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Not a typical code P0340 situation

  • Maxiboy
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7 years 5 months ago #20008 by Maxiboy
Not a typical code P0340 situation was created by Maxiboy
Hi all - I am totally miffed on this car. 2009 Suzuki SX4 automatic 4WD with ESP and 150K. Have had this car for about a month. Here's my story:

Car starts right up, but the tach is dead and the trans won't auto shift. Needle bounces on crank but dies as soon as it starts. Code P0340 cam sensor comes up. My scan tool reports live rpm but the tach is dead. Cancel the code with my scan tool and the tach comes to life and the trans shifts and the car runs great. Ignition timing advances with accel after I cancel the code. I've been driving the car every day by keeping the scan tool in the car and cancelling the code every time I start the car. Kind of a PITA. I replaced the cam sensor, changed nothing. Checked 12V, 5V and ground to the cam sensor, all in place. Took the valve cover off and marked the crank pulley and found the timing chain is right on target. I've tried a different PCM, BCM, and ABS module (all from a local reputable junk yard) and none of them changed anything. I've scoped the cmp and ckp signals with my O-scope right at the PCM and the pattern matches what's in the book exactly. I can't figure out what is causing the cam code. I have inspected wiring all over this car till my eyes were bulging. This car is clean and no wiring harnesses have been hacked into. Every ground I can find is clean and tight. Battery and charging system are both in spec. I was a mechanic back in the 80's and wrote car repair manuals after that. I've been out of the industry for over 20 years but I know my way around cars. What am I missing? Any suggestions would be greatly appreciated. Thanks for taking the time to read this....Steve from Phila..

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7 years 5 months ago #20010 by randall.sick
Replied by randall.sick on topic Not a typical code P0340 situation
Not an expert on Suzuki but, I had a friend who had a similar issue with her F150, turns out the dash cluster had a short and it caused havoc, she had it sent out for repair, and it fixed her issue. I'm assuming yours is all electronic as well as it's a 2009. Maybe a find another to swap out and test it??

My rides, 1998 Chevy Tahoe 5.7l
1999 Chevy S10 2.2l

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7 years 5 months ago #20013 by Maxiboy
Replied by Maxiboy on topic Not a typical code P0340 situation
I would try except for the fact that everything on the dash works perfectly once i clear the code.

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7 years 4 months ago #20056 by cj1
Replied by cj1 on topic Not a typical code P0340 situation
TS for unique timing conditions.
Susuki has a ECM reflash for this.
Dealer may be the best bet in this case.

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7 years 4 months ago #20057 by Maxiboy
Replied by Maxiboy on topic Not a typical code P0340 situation
Thanks for the response. I called the dealer and gave my VIN. The nice service adviser looked it up said there was no recalls or TSB's for this car related to timing and ECU issues. Do you any specific info on that TSB?

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7 years 4 months ago - 7 years 4 months ago #20062 by cj1
Replied by cj1 on topic Not a typical code P0340 situation
See BBBind.com website Susuki.
If no other remedy could try the ECM reflash.
Maybe another dealer or the manufacturer would recognize the TSB 10 10271R1
The TSB is 2010-2013 so recall wouldn't apply but may be worth a try.
Last edit: 7 years 4 months ago by cj1.

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