How to fix Honda Civic VII heater blower?
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. There will be enough room to reach the resistor. 3.
Why is my Honda Civic AC heater not working?
You shouldn’t have to crank your A/C all the way to high just to get the fan to work. This typically indicates a faulty resistor that needs to be replaced. Mechanical failures in the motor or wiring also make you hot under the collar. Alleviate these problems with a new heater blower motor for Honda Civic from AutoZone.
How does an A / C blower motor resistor work?
Blower Motor Resistor Testing. An A/C blower motor resistor uses resistance to control the speed of the blower motor. Many blower resistors control current to the blower motor in all speeds except high. In high speed the resistor is bypassed and power is fed to the motor directly from the switch.
How to test Honda Accord blower motor resistor?
Testing Honda power transistor (blower motor control module). For example, in the 2009 Honda Accord, the service manual describes the procedure as follows: Turn the ignition to ON. Press and hold the OFF button and within 10 seconds press and release the Window Defogger button five times.
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.
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.
Where is the power transistor on a Honda Civic?
Disconnect the blower motor resistor (power transistor) from its harness connector. The power transistor is located under the right side (passenger side) of the dash. IMPORTANT: Before continuing on to the next steps, verify that your Honda Civic’s ignition switch is in the Off position.
Where is the relay on a Honda blower motor?
The blower motor relay activates (since relay terminal slot #1 is always connected to chassis Ground). The relay closes the power feed circuit to the blower motor and the BLU/WHT (blue w/ white stripe) wire of the blower motor harness connector now has battery power (from the #12 fuse of the under-hood fuse box).