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Chevy Astro 94 have 12V in switch and is work but fan blower does not run ;where is it located and how can you tested?
Wiki User
∙ 8y ago
On some years, there are 2 separate fuses, one for the switch and another for the blower motor. First make sure fuses are good, if all is good, the blower motor is located under the hood, pass side at firewall. There should be a purple wire going to the motor, on the high blower motor setting there should be 12v at that wire. If 12v is available at the purple wire, make sure your ground is good (blower motor ground is at the motor case - black wire attached). If both are good, most likely cause would be the blower motor itself. If 12v was not present at the purple wire, likely causes are the blower motor relay (which is found just above the blower motor), mode switches ie. vent/blend/defrost etc. (if 12v is not present after the switch - poss colours brown or brown with a white stripe) or blower motor switch ie. high/med/low fault.
Wiki User
∙ 8y ago
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