Cam sensor wiring

[Stl-986]

Still fighting the cam codes on my wife's 2000 2.7. Need some help. This is all for bank 1. I am seeing 12v on pin 20 @ the DME with connector 3 disconnected, car on & connector 1 & 2 connected. Is this correct?

I know pin 1 is ground & pin 3 is 5v, which are good all the way to the sensor. Should the signal pin have 12v when the engine isn't running?

It isn't a sensor issue as the sensor isn't even connected and it isn't a bad wire because the entire connector 3 isn't even connected to the dme. the DME is actually putting 12v on pin 20.

[blue62]

Originally Posted by Stl-986

Still fighting the cam codes on my wife's 2000 2.7. Need some help. This is all for bank 1. I am seeing 12v on pin 20 @ the DME with connector 3 disconnected, car on & connector 1 & 2 connected. Is this correct?

I know pin 1 is ground & pin 3 is 5v, which are good all the way to the sensor. Should the signal pin have 12v when the engine isn't running?

It isn't a sensor issue as the sensor isn't even connected and it isn't a bad wire because the entire connector 3 isn't even connected to the dme. the DME is actually putting 12v on pin 20.

What codes are you getting???

[Stl-986]

Figured out that pin 2 (signal wire) is supposed to get 12v. Checked my 03 and it has the same thing so at least that is figured out.

Getting P0300, P0301, P0302, P0303 & p0341.

ECU was tested and tested good. coil packs moved to bank 2 and codes didn't follow so that rules out coils. brand new bosch plugs, no difference. brand new bosch cam sensor, new aos, put maf from my 03 in and no difference (same part numbers). all new vacuum lines & reservoir (old one was cracked).

Per the St. Louis dealer, car is in time (see my other posts as I doubt the dealer with anything that comes out of their mouth).

Think I am going to tackle replacing the cam tensioner pads but might just have KC Rennsport do it.

Here is bank 1 cam & crank sensors (blue is cam, red is crank)

[blue62]

Originally Posted by Stl-986

Figured out that pin 2 (signal wire) is supposed to get 12v. Checked my 03 and it has the same thing so at least that is figured out.

Getting P0300, P0301, P0302, P0303 & p0341.

ECU was tested and tested good. coil packs moved to bank 2 and codes didn't follow so that rules out coils. brand new bosch plugs, no difference. brand new bosch cam sensor, new aos, put maf from my 03 in and no difference (same part numbers). all new vacuum lines & reservoir (old one was cracked).

Per the St. Louis dealer, car is in time (see my other posts as I doubt the dealer with anything that comes out of their mouth).

Think I am going to tackle replacing the cam tensioner pads but might just have KC Rennsport do it.

Here is bank 1 cam & crank sensors (blue is cam, red is crank)

I know that the P0341 is a Cam Sensor Signal malfunction code.
Also the misfires could be caused be a Cam sensor signal issue.
But All those codes could also be caused by the Cams on that bank being out of time.
Or chain wear, or malfunction of the variocam system, or tensioner failure or tensioner pad wear.
I see from your post that the dealer checked the timing and says it is good.
But there are a few simple tests you can do to help verify that the Cam-valve timing is in fact good.
Compare fuel trims from Bank 1 to Bank 2.
Late valve timing will show fuel trims biased positive or rich on the bank in question.
Possibly resulting in poor fuel mileage.
Do an intake vacuum test at idle.
Incorrect valve timing results in lower vacuum readings.
The needle reaction can also be telling. A ticking needle can indicate a situation where one cyl fires with correct valve timing the next cyl fires with poor valve timing.
You can do a compression test and compare bank 1 numbers to bank 2 numbers.
Lower numbers on one bank versus the other can be caused by bad valve timing.
You could do a Volumetric Efficiency test. Low VE can be caused by poor valve timing.

Any one single test I mentioned is just a possible indicator of poor valve-cam timing.
Taken together they become a pretty strong indicator of poor valve-cam timing

Once you know for positive that valve-cam timing is good then that narrows things down considerably.

I know on some cars the Reluctor wheel that rotates past the Sensor to generate the signal can cause problems. Most times the issue is dirt fouling. In some instances they move out of place.

Hope this helps in some way.