Service Hints

AUTOMATIC AIR CONDITIONING

A4 A/C DUAL PRESSURE SW
1 - 4 : Open with the refrigerant pressure at less than approx. 2.0 kgf/sq.cm (31 psi, 196 kpa) or more than approx. 32 kgf/sq.cm (455 psi, 3138 kpa)

C12 (A), C13 (B), C14 (C) A/C ECU [COMB. METER ECU]
(C) 3 - GROUND : Always approx. 12 volts
(C) 14 - GROUND : Always approx. 12 volts
(B) 13 - GROUND : Approx. 12 volts with the FRESH SW on
(B) 12 - GROUND : Approx. 12 volts with the RECIRC SW on
(C) 22 - GROUND : Always continuity