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.
↓
Detach clamp (VW 3093) from refrigerant hoses.
↓
Check actuation of temperature flap by positioning
motor for temperature flap -V68 (=>Page 18 , final
control diagnosis).
↓
Bring vehicleto a VW and
Audi air-conditioning serv‐
ice centre (fault in the refrig‐
erant circuit).
Continuation from Page 188 (compressor was deactivated during the refrigeration capacity test).
Read out fault memory (using V.A.G 1551) and locate and rectify all faults displayed =>Page 7 .
Erase fault memory, terminate output =>Page 26 .
Start engine.
Initiate self-diagnosis (enter address word "08", select function 08 "Read measured value block" and display
group 001) and confirm entry with Q key =>Page 4 .
Repeat refrigeration capacity test => Page 187 .
The requisite refrigeration capacity is attained (compressor was not switched off).
↓
yes
↓
no
↓
End
↓
As soon as the compressor is switched off (with compressor switched off), read
off the compressor shutoff criterion code from display zone 001.
↓
The following code is displayed in display zone 01 as a compressor shutoff criterion:
↓
Code "1"
for vehicles with pressure switch -F129 =>Page
70 (Perform electrical check on control unit -J293
for radiator fan)
↓
No compressor shutoff crite‐
rion was identified
↓
Perform electrical check on
radiator fan control unit -J293
perform =>Page 70
↓
other code =>Page 31 .
Continued from page 189 (compressor shut-off criterion code "1" for vehicles with pressure switch -F129).
Was the radiator fan -V7 switched to speed 2 during the test?
↓
yes
↓
no
↓
Replace air conditioner pressure
switch -F129.
↓
Repeat refrigeration capacity test =>
Page 187
↓
↓
Detach connector to air conditioner pressure switch -F129 and jumper
contacts 3 and 4 at connector
=> Page 135 .
↓
Fan -V7 is running at speed 2
Is the requisite refrigeration capacity
attained (compressor was not switch‐
ed off)?
↓
yes
↓
no
↓
yes
↓
End
↓
no
↓
Replace pressure switch -F129
and bring vehicle to a VW and Au‐
di air conditioning service centre
(fault in refrigerant circuit).
↓
Replace pressure switch
-F129.
↓
Repeat refrigeration capacity test
=> Page 187 .
↓
Perform electrical check on radiator
fan control unit -J293
perform =>Page 187 .
Audi A3 1997 ➤
Heating, Air Conditioner - Edition 06.2000
7.1 - Checking air conditioner refrigeration capacity 189
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