Audi A3 1997 Manual page 90

Audi A3 1997 ➤
Heating, Air Conditioner - Edition 06.2000
◆ The signal generated by high-pressure sensor -G65 is also used for engine control (the required compressor
drive torque is governed by the refrigerant circuit pressure). Depending on the engine control unit version,
the signal in the measured value block is displayed as duty cycle.
=> Relevant Workshop Manual Injection and Ignition system
Test step 5 (other connections)
Select measuring range on hand-held multimeter V.A.G 1526:
Voltage measurement (20V =)
Test step Contact at
connector
to -J293
5.1 Connector
A contact 5
and
connector
A, contact
14
Note:
Connection (bridge) between contacts 5 and 14 at connector A are not present in all types of the control unit -
J293.
=> Current Flow Diagrams, Electrical Fault-Finding and Fitting Locations
Select measuring range on hand-held multimeter V.A.G 1526:
Current measurement (20 A=)
Test step Contact at
connector
to -J293
5.2 Connector
A contact 1
and
connector
A, contact 4
84
01 - Self-diagnosis, Electrical check
Testing of ▪ Test conditions
- Additional opera‐
tions
Connection via con‐
nector A (observe
notes).
Testing of ▪ Test conditions
- Additional opera‐
tions
Function of pump
for refrigerant run
out -V51 (observe
note).
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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.
Specified value Remedies if speci‐
- smaller 10 ω(ob‐ - Eliminate open cir‐
serve note). cuit or contact re‐
sistance.
Specified value Remedies if speci‐
- smaller than 5A - Use current flow di‐
(observe note). agram to locate and
eliminate open cir‐
cuit in the wiring be‐
tween pump -V51
and control unit -
J293.
Pump defective, re‐
place.
- Pump -V51 is run‐ - Use current flow di‐
ning (running noise agram to locate and
audible) eliminate open cir‐
cuit in the wiring be‐
Locate open circuit
pump -V51 and elim‐
Pump defective, re‐
fied value not at‐
tained
fied value not at‐
tained
tween pump -V51
and control unit -
J293.
in earth wiring to
inate.
place.