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.
The blower motor resistor block is located on the underside of the HVAC housing (Heater Box) next to the blower motor. The blower motor is located at the right side of the dashboard. You can access the blower motor resistor block from under the dashboard. A Word of Caution! Stay clear of the blower motor resistor block heat sink - It could be Hot. Incidentally, I have read about people working on their dashboards and setting off the airbag. It is a good thing to disconnect the negative battery cable from the battery and make sure that it can not touch the battery post. Wait at least a couple of minutes for the airbag system to discharge.
Blown fuse? Bad switch Bad fan motor? Bad fan relay?
Check connections at the blower motor, blower motor resistor and at the switch. You may find a melted connection.
Check for a blown fuse first. If the fuse is OK, then the blower motor resistor pack or the blower motor itself may be bad.
If it's a fan speed issue check the blower motor resistor & the blower motor. Check the plugs at the resistor and blower motor for burn marks also.
A malfunctioning blower motor resistor will cause the blower motor not to work. When the resistor is bad the blower motors will not turn on.
The a/c heater blower motor resister is located in the vehicle on the passengers side inside the housing next to the blower motor...............Remove the blower motor resistor wire harness connector.Remove the blower motor resistor screws.Remove the blower motor resistor.
There is a removeable panel below the glovebox. It is in front of the blower motor against the firewall. It has a wire connector from the loom and then it plugs into the blower motor
Resistor is a separate unit from the blower motor
Generally the blower motor resistor is found close to the blower motor. It relies on the blower motor to keep it cool.
The blower motor resistor has failed.The blower motor resistor has failed.
Fig 15 Blower Motor ResistorNOTE: The blower motor resistor is located on the lower right side of the heater housing.REMOVAL# Remove lower right underpanel silencer/duct. # Disconnect wiring connectors on blower motor resistor. # Remove blower motor resistor retaining screws. # Pull blower motor resistor out of heater housing.
take the blower motor out you will see two plugs one for the motor and the other for the resistor two screws hold it in place looks like a motherboard price for new one is about 30.00
The 1991 Honda accord blower motor resistor is located on the firewall in the engine compartment. The blower motor resistor will be on the passenger side of the firewall.
The blower motor fan cools the resistor so the resistor is usually located close to the blower.
In general, the blower motor resistor is located close to the blower motor.