Have a 97 isuzu rodeo heater fan does not work switch seems ok but when u try to turn the fan on I get nothing. Do you think it could be the fan motor or the heater relay? If its the relay were is it located?
What you need to do is check to see if there is power to the blower motor. If there is, it is bad. If there is no power, then you need to work backwards to the resister, relay, switch. Also, make sure the fuse is good and not blown.