Audi A3 1997 - Page 23

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V.A.G 1551 printer Possible causes of fault Fault remedy
▪ Vehicles with map-controlled
coding
Short circuit or open circuit in wiring
between -G191 and
-E87.
Sender -G191 defective.
Use current flow diagram to locate
and eliminate short circuit or open cir‐
cuit
Checksender -G191 (=>Electrical
check, Page 46 ).
(cont.)
▼
V.A.G 1551 printer Possible causes of fault Fault remedy
Operating and display unit -E87 as of index "H" except index "M" or
"N" (one display)
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 11 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 ).
▪ Vehicles with map-controlled
coding
Short circuit or open circuit in wiring
between -G191 and
-E87.
Sender -G191 defective.
Use current flow diagram to locate
and eliminate short circuit or open cir‐
cuit
Check sender -G191 (=>Electrical
check, Page 46 ).
V.A.G 1551 printer Possible causes of fault Fault remedy
01297
Footwell vent temperature sender -
G192
* Short to earth /SP
* Open circuit/short to
positive /SP
- Short circuit or open circuit in wir‐
ing between -G192 and -E87.
Sender -G192 defective.
- Use current flow diagram to locate
and eliminate short circuit or open cir‐
cuit
Check sender -G192 (=>Electrical
check, Page 46 ).
01582
Signal for refrigerant temperature1
* Implausible signal /SP
* Open circuit/short to
positive /SP
- Open circuit or short in wiring be‐
tween dash panel insert and -E87.
Dash panel insert defective.
- Use current flow diagram to locate
and eliminate short circuit, open cir‐
cuit in wiring or fault in pin assign‐
ment.
Checksignal from dash panel insert
(=> Reading measured value block,
Page 31 ).
Notes:
◆ The refrigerant temperature is calculated by the dash panel insert and transferred to the operating and
display unit -E87. If the refrigerant temperature exceeds 118 °C, the dash panel insert switches the output
to earth and -E87 switches off the air-conditioner magnetic clutch -N25.
◆ The fault "signal for refrigerant temperature" is only detected by the operating and display units with one
display.
V.A.G 1551 printer Possible causes of fault Fault remedy
65535
Control unit (-E87)
* Defective
- Open circuit, contact resistance or loose
contact in wiring (terminal 15 or 31) to -E87.
Operating and display unit -E87 defective.
- Use current flow diagram to locate and elim‐
inate fault in wiring to -E87.
Renew operating and display unit -E87.
Audi A3 1997 ➤
Heating, Air Conditioner - Edition 06.2000
4.1 - Fault table 17