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Dan
Dan, Technician
Category: Toyota
Satisfied Customers: 23590
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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Have a 1999 4 runner has evap code po446 vent control fault,

Customer Question

Have a 1999 4 runner has evap code po446 vent control fault , smoke tested the system and found no leaks , but took off the (I believe to be the vent solenoid ) to the right of the canister removed the hose to smoke the tank and hoses for leak , some blueish
color liquid leaked from the hose and removed the canister and the same thing happened ??? Never saw this before ? Any thoughts ??? Thx Robert .
Submitted: 1 year ago.
Category: Toyota
Expert:  Dan replied 1 year ago.

Hello, my name is***** is common for the 3-way VSV to stick or not operate correctly or for the charcoal canister to be faulty. The charcoal canister has many check valves and springs built inside, so always replace the canister and 3-way VSV as an assembly so the code does not reset. Here are testing instructions, let me know how it goes or if you have more questions. Thanks.

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https://www.dropbox.com/s/t8rkx356ydgj8rx/adsf.PNG?dl=0

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Customer: replied 1 year ago.
Hey Dan how r ya !! Ok but what about that liquid tat came from the hose and canister ? I shook the canister and heard nothing riddling like lose crystals but when I smoked tested the hoses leading to the vent solenoid I had smoke coming out of the other hose that s attached but when I closed it with my scanner no smoke , isn't that telling me that the vent solenoid is working ok ?
Expert:  Dan replied 1 year ago.

I'd have to think the blueish liquid would be fuel with a color or charcoal mixed into it. That would point toward the vent/canister close valve working but there are internal valves in canister that can also cause this problem. Here are testing instructions for code for manual, let me know if you have questions. Thanks.

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https://www.dropbox.com/s/ridptb1jat3uzm4/p0446.pdf?dl=0

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Customer: replied 1 year ago.
Ok Dan so ur suggesting to replace the canister and vent solenoid ? This is the one closest to the firewall and has only 2 hoses coming from it correct ?? Thx
Expert:  Dan replied 1 year ago.

If you are sure there are no leaks then yes the canister/vsv assembly would be your best option. Let me know how it turns out or if you have more questions, thanks.

Customer: replied 1 year ago.
Hey Dan , I haven't received the 4 runner in yet for service of the po446 but as soon as I do I will let u know .
Expert:  Dan replied 1 year ago.

No problem. The website sends the automatic reminders so just ignore them until problem is fixed. Keep me updated. Thanks.

Customer: replied 1 year ago.
Hey Dan I haven't got the 99 4 runner back yet but have another one with a different problem . Not sure if I need to request another tec or not but here's my problem . 2006 4 runner had abs codes codes are ,,,co200 Co 205,, co210. , co215 c1223 and ci1236 can u help me with these ????? Thx Robert .
Expert:  Dan replied 1 year ago.

What is your vin?

Customer: replied 1 year ago.
I can get it for u today , is the vin necessary ? Also I tried to clear the codes and they wouldn't clear , tried it 4 times . Am guessing that it may be the abs controller is bad or the abs pump assy ? Thx Dan !!
Expert:  Dan replied 1 year ago.

I'm not finding any information based on year but sometimes if I check with vin I'm able to get more information.

Customer: replied 1 year ago.
Ok iLL get it for u in the morning Dan , thx!
Expert:  Dan replied 1 year ago.

Thanks.

Customer: replied 1 year ago.
Hey Dan how are ya , ok I have the vin for the 4 runner that has the abs problem it is ,J T E B U 1 Y R 3 6 0 0 9 2 3 0 3. Production date if u need it is 1 /06
Expert:  Dan replied 1 year ago.

I'm not seeing that as a valid vin, can you double check? Is this a U.S vehicle? Did you ever fix the P0446 code? Thanks.

Customer: replied 1 year ago.
Didn't get the other 4 runner back yet , little short on money and now with Xmas not sure when I will get it back in . I will let u know when I get it back . As for the vin I will have to go back to the vehicle in the morning to confirm the vin . Thx Dan !
Expert:  Dan replied 1 year ago.

Sounds good If production date is 1/06 this means vehicle is a 2006 not a 99. Is this a U.S vehicle?

Customer: replied 1 year ago.
Morning Dan there seems to be a mistake about the vin I gave you . This is not for the 99 4runner this is a different vehicle and it s a 2006 4runner that has all the abs codes I sent you . That is the correct vin for that vehicle . Please let me know what you come up with ! Thx Dan
Expert:  Dan replied 1 year ago.

These codes are related to speed sensors which usually means speed sensor, bearing, or wiring. If scan tool can monitor wheel speed sensors that would be easiest to tell which ones are missing then check wiring, if good replace speed sensor. Without scan tool you will need to monitor AC voltage output of sensor and check resistance between sensors and abs module. Let me know how it goes or if you run into questions, thanks.

Customer: replied 1 year ago.
Ok Dan I like to have alittle more depth on how to check if its the abs pump or controller / module assy if possible . I don't think every wheel speed sensor are bad plus I cannot clear the codes with my modis that I have . It won't clear the codes so something is going on more than just a wiring or sensor problem . Do u have a wiring schemtic that can help me diagnosis this problem ??? Thx !!!!!!
Expert:  Dan replied 1 year ago.

Here are wiring diagrams, it sounds like you may have a shorted wheel speed sensor wiring. Let me know how it goes or if you run into questions. Thanks.

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https://www.dropbox.com/s/0zhw9mc7dnt8izg/abs1.pdf?dl=0

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https://www.dropbox.com/s/9ocawmgnqebk3tu/abs2.pdf?dl=0

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https://www.dropbox.com/s/396arkgu56dgdnz/abs3.pdf?dl=0

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Customer: replied 1 year ago.
Hey dan , sorry for the delay but the diagrams u sent me I cannot view , my system says ,,,, safari cannot open message cause sender can't be found ??? Not sure what that means o I haven't worked on 06 4 runner yet till I get some usefull information .
Expert:  Dan replied 1 year ago.

It is working on my side, did the previous links I sent you work?

Customer: replied 1 year ago.
The last 5 responses won't come through even yesterday's didnt come through . I have to back about 10 conversations to this site to send a text response to you . It's strange cause the view my answer you send me is either in red or green too . ,but even then I still can't always ur answer . Cant understand it .
Expert:  Dan replied 1 year ago.

Try these links.

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http://docdro.id/lbXCoWZ

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http://docdro.id/gqj8TWn

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http://docdro.id/A760Hug

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