P0663 Error Code

[Halliwell2099]

Hi All,

Hope we are well, I got the engine management light the other day which came with the VSC light.

I got the diagnostic cable & software & car shows this error P0663 Intake Manifold Tuning Valve Control Cuircuit/Open

Google doesn't show much, any help?

Thanks in Advance

Jamie

[Halliwell2099]

Thought I would add some pictures

[ColinBarber]

Sounds like an issue with the ACIS. That is typically controlled by a Vacuum Switching Valve (VSV). If the ECU is detecting an open circuit then the electrical connector to the valve may have been disconnected or the coil in the valve itself may have burnt out.

[Halliwell2099]

Any idea on where to start with this? Only just came back from lexus so don't really want to hand over more cash again ( I'm fairly car savvy)

[ColinBarber]

here is some info which isn't directly related to the engine in the RX300 but similar concept.

http://www.moranbahweather.com/toyota/lc_trj12/rm/rm1017e/m_05_0157.pdf

[Halliwell2099]

Thanks I'll take a look

[ColinBarber]

Just come back from Lexus? For what, they could have left something disconnected?

[Halliwell2099]

Timing belt and pump with a full service

[Halliwell2099]

That guide looks a tad over my head

[ColinBarber]

I'd say it is highly likely that it is related to the timing belt change. Even if the VSV wasn't disconnected the wiring may have been damaged.

[Halliwell2099]

What would be my plan from here ? Sorry to be a pain

[ColinBarber]

I think you need to explain what has happened to your dealer. They should sort this out free of charge if it is their fault.

[Halliwell2099]

Guess that's thenplan then, hate the car going there it always costs money and the courtesy car they give is a CT200 and with 5 of us it's no comparison

[ChrisKaye]

Hello,

You might want to try checking the part is plugged in, the connector is clean and there is no damage to the connecting pipes and wires - the item you are looking for looks like this and the wiring plugs into the brown part:

http://www.car-truck-parts.com/car-detail/sensors/TOYOTA-LEXUS-OEM-VSV-VAPOR-SWITCH-VALVE-25860_131058397547.html

The part number is printed on the unit and a check at Toyodiy.com shows it is the same for your car.

Always worth trying the simple things first! If you find damage (cut or broken wire) you can photo for proof with dealer.

The PDF file above allows you to perform tests to see if it is bad (apply 12v etc) some tests may have to be triggered from techstream to feel if vacuum/air is doing what it should at the respective pipes!

I wish I could help point you in the right direction as to where it is "under the hood" but not found anything useful other than:

http://jp-carparts.com/toyota/partlist.php?maker=toyota&type=351120&cartype=1&fig=1708

It's top left in the picture/image 2...!

Good luck and let us know how you get on. My experience with these types of parts on Toyotas is that 9 times out of 10, a good clean up and cleaning any corrosion of the connectors does the trick - they are usually very reliable.

This part should not cause you any drivability probs as pushes exhaust gas back into the intake to be burnt again and make your emissions readings better (mot time) but just having the light on the dash may be a fail....!

[ChrisKaye]

Hi there, managed to snap a pic whilst fitting new engine cover panel clips today!

The bit you want is very accessible to the right of the oil filler cap:

[Halliwell2099]

Cracking, thanks mate I'll be havin a look at this again in the morning and report back.

[ChrisKaye]

Any luck?

[Halliwell2099]

So never sorted this issues and want to have another go, it is intermittent and the light comes and goes. I found the plug shown above and unplugged and cleaned but didn't make any difference.

Any other tests I can do? The 12v test above no longer works