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.
Select measuring range on hand-held multimeter V.A.G 1526:
Voltage measurement (20V =)
Test step Contact at
connector
to -J293
Testing of ▪ Test conditions
- Additional opera‐
tions
Specified value Remedies if speci‐
fied value not at‐
tained
2.4 Connector
B contact 2
and
connector
A, contact 6
"Fan ON" signal
from -E87 (1st
speed from temper‐
ature switch -F54).
▪ Connector de‐
tached from temper‐
ature switch -F18/-
F54, and contacts 1
and 2 jumpered
▪ Ignition on.
- approx. battery
voltage
Radiator fan running
at speed 1
- Use current flow di‐
agram to rectify volt‐
age supply to tem‐
perature switch -
F54.
Use current flow di‐
agram to locate and
eliminate open cir‐
cuit in the wiring be‐
tween temperature
switch -F54 and
control unit -J293.
Use current flow di‐
agram to locate and
eliminate open cir‐
cuit in the wiring to
fans -V7.
Service radiator fan
-V7.
Select measuring range on hand-held multimeter V.A.G 1526:
Voltage measurement (20V =)
Test step Contact at
connector
to -J293
Testing of ▪ Test conditions
- Additional opera‐
tions
Specified value Remedies if speci‐
fied value not at‐
tained
2.5 Connector
A contact 7
and
connector
A, contact 6
"Fan ON" signal
from -E87 (2nd
speed from temper‐
ature switch -F18).
▪ Connector de‐
tached from temper‐
ature switch -F18/-
F54, and contacts 2
and 3 jumpered
▪ Ignition on.
- approx. battery
voltage
- Use current flow di‐
agram to rectify volt‐
age supply to tem‐
perature switch -
F18.
Use current flow di‐
agram to locate and
eliminate open cir‐
cuit in the wiring be‐
tween temperature
switch -F18 and
control unit -J293.
Select measuring range on hand-held multimeter V.A.G 1526:
Voltage measurement (20V =)
Test step Contact at
connector
to -J293
Testing of ▪ Test conditions
- Additional opera‐
tions
Specified value Remedies if speci‐
fied value not at‐
tained
2.6 Connector
A
and
connector B
attached to
-J293
"Fan ON" signal
from -E87 (2nd
speed from temper‐
ature switch -F18).
▪ Connector de‐
tached from temper‐
ature switch -F18/-
F54, and contacts 2
and 3 jumpered
▪ Ignition on.
- Radiator fan run‐
ning at speed 2
- Use current flow di‐
agram to locate and
eliminate open cir‐
cuit in the wiring to
fans -V7.
Service radiator fan
-V7.
Control unit -J293
defective - replace.
Audi A3 1997 ➤
Heating, Air Conditioner - Edition 06.2000
74 01 - Self-diagnosis, Electrical check
To Next Page
Loading...
