I have replaced the sensor in the radiator. The sensor and the temp indicator in the upper hose neck that goes into the head . I've checked the relays under the hood . Both my fans run all the time with the key on . Could I have a computer problem . I know with Toyotas if anything in the coolant system fails . The coolant fan or fans default to on . Could it be possible I have a ECM problem . Does the computer control the fans . This issue is driving me nuts . Condensor fan is on with AC on or off . I've spoken to ECM repair shops . I can't get a straight answer . If there is a circuit in the ECM that has failed making fans default to on all the time . Im afraid to send to anyone . Because I don't want to get BSed . Am I missing something . 2000 Rav . This is my first post . I just joined . I hope I have asked this question in the right place and not attached to some else's question.