Aurora V6-214 3.5L VIN H SFI (2001)
Crankshaft Position Sensor: Service and Repair
CKP System Variation Learn Procedure
The crankshaft position system variation compensating values are stored in the PCM non-volatile memory after a learn procedure has been performed. If
the actual crankshaft position system variation is not within the crankshaft position system variation compensating values stored in the powertrain control
module (PCM), DTC P0300 may set. Refer to Diagnostic Aids in DTC P0300.
The Crankshaft Position System Variation Learn Procedure should be performed if any of the following conditions are true:
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DTC P1336 is not set.
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The PCM has been replaced.
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The PCM has been reprogrammed.
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The engine has been replaced.
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The crankshaft has been replaced.
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The crankshaft position (CKP) sensor has been replaced.
CAUTION: Before performing the Crankshaft Position System Variation Learning Procedure always set the vehicle parking brake and
block the drive wheels in order to prevent personal injury. Release the throttle immediately when the engine starts to decelerate in order to
eliminate over revving the engine. Once the learn procedure is completed, the control module will return engine control to the operator and
the engine will respond to the throttle position.
IMPORTANT: The scan tool crankshaft position system variation learn function will be inhibited if the engine coolant temperature is less than 70°C
(158°F). Allow the engine to warm to at least 70°C (158°F) before attempting the Crankshaft Position System Variation Learn procedure.
The Crankshaft Position System Variation Learn function will be inhibited if any powertrain DTCs other than DTC P1336 are set before or during the
Crankshaft Position System Variation Learn procedure. Diagnose and repair any DTCs, if set.
1. Set the parking brake.
2. Block the drive wheels.
3. Close the hood.
4. Start the engine and allow engine coolant temperature to reach at least 70°C (158°F).
5. Turn off the engine, then turn the key to On.
6. Select and enable the Crankshaft Position Variation Learn Procedure with the scan tool.
7. Start the engine.
8. Wait until instructed by the scan tool, then apply the brake pedal firmly.
9. Ensure that the transaxle is in Park.
10. Increase accelerator pedal position until the CKP System Variation Learn fuel cutoff is reached at 4050 RPM. Release the accelerator pedal after
the second fuel cutoff is reached.
11. The crankshaft position system variation compensating values are learned when the RPM decreases back to idle. If the procedure terminates, refer
to the Important above for instructions.
12. Observe the DTC status for DTC P1336.
13. If the scan tool indicates that DTC P1336 ran and passed, the Crankshaft Position System Variation Learn procedure is complete
14. Use the scan tool to clear any DTCs. DTC P1336 will not automatically clear after a successful learn procedure. DTC P1336 will not clear from
memory if the learn procedure was unsucessful.
If the scan tool indicates that DTC P1336 failed or did not run, recheck for other DTCs that may have set during the procedure. If no DTCs other than
P1336 are set, repeat the Crankshaft Position System Variation Learn procedure. If the learn procedure will not pass, a mechanical engine problem may
exist.
