All electrical devices contain circuits that channel current to perform various tasks. Ok these are the test steps. Ford Quick Tips 68 Blower Motor Resistor Failures Testing And Inspection Heater Blower Motor Resistor Relay And More Third Blower Motor Resistor Testing If It S Bad Jeepforum Com As youre already aware your pickups heater control panel gives you the option of 4 different blower motor speeds. How to check heater blower resistor . Attach the clip lead of the test light to a good ground like a bolt screwed into metal and touch the sharp probe end to the terminals on the fuse. Jerry heasley recommended for you. Move the lead from terminal 2 to terminal 3 and check this reading against specifications. How to test vehicle acheat blower motor. The reduction in blower fan speed is accomplished thru resistors inside the blower resistor as...
