Data Link Connector: Description and Operation

Four Cylinder (8 valve engines)

All 1985-86 models are equipped with either CIS or CIS-E fuel injection. Most 1987 models are equipped with either CIS or CIS-E. Small numbers or 1987 and all 1988-90 models are equipped with the Digifant II engine management system. 1991 and 1992 models, except in California, are also equipped with the Digifant II system. 1991 and later California models are equipped with the Digifant I system.

Four Cylinder (16 valve engines)

All 1.8 liter 16 valve engines (engine code PL) are equipped with CIS-E fuel injection. All 2.0 liter 16 valve engines (engine code 9A) are equipped with the CIS-E Motronic engine management system.

VW Special Tool VAG 1551:

If available, fault codes may be retrieved with the VAG 1551 tester in either system


CIS-E

Diagnostic Connector Location:

The diagnostic connector, which is located under the trim panel at the center console, serves as the interface between the CIS-E Motronic control unit and the diagnostic equipment used for retrieving fault code information.

Fault Code At The Diagnostic Connector:

Fault codes may be retrieved with a "LED" test lamp.


Digifant

Tester VAG 1551 Hookup:

The diagnostic connector, which is located in the center console, serves as the interface between the Digifant I control unit and the diagnostic equipment used for retrieving fault code information.

Jumper Cable Assembly:

Fault codes may be retrieved using the special jumper cable # 357 971 514E.


NOTE: Not all California models are equipped with the fault diagnosis system, and there are some variations among those which are so equipped. It is recommended to consult with an authorized Volkswagen dealer for the most accurate and up to date information about a particular vehicle.