THATS BECAUSE POWER IS ROUTED AROUND THE RESISTOR BLOCK WHEN YOU SELECT HI-YOU NEED A NEW(BLOWER MOTOR) RESISTOR BLOCK-SHOULDNT COST MORE THAN 20 -30 DOLLARS AT NAPA
The resistor block or blower motor resistor is used to control the speed of the blower motor. That is how you get the lower speeds on your air conditioning or heater. The higher the resistance the lower the speed of the motor.
Pull out the lock on the blower motor resistor wire harness connector to unlock the connector latch . Depress the latch on the blower motor resistor wire harness connector and disconnect the connector from the resistor. Remove the two screws that secure the blower motor resistor block to the HVAC housing. Remove the resistor block from the HVAC housing............
It is a resistor or a group of resisters used to control the flow or current in a circuit. Like the resistor block in a car controls the speed of the a/c blower.
To test the blower motor resistor, unplug the resistor connector. Each blower motor switch input terminal on the resistor must have continuity to the resistor output terminal, which is connected to the circuit going to the blower motor. If the blower motor resistor continuity does not check OK, replace the faulty resistor.You need a multimeter to test the resistor block and there should be continuity between all terminals.
It's in the resistor block, which in the diagrams comes right after the fan control switch
this resistor is located next to the blower motor in the heater plenum. the coils sit in the air stream. remove the connector and the fasteners and pull the resistor block out.
behind the glove box
They are on the left, right, and rear of the block.
It will be in the fuse block under the hood.
Behind the glove compartment on the dash.
The blower motor is located in the same area as the resistor, it's held in with 3 screws. Removing them will allow the motor and wheel to drop down.