Should I Replace VSV To Clear Check Engine Light???

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Old 05 May 2005, 06:40 am   #1 (permalink)
abracadabra2112@yahoo.com
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Default Should I Replace VSV To Clear Check Engine Light???

Here's the deal, check engine light appears with only 45,000 miles on
01 Camry CE. Had code scanned and P0446 is stored (Evarorative
Emission Control System Vent Control
Circuit Malfunction). Haynes manual first has you check the Vacuum
Switching Valve. Haynes indicates blowing in one end should result in
air coming out the other end. This happens. Haynes however also
indicates the terminals on the VSV should read between 33 - 39 ohms
resistance. My Fluke is indicating 28.5 ohms across the VSV. Is this
enough of a difference, 4.5 ohms to make the check engine light appear?
When I clear the indicator it comes back in a couple of days. I'd
hate to replace the VSV if this is not causing the problem. Any advice
would be appreciated!

Also I found the below TSB information regarding this trouble code on
the NHTSA website. How can I find out if it pertains to me without
leaving the car with the dealer and incurring charges only to find out
it doesn't? I will be going to the dealer in a couple weeks for an oil
change so maybe I will print it out and bring with me. Thanks for your
input.

Steve

Make : TOYOTA Model : CAMRY Year : 2001
Manufacturer : TOYOTA MOTOR NORTH AMERICA, INC.
Service Bulletin Num : EG01001 Date of Bulletin: JUN 08, 2001
NHTSA Item Number: 622312
Component: OTHER
Summary:
SOME VEHICLES WITH 1MZ-FE ENGINE MAY EXHIBIT A FALSE M.I.L ON.*JB


Make : TOYOTA Model : CAMRY Year : 2001
Manufacturer : TOYOTA MOTOR NORTH AMERICA, INC.
Service Bulletin Num : EG01001 Date of Bulletin: JUN 08, 2001
NHTSA Item Number: 622312
Component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
Summary:
SOME VEHICLES WITH 1MZ-FE ENGINE MAY EXHIBIT A FALSE M.I.L ON.*JB


Make : TOYOTA Model : CAMRY Year : 2001
Manufacturer : TOYOTA MOTOR NORTH AMERICA, INC.
Service Bulletin Num : EG01001 Date of Bulletin: JUL 06, 2001
NHTSA Item Number: 621980
Component: OTHER
Summary:
UNDER CERTAIN CONDITIONS, SOME VEHICLES WITH THE 1MZ-FE ENGINE MAY
EXHIBIT A
FALSE MALFUNCTION INDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODE P0446
(EVAPORATIVE EMISSION CONTROL SYSTEM VENT CONTROL MALFUNCTION) STORED.
*TT


Make : TOYOTA Model : CAMRY Year : 2001
Manufacturer : TOYOTA MOTOR NORTH AMERICA, INC.
Service Bulletin Num : EG01303R Date of Bulletin: SEP 29, 2003
NHTSA Item Number: 10004636
Component: ENGINE AND ENGINE COOLING:ENGINE
Summary:
MALFUNCTION INDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODE P0440,
P0441 AND/OR
P0446 STORED. *TT


Make : TOYOTA Model : CAMRY Year : 2001
Manufacturer : TOYOTA MOTOR NORTH AMERICA, INC.
Service Bulletin Num : EG01303 Date of Bulletin: SEP 29, 2003
NHTSA Item Number: 10003965
Component: ENGINE AND ENGINE COOLING:ENGINE
Summary:
MALFUNCTION INDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODE P0440,
P0441 AND/OR
P0446 STORED. *TT

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Old 05 May 2005, 10:43 am   #2 (permalink)
Philip
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Default Re: Should I Replace VSV To Clear Check Engine Light???

abracadabra2112@yahoo.com wrote:
> Here's the deal, check engine light appears with only 45,000 miles on
> 01 Camry CE. Had code scanned and P0446 is stored (Evarorative
> Emission Control System Vent Control
> Circuit Malfunction). Haynes manual first has you check the Vacuum
> Switching Valve. Haynes indicates blowing in one end should result in
> air coming out the other end. This happens.

SNIP

Might be more to the point to ensure your gas cap is always screwed on TIGHT
(clicking over-run). If the tank does not build a slight vacuum after a
length of time, the ECU records an evaporative failure code.



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Old 05 May 2005, 03:16 pm   #3 (permalink)
Jean-Guy Paradis
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Default Re: Should I Replace VSV To Clear Check Engine Light???

