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V.A.G 1551 printer Possible causes of fault Fault remedy
01272 4123
Central flap positioning motor -V70
* Blocked or de-energised /SP
- Short circuit, open circuit in wiring
or fault in pin assignment of con‐
nectors between -V70 and
-E87.
Central flap stiff.
Positioning motor -V70 defective
- Use current flow diagram to locate
and eliminate short circuit, open cir‐
cuit in wiring or fault in pin assign‐
ment.
Check freedom of movement of the
central flap.
Check positioning motor -V70 (=>
Final control diagnosis, Page
18 ).
V.A.G 1551 printer Possible causes of fault Fault remedy
01273 4124
Fresh air blower -V2
* Control difference /SP
- Short circuit or open circuit be‐
tween -V2, blower control unit -
J126 and/or -E87.
Open circuit in the power supply or
earth connection to -J126.
Control unit -J126 defective.
Fresh air blower -V2 defective.
- Use current flow diagram to locate
and eliminate short circuit or open
circuit
Use current flow diagram to locate
and eliminate the open circuit:
Check control unit -J126 (=> Elec‐
trical check, Page 46 ).
Replace fresh air blower -V2.
01274 4131
Air flow flap positioning motor -V71 1)
* Blocked or de-energised /SP
- Short circuit, open circuit in wiring
or fault in pin assignment of con‐
nectors between -V71 and
-E87.
Air flow flap or fresh/recirculated air
flap stiff.
Positioning motor -V71 defective.
- Use current flow diagram to locate
and eliminate short circuit, open cir‐
cuit in wiring or fault in pin assign‐
ment.
Check freedom of movement of air
flow flap and fresh/recirculated air
flap.
Check positioning motor -V71 (=>
Final control diagnosis, Page
18 ).
1) This positioning motor actuates the fresh/recirculated air flap in addition to the air flow flap.
V.A.G 1551 printer Possible causes of fault Fault remedy
Operating and display unit -E87 up to index "E" (two displays)
01296
Centre vent temperature sender -
G191
* Short to earth /SP
* Open circuit/short to
positive /SP
- Operating and display unit -E87
wrongly coded.
Short circuit to earth on connector
B, contact 6 to -E87.
- Correct coding of operating and dis‐
play unit -E87 (Checking coding =>
Page 27 ).
Use current flow diagram to locate
and eliminate short circuit
(cont.)
▼
Note:
In vehicles with an operating and display unit -E87 up to index "E" no sender for the venting temperature -G191
is installed.
V.A.G 1551 printer Possible causes of fault Fault remedy
Operating and display unit -E87 with index "M" or "N" (two displays)
01296
Centre vent temperature sender -
G191
* Short to earth /SP
* Open circuit/short to
positive /SP
▪ Vehicles without map-controlled
cooling
Short circuit to earth on connector
B, contact 6 to -E87.
Operating and display unit -E87 in‐
correctly coded (sender -G191 is
not installed in Audi A3 without
map-controlled cooling).
Use current flow diagram to locate
and eliminate short circuit
Correctly code operating and display
unit -E87 (Checking coding => Page
27 ).
Audi A3 1997 ➤
Heating, Air Conditioner - Edition 06.2000
16 01 - Self-diagnosis, Electrical check
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