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Home >> Chevrolet >> 2004 >> Optra Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 2.0L (L34 GMDAT) - DTC P0300 To DTC P0488 >> DTC P0315 >> Test Description

Test Description

The number below refers to the step number on the diagnostic table.

  1. 2:  The Crankshaft Position Variation Learn Procedure may have to be repeated up to 5 times before the procedure is learned.
Step Action Yes No
1 Did you perform the Diagnostic System Check - Engine Controls? Go to Step 2  Go to Diagnostic System Check - Engine Controls
2  Perform the crankshaft position system variation learn procedure. Refer to Crankshaft Position System Variation Learn .
Does the scan tool display Learned This Ignition?		 Go to Step 4  Go to Step 3 
3 Inspect for the following conditions:
  • Worn crankshaft bearings
  • A damaged reluctor wheel
  • Debris between the crankshaft position (CKP) sensor and the reluctor wheel
  • Excessive crankshaft runout
  • A damaged crankshaft
  • Interference in the signal circuit of the CKP sensor
  • A coolant temperature that is not within the Conditions for Running the DTC
  • The ignition switch is in the ON position until the battery has insufficient voltage
  • An engine control module (ECM) power disconnect with the ignition ON may erase the stored values and set DTC P0315

Did you complete the inspection?		 Go to Step 4  -
4
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?		 Go to Step 2  Go to Step 5 
5 Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?		 Go to Diagnostic Trouble Code (DTC) List System OK
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