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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.
Voltage tester V.A.G 1527,
Operating and display unit connected to the test box (adapter cable V.A.G 1598/11 and /12)
- Adapter cable V.A.G 1598/11 connected
Test step V.A.G 1598
socket
Testing of ▪ Test conditions
- Additional opera‐
tions
Specified value Remedies if speci‐
fied value not at‐
tained
5.3 4
and
1
"Air conditioner
compressor cut-in"
output
▪ Engine running
▪ Compressor off
(lamp in ECON but‐
ton of -E87 lights
up).
Switch on compres‐
sor.
- LED in voltage
tester lights up.
LED in voltage test‐
er lights up a little
less brightly.
- Use current flow di‐
agram to locate and
eliminate open cir‐
cuit or short circuit.
Rectify AC com‐
pressor shutoff con‐
dition in the engine
control (emergency
operation).
Use the current flow
diagram to locate
and rectify short to
earth.
Select measuring range on hand-held multimeter V.A.G 1526:
Current measurement (200 mA =)
Operating and display unit connected to the test box (adapter cable V.A.G 1598/11 and /12)
- Adapter cable V.A,G 1598/11 connected.
Test step V.A.G 1598
socket
Testing of ▪ Test conditions
- Additional opera‐
tions
Specified value Remedies if specified
value not attained
5.4 Earth
and
1
"Air conditioner
compressor cut-in"
output
▪ Engine running
▪ Compressor
switched off.
Switch on compres‐
sor.
- Less than 5 mA
Less than 50 mA
Compressor is not
switched on.
- Use current flow di‐
agram to locate and
eliminate short circuit.
Check actuation of
control unit -J293
(=>Page 70 ).
Renew operating and
display unit -E87.
Note:
Earth applied e.g. to connector D contact 14.
Audi A3 1997 ➤
Heating, Air Conditioner - Edition 06.2000
68 01 - Self-diagnosis, Electrical check
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