Audi A3 1997 Manual page 68

Audi A3 1997 ➤
Heating, Air Conditioner - Edition 06.2000
◆ 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.
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
1.7 11 and
earth
1.8 11 and
earth
Notes:
◆ Earth applied e.g. to connector D contact 14.
◆ The brightness of the display of the -E87 is controlled via terminal 58s.
◆ The voltage at terminal 58s is governed by the setting of the illumination control.
Voltage tester V.A.G 1527,
- Adapter cable V.A.G 1598/11 connected
Test step V.A.G 1598
socket
1.9 12
and earth
1.10 12
and earth
Note:
Earth applied e.g. to connector D contact 14.
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62
01 - Self-diagnosis, Electrical check
Testing of ▪ Test conditions
- Additional opera‐
tions
Terminal 58s on - ▪ Ignition on.
E87 ▪ Side lights switched
on.
Terminal 58s on - ▪ Ignition on.
E87 ▪ Side lights off
Testing of ▪ Test conditions
- Additional opera‐
tions
Signal for ignition ▪ Ignition on.
off time
Signal for ignition ▪ Ignition on.
off time Start engine.
Specified value Remedies if specified
value not attained
- 0 to 12 V - Use current flow di‐
agram to locate and
eliminate open circuit
or short circuit
- approx. 0 V. - Use the current flow
diagram to locate and
rectify short to posi‐
tive
Specified value Remedies if speci‐
- the LED illuminates - Use current flow di‐
in voltage tester agram to locate and
eliminate open cir‐
cuit or short circuit
- the LED illuminates - Use current flow di‐
in voltage tester agram to locate and
when the engine is eliminate open cir‐
started, the LED in cuit or short circuit
the voltage tester Check dash panel in‐
flickers briefly (time sert
signal) and remains
illuminated
fied value not at‐
tained