Inspecting blower motor and its components,the blower motor resistor,blower motor relay,fuse etc.Requires a proper wiring diagram.
As per wiring diagram you can inspect what is faulty and causing the problem with blower motor.
See below the blower motor and components wiring diagram :-----
Look at the wire coming from the fan switch to the resistor. There is a wire that splices in and goes over to the climate control unit. This is the turn on signal for the a/c compressor circuit. Notice there is no direct connection for this circuit from the other fan speeds, it must feed back through the resistor to get a/c in fan speeds 2,3,4... If the low speed resistor is burned out, you will have no fan on low speed and no a/c in the higher speeds because this circuit cannot feed back through the resistor.
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As per wiring diagram you can inspect what is faulty and causing the problem with blower motor.
See below the blower motor and components wiring diagram :-----
Look at the wire coming from the fan switch to the resistor. There is a wire that splices in and goes over to the climate control unit. This is the turn on signal for the a/c compressor circuit. Notice there is no direct connection for this circuit from the other fan speeds, it must feed back through the resistor to get a/c in fan speeds 2,3,4... If the low speed resistor is burned out, you will have no fan on low speed and no a/c in the higher speeds because this circuit cannot feed back through the resistor.
This wiring diagram will help.
Thanks.
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