A8 Quattro Sedan V8-4.2L (ABZ) (1998)
-
Start engine.
-
Adjust A/C to maximum cooling.
Compressor runs continuously
NOTE: If A/C clutch -N25- is not engaged, check voltage supply to A/C clutch according to wiring diagram. If voltage is OK, repair (replace)
A/C clutch.
-
Raise engine speed (RPM) to 2,000.
-
Note pressure on A/C high pressure gauge. Specified high pressure value:
-
High side (discharge) pressure increases from base pressure (engine OFF) to maximum 20 bar (290 psi)
NOTE: For switching pressure specifications of A/C refrigerant low pressure switch -F73- and A/C refrigerant high pressure switch -F118-
Pressure in refrigerant circuit corresponds to chart or is higher
-
Start engine.
-
Adjust A/C to maximum cooling performance.
NOTE: If compressor is not activated, note test requirements.