Your manual should also show that there are two VSVs. 1- VSV for EVAP and 2-
VSV for Pressure Switching valve. Check No2 and you'll probably find that it
is the one causing problems like it did on mine in similar circumstances.
In addition, my manual says that the resistance should be between 25 and 30
ohms which would mean that the VSV you are referring to is OK.
Jean-Guy

<abracadabra2112@yahoo.com> wrote in message
news:1115293238.667201.293560@o13g2000cwo.googlegr oups.com...
> Here's the deal, check engine light appears with only 45,000 miles on
> 01 Camry CE. Had code scanned and P0446 is stored (Evarorative
> Emission Control System Vent Control
> Circuit Malfunction). Haynes manual first has you check the Vacuum
> Switching Valve. Haynes indicates blowing in one end should result in
> air coming out the other end. This happens. Haynes however also
> indicates the terminals on the VSV should read between 33 - 39 ohms
> resistance. My Fluke is indicating 28.5 ohms across the VSV. Is this
> enough of a difference, 4.5 ohms to make the check engine light appear?
> When I clear the indicator it comes back in a couple of days. I'd
> hate to replace the VSV if this is not causing the problem. Any advice
> would be appreciated!
>
> Also I found the below TSB information regarding this trouble code on
> the NHTSA website. How can I find out if it pertains to me without
> leaving the car with the dealer and incurring charges only to find out
> it doesn't? I will be going to the dealer in a couple weeks for an oil
> change so maybe I will print it out and bring with me. Thanks for your
> input.
>
> Steve
>
> Make : TOYOTA Model : CAMRY Year : 2001
> Manufacturer : TOYOTA MOTOR NORTH AMERICA, INC.
> Service Bulletin Num : EG01001 Date of Bulletin: JUN 08, 2001
> NHTSA Item Number: 622312
> Component: OTHER
> Summary:
> SOME VEHICLES WITH 1MZ-FE ENGINE MAY EXHIBIT A FALSE M.I.L ON.*JB
>
>
> Make : TOYOTA Model : CAMRY Year : 2001
> Manufacturer : TOYOTA MOTOR NORTH AMERICA, INC.
> Service Bulletin Num : EG01001 Date of Bulletin: JUN 08, 2001
> NHTSA Item Number: 622312
> Component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
> Summary:
> SOME VEHICLES WITH 1MZ-FE ENGINE MAY EXHIBIT A FALSE M.I.L ON.*JB
>
>
> Make : TOYOTA Model : CAMRY Year : 2001
> Manufacturer : TOYOTA MOTOR NORTH AMERICA, INC.
> Service Bulletin Num : EG01001 Date of Bulletin: JUL 06, 2001
> NHTSA Item Number: 621980
> Component: OTHER
> Summary:
> UNDER CERTAIN CONDITIONS, SOME VEHICLES WITH THE 1MZ-FE ENGINE MAY
> EXHIBIT A
> FALSE MALFUNCTION INDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODE P0446
> (EVAPORATIVE EMISSION CONTROL SYSTEM VENT CONTROL MALFUNCTION) STORED.
> *TT
>
>
> Make : TOYOTA Model : CAMRY Year : 2001
> Manufacturer : TOYOTA MOTOR NORTH AMERICA, INC.
> Service Bulletin Num : EG01303R Date of Bulletin: SEP 29, 2003
> NHTSA Item Number: 10004636
> Component: ENGINE AND ENGINE COOLING:ENGINE
> Summary:
> MALFUNCTION INDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODE P0440,
> P0441 AND/OR
> P0446 STORED. *TT
>
>
> Make : TOYOTA Model : CAMRY Year : 2001
> Manufacturer : TOYOTA MOTOR NORTH AMERICA, INC.
> Service Bulletin Num : EG01303 Date of Bulletin: SEP 29, 2003
> NHTSA Item Number: 10003965
> Component: ENGINE AND ENGINE COOLING:ENGINE
> Summary:
> MALFUNCTION INDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODE P0440,
> P0441 AND/OR
> P0446 STORED. *TT
>



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Old 05 May 2005, 04:55 pm   #4 (permalink)
abracadabra2112@yahoo.com
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Default Re: Should I Replace VSV To Clear Check Engine Light???

Gas cap being loose results in several trouble codes not just one from
what I understand.

Thanks though...

Philip wrote:
> abracadabra2112@yahoo.com wrote:
> > Here's the deal, check engine light appears with only 45,000 miles

on
> > 01 Camry CE. Had code scanned and P0446 is stored (Evarorative
> > Emission Control System Vent Control
> > Circuit Malfunction). Haynes manual first has you check the Vacuum
> > Switching Valve. Haynes indicates blowing in one end should result

in
> > air coming out the other end. This happens.

> SNIP
>
> Might be more to the point to ensure your gas cap is always screwed

on TIGHT
> (clicking over-run). If the tank does not build a slight vacuum after

a
> length of time, the ECU records an evaporative failure code.


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