Steering column electronics control unit J. Audi A3 ’04

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Control Units

Steering column electronics control unit J527

The design of the steering column electronics control unit J527 has been modified for use in the Audi A3 ’04.

It includes the following components:

All modules of the steering column electronics control unit J527 are arranged one above the other.

Replacement of individual modules demands extremely careful dismantling of the steering column electronics control unit J527.

– Mechanical ignition lock with immobilizer reading coil D2

– Steering column electronics J527 for signal conversion and processing of signals from drive system CAN and convenience CAN

– Equipment-specific control elements

– Coil connector with steering angle sender

G85

– Electric ignition key removal lock (for vehicles with automatic gearbox)

– LIN function for connection to steering wheel electronics module J453 and operating unit E221 in multifunction steering wheel

On vehicles with automatic gearbox, the electric ignition key removal lock N376 is also incorporated.

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Function Self-diagnosis

The task of the steering column electronics is to transmit information from operating elements such as turn signal indicators or wipers to the bus in the form of a CAN message and to read any incoming information.

Communication with the steering column electronics is effected by way of the data bus diagnostic interface J533 and the convenience CAN. The diagnostic functions for the steering column electronics control unit J527 can be found using address word

16 under "Steering wheel electronics".

Airbag coil connector/return ring with slip ring F138

Turn signal switch E2

Cruise control system switch E45

Steering column electronics control unit J527

Windscreen wiper switch E

Mount

Steering angle sender G85

Steering lock with ignition/ starter switch D

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