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I am having *nearly* the same problem- had cam sensor codes pop, immediately took to independent to do the chains and replaced EVERYTHING. Code came back. He opened it up and checked timing etc. all good. Code comes on IMMEDIATELY after start. I was suspecting the ECU for awhile now, but will check the wiring and report back. it may be November before I can look tho- following this thread in case someone has progress. *Can you clarify what color/destination the wires were?****
Interesting- No duty cycle on the Camshaft in question (exhaust Bank 2)...I ordered a replacement ECU, will see if that makes a difference. The mechanic who did the timing chains said he moved the phasers and still got the codes... SO I am looking at either wires or ECU. I would expect wires would have given some kind of Duty Cycle number if they were touching. Moving the loom around creates no change.
sorry to revive an old thread but I seem to be having the same issues as described in this thread, here's the bullet points:
* newly rebuilt aj133
* slight misfiring when idling
* intermittent p0017
* swapping sensors didn't change anything
* live data in sdd, looking at actual camshaft positions, bank 1 exhaust static at the default -5.7something degrees, bank 2 exhaust fluctuates around -5.7 degrees by less than a degree, both intake camshafts fluctuate by less than a degree around 39 degrees.
* swapping sensors and actuators between banks worsened the misfires, engine almost stalls when idling
* there's no difference in bank 1 exhaust cam live data with it unplugged or plugged
* connecting bank 1 intake sensor wire to the exhaust cam sensor produces values (fluctuates around 49 degrees)
* tried to troubleshoot wiring for bank 1 exhaust sensor with a multimeter, seemed like ground wire was loosing connection but couldn't find reason, ground and 5v splices were not soldered but heatshrinked securely and seemed to have a decent connection
* tried to find continuity in ecu plug and signal wires in sensors but couldn't find it for any sensors
Any ideas? It's weird that the actual camshaft positions in sdd are totally different from what was posted in before in this thread with autel scanners. Also weird that maving sensors and actuators from bank 1 to bank 2 worsened the misfires though no difference in live data and p0017 remains. Also I'm hoping it's not the timing since only one cam seems to be affected. Wiring for the sensor also seems weird, sometimes it feels as if the gnd wire touching other wires makes it go to 0v, but sometimes it doesn't, but both exhaust and intake sensors share the same common ground wire in the loom and intake seems to be working fine while exhaust is not producing values yet if I connect the intake plug to the exhaust sensor it also gets values (can't connect exhaust plug to intake side as the wire is too short).
After testing the sensors and wiring many times it doesn't seem like it's the sensor, plugs have 5v, ground and signal wire at 4.6, what threw me off was that when all three are connected to the denso sensors the signal wire goes down to 100mv, but it goes back to 4.6v with metal near the sensor, so it's the reverse of how usually these hall effect sensors work, but it's the same behaviour on the intake cam sensor which seems to be working correctly. I was thinking maybe the metal plate on the phaser is too far away from the sensor or something physical like that, but I connected the intake sensor wire to the exhaust sensor and it did produce different fluctuating values... I guess this might also be a bad ECU but I wonder what could've caused that, the engine had to be rebuilt because the tensioners had worn spots in the guides enough to jump timing so not really related to the cam positions, and since the signal wire gets the correct voltage from the ECU I wouldn't think there's something wrong... For what it's worth the ECU is a bosch part.
After testing the sensors and wiring many times it doesn't seem like it's the sensor, plugs have 5v, ground and signal wire at 4.6, what threw me off was that when all three are connected to the denso sensors the signal wire goes down to 100mv, but it goes back to 4.6v with metal near the sensor, so it's the reverse of how usually these hall effect sensors work, but it's the same behaviour on the intake cam sensor which seems to be working correctly. I was thinking maybe the metal plate on the phaser is too far away from the sensor or something physical like that, but I connected the intake sensor wire to the exhaust sensor and it did produce different fluctuating values... I guess this might also be a bad ECU but I wonder what could've caused that, the engine had to be rebuilt because the tensioners had worn spots in the guides enough to jump timing so not really related to the cam positions, and since the signal wire gets the correct voltage from the ECU I wouldn't think there's something wrong... For what it's worth the ECU is a bosch part.
hey @kansanbrit unfortunately not, lacking motivation about this lately but here's what's new:
I spent some time troubleshooting the wiring but ultimately I think the wiring is not at fault, I connected both signal wires of the two sensors on bank 1 to an oscilloscope:
and both seem to produce similar but different patterns, considering that this is voltage coming from the ECU to the sensor I don't see a reason why the sensor or the wiring would be at fault, though SDD live data still shows the exhaust sensor position is a static line for the exhaust cam and a fluctuating line for the intake cam... Not really sure what to do next, was thinking about manually triggering the exhaust cam actuator to see if that would do anything, but I'm not sure if that won't cause piston to valve contact when done randomly. Other than that not really sure what to do next, maybe the issue is in the ECU, but not looking forward to changing it considering that I'd need find a power supply to maintain voltage and hopping that my chinese mongoose cable won't brick anything during the procedure...
