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post #1 of 14 Old 06-09-2018, 07:39 AM Thread Starter
HeathCanada
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HVAC Blower quit

My HVAC blower died. I turned up the speed, heard a few loud knocks like the fan was rubbing (?), and then nothing. No air flow on any speed.

Is it the blower or the resistor, or both?

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post #2 of 14 Old 06-09-2018, 08:15 AM
jtec
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Automatic or manual AC?

Have you checked ?

fuses -2, PDC # 11 and JUnction # 10
motor for 12v DKBLU wire?

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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post #3 of 14 Old 06-09-2018, 11:03 AM Thread Starter
HeathCanada
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Automatic.

And yes, I knew to check fuse #11, it was the first thing I checked.

I now I have also checked #10 (under dash, correct?).

Both are good.
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post #4 of 14 Old 06-09-2018, 11:40 AM
Tetto
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My controller went out not too long ago. The blower is two wires that plug directly in to the controller ("resistor", etc) - with a little creativity, you can temporarily wire the blower directly to a 12-volt source just to test it. If it blows, the blower is good so your controller is probably bad. If it doesn't blow, your blower is bad.

It's also important to check the wires and connectors for signs of over-current: scorched or melted parts. Apparently it's a thing with our WKs.
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post #5 of 14 Old 06-09-2018, 12:09 PM
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With KOEO is there 12v at blower motor?

Test either wire. advise...

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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post #6 of 14 Old 06-10-2018, 05:18 PM
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Quote:
Originally Posted by jtec View Post
With KOEO is there 12v at blower motor?

Test either wire. advise...

I'm not the OP... but I'm having the same issue.

Fuse and relay in the PDC are good.

I tested for volts at the blower motor where the blue/light blue wire meets the blower wiring (black/green). On the blue/light blue I had 12.15v at all fan settings (including off?) with KOEO.

Would this indicate the blower motor is the issue?
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post #7 of 14 Old 06-10-2018, 07:06 PM
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If 12v at blower then issue is GROUND side of blower - the resistor OR the fan switch in HVAC module...

you did have 12v both sides of blower connector?

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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post #8 of 14 Old 06-10-2018, 07:19 PM
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If 12v at blower then issue is GROUND side of blower - the resistor OR the fan switch in HVAC module...

you did have 12v both sides of blower connector?
wow jtec that was fast. Your response/pdf is much appreciated.

I had 12.15v from the dk blue, 0v from the light blue.

What are your thoughts? Thanks in advance
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post #9 of 14 Old 06-10-2018, 07:25 PM
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work on that issue - the 12v should be on both sides as there is no ground - youd description points a blower motor....

On the chassis side of blower connector use a test light* put point in one side, ground clip into other - does it light? yes or no

* or DVOM

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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post #10 of 14 Old 06-10-2018, 07:58 PM
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Quote:
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work on that issue - the 12v should be on both sides as there is no ground - youd description points a blower motor....

On the chassis side of blower connector use a test light* put point in one side, ground clip into other - does it light? yes or no

* or DVOM

I'm sorry can you please explain this in a little simpler way for me?

I wish I understood exactly what you meant....

I only see two wires coming to the blower motor. Dk blue/light blue connect to green/black connection going to the blower What does the chassis side of the blower connector mean?
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post #11 of 14 Old 06-11-2018, 08:02 AM
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unplug blower - there is a connector in your hand that is the chassis harness.

one wire has 12v, the other is seeking ground, test light one end in each cavity... KOEO fan on hi did it light? then try adjust fan speed - advise.

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
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post #12 of 14 Old 06-11-2018, 12:52 PM
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unplug blower - there is a connector in your hand that is the chassis harness.

one wire has 12v, the other is seeking ground, test light one end in each cavity... KOEO fan on hi did it light? then try adjust fan speed - advise.
ok that makes sense and thank you for all your help.

to reiterate: dk blue, light blue on connector goes to green, black wires on blower motor side of connection.

The dk blue +12v goes into the green wire on the blower connector. That has +12v. Coming out of the blower is a black wire that connects to light blue. With the blower motor connection attached and a multimeter probe in the black wire I get 0 volts at every fan speed level.

I assume this means that the blower motor is the issue if there is 12 volts coming in and 0 volts coming out.
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post #13 of 14 Old 06-11-2018, 12:55 PM
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Quote:
Originally Posted by jtec View Post
unplug blower - there is a connector in your hand that is the chassis harness.

one wire has 12v, the other is seeking ground, test light one end in each cavity... KOEO fan on hi did it light? then try adjust fan speed - advise.
When I hook the DVOM from the dark blue to the light blue on the chassis harness I get +12v at the different range speeds.
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post #14 of 14 Old 07-13-2018, 05:26 PM Thread Starter
HeathCanada
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I finally took the time to troubleshoot this. Turns out my issue was critters! Mice, to be specific. I live in rural Ontario and went on vacation before this happened, so it wasn't being driven.

I unscrewed the blower and it was pretty obvious what the issue was. Take a look at the pics. My air box was full of stuff, too. And they destroyed my air filter. It was pretty gross.

Good news is everything works fine after cleaning it out. All it cost me was a new air filter. I just have to look at my cabin air filter now and maybe change it out.
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