Service Hints

A4 A/C DUAL PRESSURE SW
1 - 4 : Open with the refrigerant pressure at less than approx. 216 kpa (2.2 kgf/sq.cm, 31 psi) or more than approx. 3138 kpa (32 kgf/sq.cm, 455 psi)

A12 (A) A/C CONTROL ASSEMBLY
+B - GROUND : Always approx. 12 volts
ACC - GROUND : Approx. 12 volts with the ignition SW at ACC or ON position
IG - GROUND : Approx. 12 volts with the ignition SW at ON position
GND - GROUND : Always continuity