Audi A3 1997 Manual page 57

Notes:
◆ Earth applied e.g. to connector D contact 15.
◆ The voltage at terminal 58s is governed by the setting of the illumination control.
Select measuring range on hand-held multimeter V.A.G 1526:
Voltage measurement (20V =)
- Adapter cable V.A.G 1598/11 connected
Test step V.A.G 1598
socket
1.10 45 and
earth
1.11 45 and
earth
Notes:
◆ Earth applied e.g. to connector D contact 15.
◆ The voltage at terminal 58d is generated as a square-wave signal by the dash panel insert. The brightness
of -E87 displays is determined by the actuation time. The measuring instrument displays the average value.
◆ The actuation time at terminal 58d is governed by the illumination control setting and the brightness level
determined by the photosensor in the dash panel insert.
Test step 2
Temperature sensor/sender
Select measuring range on hand-held multimeter V.A.G 1526:
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
Resistance measurement (20 kω)
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
- Adapter cable V.A.G 1598/11 connected
with respect to the correctness of information in this document. Copyright by AUDI AG.
Test step V.A.G 1598
socket
2.1 48
and
49
2.2 50
and
49
2.3 47
and
49
2.4 25
and
49
Testing of
Terminal 58d on -
E87
Terminal 58d on -
E87
Testing of ▪ Test conditions
- Additional opera‐
tions
Ambient tempera‐ - Measure tempera‐
ture sensor -G17 ture at the sensor fit‐
ting location.
Dash panel temper‐ - Measure tempera‐
ature sensor -G56 ture at the sensor fit‐
ting location.
Temperature sen‐ - Measure tempera‐
sor for fresh air in‐ ture at the sensor fit‐
take duct -G89 ting location.
Footwell vent tem‐ - Measure tempera‐
perature sender - ture at sender fitting
G192 location.
10.3 - Test in vehicles with an operating and display unit with two displays
Heating, Air Conditioner - Edition 06.2000
▪ Test conditions Specified value Remedies if specified
- Additional opera‐
tions
▪ Ignition on - 0 to 12 V
▪ Side lights on
▪ Ignition on - 0 to 12 V
▪ Side lights off
Specified value
- Governed by the
temperature at the
sensor/pickup fitting
location
Audi A3 1997 ➤
value not attained
- Use current flow di‐
agram to locate and
eliminate open circuit
or short circuit
- Use current flow di‐
agram to locate and
eliminate open circuit
or short circuit
Remedies if speci‐
fied value not at‐
tained
- Use current flow di‐
agram to locate and
eliminate short cir‐
cuit, open circuit or
contact resistance.
=> Table, - Replace tempera‐
Page 52 . ture sensor/sender.
51