Engine Cooling Fan: Testing

Integrated Relay Controller Module (IRCM) interfaces with Electronic Engine Control (EEC-IV) system to control cooling fan, A/C clutch and fuel pump. IRCM module incorporates EEC power relay, cooling fan relay (EDF relay), high-speed fan relay (HEDF relay) and fuel pump relay.

On Thunderbird, IRCM is located on right front corner of engine compartment near air intake. On all other models, IRCM is located on right front corner of radiator support bracket, near radiator.

Designated diagnostic codes must exist prior to testing IRCM. For complete information on Ford EEC-IV system, see the appropriate article in the ENGINE PERFORMANCE section.