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11.3 - Electrical check at control unit -J293 (version for High-pressure sensor -G65)
-> Pin assignment for radiator fan control unit -J293
• Location:
on left longitudinal member in engine compartment
• Function:
- Switches radiator fans -V7 to 1st and 2nd speed
- Actuates AC magnetic clutch -N25.
- Processes the square-wave signal of high-pressure sensor -G65 and, if the refrigerant circuit pressure
is OK, sends a positive signal to -E87.
- Switches on pump for refrigerant supply -V51 (in vehicles with pump for refrigerant supply -V51) when
the ignition is switched on. The pump remains in operation for a brief time after the ignition is switched
off.
=> Relevant Workshop Manual Injection and Ignition system
Notes:
◆ -> The following contacts in connector -A- to control unit -J293 are vacant:
- Contact 1 (in vehicles without pump for refrigerant supply -V51)
- Contact 3
- Contact 11 (at the moment only in vehicles with petrol engines with map-controlled engine cooling and
in vehicles with 81 KW diesel engine).
- Contacts 5 and 14 (dependent on type of -J293 there can be a bridge between these two contacts).
=> Current Flow Diagrams, Electrical Fault-Finding and Fitting Locations
- Contact 13 (reserved for compressor switch-off by dash panel insert, only occupied in individual vehicles).
=> Current Flow Diagrams, Electrical Fault-Finding and Fitting Locations
◆ Radiator fan control unit -J293 versions and vehicle wiring differ for vehicles with pressure switch -F129 and
high-pressure sensor -G65.
Audi A3 1997 ➤
Heating, Air Conditioner - Edition 06.2000
76 01 - Self-diagnosis, Electrical check
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