wagon V6-2.8L (AFC) (1995)
Data Link Connector: Testing and Inspection
PROCEDURE
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Check for voltage supply at Data Link Connector (DLC) A (Black) in vehicle, observe polarity while performing this check:
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Terminal 1 goes to Battery negative (-)
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Terminal 2 goes to Battery positive (+) (fuse 19)
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If battery voltage is not obtained, check wiring using wiring diagram, repair or replace as necessary.
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Check wiring for continuity between ECM and DLC.
DLC connector B (White)
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Terminal 1 goes to C 13 of the ECM
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Terminal 2 goes to C 12 of the ECM
DLC connector C (Blue)
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Terminal 2 goes to C 14 of the ECM
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If there is no continuity, check wiring using wiring diagram, repair or replace as necessary.