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Old 07-31-2020, 09:03 AM
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Originally Posted by wpoll View Post
While I agree that the aux fan has to be another possiblity, the fact that the dash blower runs with the car turned off points to the FSR (initially anyway...).
The hvac fan is tied in wit the ignition key and with the ignition off, the fan should stop, however, the aux fan is wired directly to a 50 amp fuse circuit so the power is LIVE all the time. Even with the key off the fan will still have power to it. The fan control circuit in the fan might have shorted that a pwm signal is no longer required to maintain the power to the fan. I posted first hand what happens when the fan control circuit short out.
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