code 12 crankcase position sensor

[gwelfmike]

My 03 won't start, the error code 12, crankcase position sensor came up.

It will turn over, and with a couple of cranks, it fires a bit, but not enough to keep going. I am wondering if anyone knows the part number for this, I have looked online and could not find it.

Any other guidance would be helpful to!

Thanks

 

[escapefjrtist]

Cycle Parts Warehouse item #27 [crank] pick up assembly, 5JW-81670-00-00. Have you had anything apart recently, pinched wire?

Is this what you're looking for?

--G

 

[gwelfmike]

Have not had it apart yet, doing that this morning. Will check wires and clean it first, but with just under 300,000 km's I think it would be time to change it.

Thanks

 

[08FJR4ME]

Check with Tony. He is parting out his 05 and he may have the part you are looking for. (101stPathfinder)

https://www.fjrforum.com/forum//index.php/topic/171092-pathfinders-05-parting-out-updated-410/?p=1355444

Dave

 

[Fred W]

Check the sensor resistance with an ohm meter:

Crankshaft position sensor resistance
420.8 ~ 569.3 Ω at 20 °C (68 °F)
(between gray and black)

 

[gwelfmike]

I have the unit off, except for where does, it connect to the wiring harness??????????

 

[gwelfmike]

back to square one, the sensor was within spec.......

 

[Fred W]

Well, the sensor could still be bad even though it ohms out OK.

Had it measured wrong it would have given you the confidence it was bad to order a new one.

Now, you'll have to check over all the wiring connections, and if you can't find anything that seems off, just take a leap of faith and order one anyway.

 

[gwelfmike]

well, I put the old CPS back in, cleaned it before I put it in. tried starting it, no go.

Put all the bits back on the bike to get ready for tow truck, started to call to make arrangements for tow truck, decided to give it one last chance, it started like the day I bought it....and it has been starting every day for the last three.

So, are Yamahas too embarrassed to be seen on a tow truck?

 

[Fred W]

This is what is known in the electronics service business as an "intermittent fault". They will generally eventually reappear (usually at the worst possible time), but are nearly impossible to troubleshoot further until it does come back.

Sorry, and good luck.

 

[gwelfmike]

Thats why I have been only taking it for short rides and not to venture out too far. A mechanic friend says it may have been a stuck or blocked sensor from sitting for the last four months and cleared itself out I have cleared the codes and so far so good.

 

[Fred W]

I'm not exactly sure what type of a proximity sensor it is. For what it costs, you might want to replace it prophylactically. It would be cheaper than a single tow-truck ride home.

 

[Donal]

My guess is that the Crank Position Sensor is not faulty, it is just doing it's job!

This has been discussed recently and the conclusion was the CPS error is displayed when the engine is not operating as the ECU expects........

Your problem is much more likely to be fuel or ignition related YMMV

 

[Fred W]

Interesting theory. I'll retract my prior recco and wait to hear more.

Donal is one of the smart guys here.

 

[Donal]

Interesting theory. I'll retract my prior recco and wait to hear more.
Donal is one of the smart guys here.

No idea where you got that notion!

I can't even claim to be smartly dressed.............

 

[Bluecoolfjr]

ive been having that intermittent code 11 that cause engine to stumble . during startup and driving, then light goes out and engine runs better.  dirty cyl position sensor ?

 

[Bluecoolfjr]

My bike is 2005 fjr1300a  with 47000 miles

 

[justacrossthehill]

Does this get its ground through one of the spiders I keep reading about?

 

[RossKean]

ive been having that intermittent code 11 that cause engine to stumble . during startup and driving, then light goes out and engine runs better.  dirty cyl position sensor ?

Code 11 on a Gen I is not related to cylinder position sensor error.  Related to ABS - not sure of the details but it will come up if you run the bike in gear on the centerstand.   Front wheel sensor signal is not received properly.

Does this get its ground through one of the spiders I keep reading about?

Grounding spiders is a Gen II issue, not Gen I.