I don't know !
CRANKSHAFT VARIATION RELEARN (CASE Learn)
ĒCASEĒ means: crankshaft angle sensor error.
A crankshaft variation relearn must be performed if:
A diagnostic trouble code of P1336 is present.
The computer has been replaced or re-programmed.
The crankshaft position sensor has been replaced.
The engine, harmonic balancer, clutch, or flywheel
have been: disassembled, removed, or replaced.
The crankshaft position variation learning feature
enables the computer to compensate for part
manufacturing tolerances. This allows the computer
to accurately detect an engine misfire throughout the
engine RPM range. The learning process is stored in the
computerís memory and does not have to be repeated
unless one or more of the above conditions are present.
To perform the relearn, proceed as follows:
Connect a scan tool to make sure there are no trouble
codes stored in the computerís memory. If there is any
power train trouble code other than P1336
(Crankshaft Position Variation not learned),
the computer will disable the relearn function until the
problem that caused the code has been eliminated. Also,
make sure that the engine coolant
and oil levels are at an acceptable level.
(check it when the engine is cold)
1. Set the parking brake and block the drive wheels.
Make sure that the hood is closed.
2. Start the engine and make sure that the engine coolant
temperature is at least 158 degrees F. (70 degrees C.)
3. Turn the engine off for at least 10 seconds.
4. Select the crankshaft position variation learn procedure
(CASE Learn)on your scan tool.
5. Make sure that the transmission is in Park,
Start the engine.
6. Apply the brakes and hold the pedal firmly.
7. Follow the scan tool instructions.
Remember: That you are going to increase the
engine speed to approximately 4000 RPM.
Thatís the variation learn fuel cutoff RPM
(depending upon the engine), and that itís important
to release the throttle when the engine RPM starts to
decrease as a result of the fuel cutoff going into effect.
Failure to do such will result in over revving of the engine,
causing possible engine damage.
8. Once the engine has returned to idle, check
the status of Diagnostic trouble code P1336.
If the scan tool indicates that the CASE has been
learned, the relearn procedure is now complete.
If CASE has not been learned, check for the
presence of other power train codes.
If any exist, correct the problem,
then repeat this procedure.
---------- Post added at 07:36 PM ---------- Previous post was at 07:33 PM ----------
Nope not that ^^^^^
---------- Post added at 07:38 PM ---------- Previous post was at 07:36 PM ----------
Have you had the battery checked ?
These cars do funny things when the batteries start to go bad !
The case learn may be need to be done once you get it started and have a CEL on,
07 G5 GT
Now serving Boost
272whp 276wtq @10psi
Last edited by Cherry GT; 03-20-2013 at 06:41 PM.