How To Test A/c Condenser Fan

[bode]

Hi,

Was told I have a bad condenser fan. I want to test it to see if it works. How do I bypass relays and/or pressure switch to see if high speed works. Don't know how to diagnose problem. High speed not working.

thanks for any help

Bode

[billydpowell]

CONDENSER FAN

ON–VEHICLE INSPECTION

1. INSPECT CONDENSER FAN OPERATION

Check the fan operation at each temperature and refrigerant

pressure, as shown in the chart below.

Engine coolant and refrigerant condition A/C switch Magnetic clutch Fan motor speed

83 °C (181 °F) or below OFF or ON OFF OFF

90 °C (194 °F) or above OFF or ON OFF or ON High

83 °C (181 °F) or below and the refrigerant pressure is

approx. 1,520 kPa (15.5 kg/cm2, 220 psi) or above

ON ON Low

If operation is not as specified, proceed next inspection.

2. INSPECT FAN MOTOR OPERATION

(a) Disconnect the connector.

( B) Connect the battery and ammeter to fan motor connector,

as shown in the illustration.

© Check the fan rotates smoothly and check the reading on

ammeter.

Specified amperage: 4.2 – 4.4 A

If operation is not as specified, replace the fan motor.

If operation is as specified, check the fan relay, pressure switch

and pressure switch.