98 Avalon Radiator Fan - Toyota Nation Forum : Toyota Car and Truck Forums

JoelP · 11-10-2007, 11:47 AM

My radiator fan runs constantly when key is on. Has done this in the past, but I replaced the AC Head Amplifier (computer) for $500 or so

, but now it's on again. Maybe a temp sensor now? JoelP

***toyomoho*** · 11-10-2007, 01:56 PM

The coolant fans are controlled by a series of relays. The radiator fan is tied to a temp switch installed in the radiator. The AC fan is linked to the AC compressor such that both are on or off at the same time. The radiator fan will remain on if there is an open wire in the system as a fail-safe option.

Suggest you download the wiring diagram for the Generation 4 Camry (V6 option); the two cars are almost the same. Then check for issues with wiring and control relays.

http://www.camrymanuals.com/