Audi A8 1994 - Final Control Diagnosis

Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
- Defective component
- Implausible signal
- Sender -G254 defective - Replace sender -G254
=> Electrical System; Repair
Group 94; Servicing automat‐
ic parking system; Removing
and installing automatic park‐
ing system sender, front Serv‐
icing automatic parking sys‐
tem; Removing and installing
automatic parking system
sender, front
Readout on VAS 5051 Possible cause of trouble Remedy
01629
Automatic parking system sender, front left -G255
- Short to positive
- Open circuit/short to earth
- Open circuit in wiring or
short between sender -
G255 and control unit
- Use current flow diagram to
perform fault-finding
=> Current Flow Diagrams,
Electrical Fault-finding and
Fitting Locations binder
- Defective component
- Implausible signal
- Sender -G255 defective - Replace sender -G255
=> Electrical System; Repair
Group 94; Servicing automat‐
ic parking system; Removing
and installing automatic park‐
ing system sender, front Serv‐
icing automatic parking sys‐
tem; Removing and installing
automatic parking system
sender, front
65535
Control unit defective
- Automatic parking system
control unit -J446 defective
- Replace control unit
=> Electrical System; Repair
Group 94; Servicing automat‐
ic headlight range control; Re‐
moving and installing head‐
light range control unit -J431
Servicing automatic headlight
range control; Removing and
installing headlight range con‐
trol unit -J431
4.6 - Final control diagnosis
Notes:
◆ Final control diagnosis can only be performed with engine stopped and ignition switched on.
◆ If final control diagnosis detects a fault, locate and eliminate cause of problem.
In the "Final control diagnosis" function the front and rear warning buzzers are actuated:
Actuation sequence
1 Front warning buzzer
2 Rear warning buzzer
Audi A8 1994 ➤
Electrical system Self-diagnosis 02.99 ➤ - Edition 05.2002
126 01 - Self-diagnosis