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no start 2001 toyota sienna CE

posted Jun 12, 2016 21:41:01 by Clark
i do have injection pulse i got spark,what the owner said was a hard in the morning before no start finally showed up.before i got the car spark plug had be replace fuel pump has been change as well injections had been check the engine has go compression sound....my codes are PO340/P1656/P1663 i also have my 5V ref and my gnds are ok as well palz i need more guild
[Last edited Jun 14, 2016 08:53:03]
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6 replies
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Tyler said Jun 12, 2016 22:07:04
Hey Clark! Interesting one you got here, I've never seen those P1656/P1663 VVT solenoid codes before. 3.3L engine?

I see that the fuel pump has been changed, but have you had the opportunity to verify fuel pressure? Or, you could add a bit of carb clean/propane to the intake and see if the engine starts.

If this were me, I'd probably be chasing the P0340 first. Scoping the cam/crank signals would let you know if you are dealing with a timing issue, VVT related or not. You could also try pulling the upper timing cover and verifying the belt marks.
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Noah said Jun 12, 2016 22:28:20
If this were me, I'd probably be chasing the P0340 first. Scoping the cam/crank signals would let you know if you are dealing with a timing issue, VVT related or not. You could also try pulling the upper timing cover and verifying the belt marks.

Beat me to it while I was looking at diagrams!
From what I could gather, p1656/p1663 are circuit codes. Neither sensor appears to share any wires, kind of weird they'd both have circuit codes.
The cam code would be be my first shot too. I may even be tempted to record the freeze frame data and clear the codes. See if that p0340 comes back with or without the VVT codes.
Massachusetts, USA
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Chris said Jun 13, 2016 19:21:18
Every time I've seen a P0340 code it's been a jumped chain or belt. The description of the code is a circuit related problem but after ruling out power, ground and signal as an issue I pull covers. You can try and get a known good waveform for CKP to CMP to compare before pulling covers. I've also seen the P0340 cancel injector pulse or spark. I'm guessing a fail safe to prevent mechanical damage.
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Clark said Jun 14, 2016 08:52:33
sorry guys my mistake the car is a 2001 sienna CE, chris i didn't have a scope to perform that procedure need more easy tricks pls
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Clark said Jun 14, 2016 09:01:56
can anyone tell me if the 2001 model have immobilizer system cause i can't seen to find anything like receiver or immo box even the key is not the normal toyota key?
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Chris said Jun 16, 2016 02:45:48
Clear the codes and crank it over and see what comes back. The OCV is most likely PWM controlled. Check for your 5v ref on both sides of the connector with it plugged in. If its there figure out where your grind/switched side is and try cranking it to see if there is a change in voltage.

If the p0340 comes right back you can back pin the signal wire if it's a 3wire Hall effect and turn the engine over by hand to see if the sensor switches between 5v and 0v.

If that test is good I'd pull covers and check for a jumped belt.

Also look for evidence of sludge in the valve cover. Lack of proper oil changes can cause major VVT trouble.
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