Why is my Honda Civic heater blower not working?
To buy a new resistor pack from Honda would cost in the region of £100, so it obviously makes sense to try and pin-point the source of the problem. If the blower is dead, or only runs at fast speed. If the fan runs at fast speed only, this indicates the resistor pack is short circuit.
What happens if the blower motor only works on high speed?
In other designs, the failure of 1 resistor means you lose only one speed. However, most car makers bypass the blower motor resistor completely when you move the fan speed switch to high. If your blower only operates on its highest speed, chances are you have the series type of blower motor resistor. This is the most common failure mode.
Where is the resistor on a Honda Civic heater?
It is awkward as it is a little buried amongst cables, but its not impossible. The resistor is on the left side of the fan casing and is held in by 2 screws. Just remove the cable connector first and then remove those screws
Why is my VW heater fan not working?
Owners may experience an intermittent heater blower fan, on one or more of the speed settings, or the fan may not work all, or only on full power, or may be stuck on full power. The cause can be a fault in the electronic control panel, the resistor pack, or the blower motor. A faulty Heater Resistor.
In other designs, the failure of 1 resistor means you lose only one speed. However, most car makers bypass the blower motor resistor completely when you move the fan speed switch to high. If your blower only operates on its highest speed, chances are you have the series type of blower motor resistor. This is the most common failure mode.
How do you troubleshoot a blower motor resistor?
This can be annoying, but troubleshooting is easy. If you start at the blower motor, and check resistance in the circuit, you will find the problem in no time. Power supplied from the fuse panel passes through the switch to the blower resistor assembly.
Where is the fuse on a blower motor?
Locate the fuse for the blower motor in the owners/service manual. Test the fuse, with the ignition key on, using the 12-volt test light.
How can I tell if my blower speed switch is faulty?
Test for power at all the blower speeds by moving the blower speed switch through all positions. A faulty resistor loses power at different positions on the switch. High blower speed has direct power to the motor from the switch. If there is no power indicated on high blower speed, the problem is most likely the switch or the fuse.
What to do if there is no blower fan action?
If there is no blower fan action at all, check for an open circuit fuse, or bad relay first, then check the resistor pack and the blower motor itself. Also, a seized or partially seized blower motor can cause the resistor pack to fail. 1. Remove the glovebox compartment by removing the 2 bolts under it. 2.
Why does my Honda Civic blower not come on?
This test result tells you that the blower motor is OK and that the reason it’s not coming on is due to a possible problem with the blower motor resistor (known as the power transistor). Thankfully, you can test your Honda Civic’s blower motor resistor and thus be absolutely sure that it’s fried and behind the cause of the ‘no blower’ condition.
How to test Honda Civic blower motor resistor?
The following step-by-step tutorial will show you how to test the blower motor resistor (power transistor): Blower Motor Resistor Test (2001-2005 1.7L Honda Civic). CASE 2: The blower motor DID NOT come on when you turned the key to the On position. This test result tells you that the blower motor is fried and needs to be replaced.
How to check battery power on Honda blower motor?
Unplug the blower motor from its harness connector and using your multimeter, check that terminal labeled with the number 1 (image 3 of 3 in the image viewer) has battery power when the key is in the ON position (position II).
Where is the fuse on a Honda blower motor?
Fuse #14 of the under-dash fuse box powers up and then feeds the number #2 terminal slot of the blower motor relay (on the under-hood fuse/relay box). Fuse #14 is a 10 amp fuse. Fuse #14 (of the under-dash fuse box) is the one that feeds battery power to the blower motor’s coil.
Why does my Honda Civic run so hot?
While not having enough coolant may make your engine run hotter, it can also cause your Civic to not be able to create enough heat. Is there isn’t enough line pressure, due to low coolant, then the heater core will not be able to get any coolant itself.
How can I Fix my Honda Civic VII heater?
1. Remove the glovebox compartment by removing the 2 bolts under it. 2. This reveals the ECU There are 3 bolts – 2 at the bottom and 1 at the top. Remove these and the ECU can be lowered carefully – it’s still attached by the cables.
Why is my Honda Civic heater not working?
While there are a variety of reasons your Honda Civic heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. Get your Honda issue diagnosed by a professional.
Why does my Honda Civic smell like coolant?
When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold. A failing heater core may cause a vehicle to smell of engine coolant inside the cabin. A failing heater hose may cause the vehicle to smell of engine coolant under the hood.
Why is the heater on my Ford Edge not working?
At the simplest level, there are two main reasons why the heater is not working. If it’s not coming on at all, it’s usually either the blower motor or some other wiring issue.
Why is the heater not working on my Buick Enclave?
Not having a functioning heater makes driving much less comfortable, and can be a sign of certain issues. At the simplest level, there are two main reasons why the heater is not working. If it’s not coming on at all, it’s usually either the blower motor or some other wiring issue.