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.
Test step 2 (actuation of radiator fan)
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
2.1 Connector
A contact 5
and
connector
A, contact 6
"Fan ON" signal
from -E87 (1st
speed from -E87).
▪ Engine running
Operating and dis‐
play unit -E87 in "au‐
to" mode (compres‐
sor on)
- approx. battery
voltage
- Use circuit flow di‐
agram to locate and
rectify open circuit or
short circuit to earth
in the wiring be‐
tween control unit
-J293 and -E87.
Renew operating
and display unit -
E87.
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
2.2 Connector
A contact 2
and
connector
A, contact 6
"Fan ON" signal
from -E87 (2nd
speed from pres‐
sure switch -F129).
▪ Connector re‐
moved from pres‐
sure switch -F129,
and contacts 3 and 4
jumpered
▪ Ignition on.
- approx. battery
voltage
- Use current flow di‐
agram to rectify volt‐
age supply to pres‐
sure switch -F129.
Use current flow di‐
agram to locate and
eliminate open cir‐
cuit in the wiring be‐
tween pressure
switch -F129 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
2.3 Connector
A
and
connector
B attached
to -J293
Actuation of fan -V7
(speed 2) from pres‐
sure switch -F129.
▪ Ignition on.
▪ Connector de‐
tached from pres‐
sure switch -F129.
Contacts 3 and 4
jumpered (at con‐
nector to -F129).
- Radiator fan run‐
ning at speed 2
- Use current flow di‐
agram to rectify volt‐
age supply to pres‐
sure switch -F129.
Use current flow di‐
agram to locate and
eliminate open cir‐
cuit in the wiring be‐
tween control unit -
J293 and fans -V7.
Service radiator fan
-V7.
Control unit -J293
defective - replace.
Audi A3 1997 ➤
Heating, Air Conditioner - Edition 06.2000
11.2 - Electrical check at control unit -J293 (version for pressure switch -F129) 73
To Next Page
Loading...
