Requirements for test

An Automatic test sequence must first be performed to establish that any malfunctions present in the transmission and engine control modules can only originate from the ABS/EDL.

Connect VAG 1551 scan tool and select address word 00 with ignition switched on. See VAG 1551 SCAN TOOL, CONNECTING AND ENTERING ADDRESS WORD .
After completing the Electrical testing, check and erase the DTC memories of the transmission and engine control modules.

Fig 1: Identifying ABS Control Module Multi-Pin Connector Terminals

Courtesy of AUDI OF AMERICA, INC.

The multi-pin connector between the wiring harness and ABS control module (w/EDL) -J104- must be in proper condition, without bent, broken or corroded contacts. Replace any damaged contacts using VAS 1978 wiring repair kit.

NOTE: The instructions supplied with VAS 1978 wiring repair kit normally do not permit repairs to the wiring of the ABS and its associated systems. However, this only applies to the screened wiring in the systems.

Switch ignition and electrical consumers off before commencing the check (headlights, lighting, fan, etc.).