Hope someone can help with this
Car in for routine cam belt change
Used locking kit as per autodata,this has a dephaser pulley for vvt!
Reluctant to start initially followed by ECM lamp,low on power,but now starts well
Code as above cps circuit short to ground ,however I believe this can be set for many reasons!
Yep, rechecked & double checked cam timing ,the dephaser pulley has no key to cam & appears not to have a setting procedure like a micra vvt,so mechanically it is good I think!,also had a plug out to check cam position at tdc,looks good
Scoped cam vs crank & yes the cam looks slightly late but zero duty cycle on the cam actuator proves the ECM is not interested in controlling it,I've actuated the unit and watched the duty cycle to about 80% so the control is able to ask the cam to advance
Sure enough you can disconnect cam sensor at any point it make no difference,the ECM is not using its data
Crank sensor scope pattern good switching from 5v to0 & tested all wires on the circuit for short to ground all good
Only other shared device is map which functions good ,this code comes straight back before the engine fires.
I guess it seems a lot of work &most may of stuffed a sensor on ,but it's not my style
I've self studied a bit & there's lots of stuff about synchronisation using reving technique but I believe that's for earlier models
There is prob more that I missed sorry bout the long post ,I would love your thoughts Keith
Ps would of posted waveforms but failed badly last time,bit like my diagnostic technique