Diesel Data: Automotive Repair

Service Hints

Radiator Fan and Condenser Fan

A3 A/C SINGLE PRESSURE SW
3 - 2 : Open above approx. 15.5 kgf/sq.cm (224 psi, 1520 kpa)
: Close below approx. 12.5 kgf/sq.cm (161 psi, 1225 kpa)



Air Conditioning (Automatic A/C)

A3 A/C DUAL PRESSURE SW
1 - 4 : Open above approx. 2.0 kgf/sq.cm (29 psi, 196 kpa) or 32 kgf/sq.cm (464 psi, 3140 kpa)

A15 (A), A16 (B) A/C CONTROL ASSEMBLY
(A) 1 - GROUND : Always approx. 12 volts
(A) 2 - GROUND : Approx 12 volts with the ignition SW at ON position
(A)24 - GROUND : Always continuity

Air Conditioning (Manual A/C)

A3 A/C DUAL PRESSURE SW
1 - 4 : Open above approx. 2.0 kgf/sq.cm (29 psi, 196 kpa) or 32 kgf/sq.cm (464 psi, 3140 kpa)

H9 (A), H10 (B) HEATER CONTROL SW
+B - GROUND : Always approx. 12 volts
G+ - GROUND : Approx. 12 volts with the ignition SW at ON position
REC - GROUND : Approx. 12 volts with RECIRC SW on
FRS - GROUND : Approx. 12 volts with FRESH SW on
E - GROUND : Always continuity
GND - GROUND : Always continuity