Topic: p0315

[bluedevil]

::sigh::

  I decided to run a diagnostic today and came back with:

P0315:

Inspect for the following conditions:
1 Worn crankshaft bearings
2 A damaged reluctor wheel
3 Debris between the CKP sensor and the reluctor wheel
4 Excessive crankshaft runout
5 A damaged Crankshaft
6 Interference in the signal circuit of the CKP sensor
7 A coolant temperature that is not within the Conditions For Running the DTC
8 The ignition switch is in the ON position until the battery has insufficient voltage
9 An ECM power disconnect with the ignition ON may erase the stored values and set DTC P0315


What the hell man? 


Taken from my sources:

 P0315

DTC P0315

CIRCUIT DESCRIPTION
The crankshaft position (CKP) system variation learn feature is used to calculate reference period errors caused by slight tolerance variations in the crankshaft, and the CKP sensor. The calculated error allows the powertrain control module (PCM) to accurately compensate for reference period variations. This enhances the ability of the PCM to detect misfire events over a wide range of engine speed and load. The PCM stores the Crankshaft Position System Variation values after a learn procedure has been performed. If the actual crankshaft position variation is not within the Crankshaft Position System Variation compensating values stored in the PCM, DTC P0300 may set. If the CKP system variation values are not stored in the PCM memory, DTC P0315 sets.

CONDITIONS FOR RUNNING THE DTC
DTCs P0335, P0336, P0341, P0342, or P0343 are not set.

CONDITIONS FOR SETTING THE DTC
The CKP system variation values are not stored in the PCM memory.



ACTION TAKEN WHEN THE DTC SETS
 
-The control module illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
-The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Freeze Frame/Failure Records.


CONDITIONS FOR CLEARING THE MIL/DTC
 
-The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
-A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
-A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
-Clear the MIL and the DTC with a scan tool.



TEST

[MyBigToy]

Maybe it has something to do with the Av sitting for 5 weeks. You just replaced your battery and your post says:

8 The ignition switch is in the ON position until the battery has insufficient voltage
9 An ECM power disconnect with the ignition ON may erase the stored values and set DTC P0315

I'd reset the codes and try driving for a while and see if it goes away.

[bluedevil]

Ill try that.   Does it need to relearn?

[bluedevil]

Code still there..... ::sigh::

[mpstech]

How close was your truck to the lightning strike that hit your electric service ?
Maybe your computer or reluctance sensor was damaged by the electric field or
the reluctance wheel/sensor has become magnetized.

Like number 3 says make sure there is no debris in between wheel/sensor
or nothing is stuck to them. Make sure there are no chunks taken out of the
toothed wheel or sensor caused by debris.

Try unplugging/replugging any connectors between sensor and computer. Maybe
it's as easy as a bad connection.

I doubt it's number 1,4,5, unless you really have been beating up the motor.

You should definitely swap/check out the reluctance sensor or computer if possible.

[bluedevil]

"-A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic. "


I have not done 40 consecutive warm-up cycles since the lightning strike and after i replaced the blower. ( the AV was 4-5 weeks out of comission at that time).


Hmmm,....so,..there is a sensor there.  I wonder if i damaged it when placing the belt back on.  I remember the belt got cought under the crankshaft pulley and  i pulled it out. 

[mpstech]

Hmmm,....so,..there is a sensor there.  I wonder if i damaged it when placing the belt back on.  I remember the belt got cought under the crankshaft pulley and  i pulled it out. 

Maybe you just bent the bracket holding the sensor to the block. The furthur
the sensor is from the wheel, the weaker the signal will be, causing more variation in the
timing. If your running the sensor is most likely good.

[bluedevil]

Maybe you just bent the bracket holding the sensor to the block. The furthur
the sensor is from the wheel, the weaker the signal will be, causing more variation in the
timing. If your running the sensor is most likely good.

I took a quick peek under the AV but couldnt locate it.  I think i need t remove the "offroad" plate off to have a better view?   or is on the top side?

[Richie_Rich]

I haven't worked on one of these yet, but I'm surprised if they put the crank sensor outside of the block on a newer vehicle.
If the part about inspecting the reluctor wheel is specific to these engines, then maybe they did.
One of these days, I'm going to have to buy a service manual.

You can clear the code with a code scan tool.
If you don't have one, go to Autozone and have them clear it.

Make sure all the sensor plugs are secure.
Since you had some things apart while servicing the super charger, one may have become unplugged.
Make sure no wires have been routed near a heat source or have become melted.

If you are still setting a code and the truck runs good, we check your crank runout when you are in town.
I can bring a dial indicator and pry bar.

[bluedevil]

I haven't worked on one of these yet, but I'm surprised if they put the crank sensor outside of the block on a newer vehicle.
If the part about inspecting the reluctor wheel is specific to these engines, then maybe they did.
One of these days, I'm going to have to buy a service manual.

You can clear the code with a code scan tool.
If you don't have one, go to Autozone and have them clear it.

Make sure all the sensor plugs are secure.
Since you had some things apart while servicing the super charger, one may have become unplugged.
Make sure no wires have been routed near a heat source or have become melted.

If you are still setting a code and the truck runs good, we check your crank runout when you are in town.
I can bring a dial indicator and pry bar.

Ive tried numerous times deleting the code but no luck with the Predator tune.

[mpstech]

Here's a picture of the sensor. looks like it stick in a cover or maybe directly into the block since there is a red o-ring on the business end.

http://cgi.ebay.com/ebaymotors/02-Chevy-Silverado-Crankshaft-Position-Sensor-5.3L-New_W0QQitemZ280249620641QQcmdZViewItem?IMSfp=TL0807251149r21553#ebayphotohosting

Looks Like it's located in the right rear of the motor

http://chevroletforum.com/m_73761/tm.htm

right behind the starter ...

[bluedevil]

Cool.   Now i know what to look for.

[KY_BOB]

You can do a CPS relearn with HPT.  I've never done one but know it can be done.