I've got a 2008 V8 4runner and Have the CEL with VSV flashing. my torque app is saying I've got a p2433. I've reset the codes, it comes back. I've disconnected the battery, same code returns. Symptoms include limp mode. I can get up to speed on the highway, but only if I drive like a semi...nice and slow...Sneak up on highway speed. If I gun it, I just slowly increase speed.
Page EC-10 of the factory service manaul is attached
Checking rear VSV
Quote:
1. INSPECT PRESSURE SENSOR
(a) Turn the ignition switch to the ON position.
(b) Measure the voltage between terminals E4-32 (AIP) and E4-28 (E2) of the ECM connector.
Voltage:
1.0 to 2.2 V
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Step one I do not get enough voltages across the connecting wire. E4-32 to e4-28.
Quote:
2. INSPECT VSV FOR AIR INJECTION SYSTEM
(a) Disconnect the connector from the VSV (Procedure "A").
(b) Disconnect the 2 vacuum hoses from the VSV (Procedure "B").
(c) Using an ohmmeter, measure the resistance between the terminals (Procedure "C").
Resistance
If the resistance is not as specified, replace the
VSV.
Tester Connection Specified Condition
1 - 2 33 to 39 Ω at 20°C (68°F)
1 - Body ground 10 MΩ or higher
2 - Body ground 10 MΩ or higher
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When I check resistance and step two, I do get the correct resistance between the terminals inside the VSV on both, but if I check body to ground I do not get any resistance. It's open. That tells me that a ground wire is disconnected cut or chewed?
Quote:
step 2 continued
Check that air does not flow from the port as shown
in the illustration (Procedure "D").
If the result is not as specified, replace the VSV.
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The second check of the VSV is blowing air into the bottom tube and I am able to do that. Air will go through and come out the top. That is not to specs.
I cannot blow the other way, from top tube to the bottom, unless I supply 12 volts.. Supplying 12 V allows me to blow the top tube and air comes out the bottom tube.
Quote:
(e) Apply positive battery between the terminals, and check that air flows from the port (Procedure "E").
If the result is not as specified, replace the VSV.
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When I apply a 12 volt charge to the two terminals. I can hear a loud click inside and air moves freely, of course
Checking front VSV
Same behaviors. as above. Which makes me think both VSV didn't fail exactly the same way, it's a ground wire that is cut?
If the VSV's are fine and it's wiring, then I believe to fix it one must remove the intake manifold.
Or...one could do a bypass.
Am I missing anything? I think My results from step 1 (not high enough voltages) and that the VSV isn't closed at rest is telling me contradictory things...I'm assuming that limp mode means the VSV's are closed...but maybe I'm wrong.
Thanks for the look.
Linear Mode
