Possible Causes
WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
HIGH SPEED RADIATOR FAN RELAY OPERATION
HIGH SPEED RADIATOR FAN RELAY
(F1) FUSED IGNITION SWITCH OUTPUT CIRCUIT
(A16) FUSED B+ CIRCUIT
(N112) HIGH SPEED RAD FAN RELAY CONTROL CIRCUIT OPEN
(N112) HIGH SPEED RAD FAN RELAY CONTROL CIRCUIT SHORT TO GROUND
PCM