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Home >> Buick >> 2017 >> Encore Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 1.4L (LUV) - Repair Instructions >> Repair Instructions >> Crankshaft Position Variation Learn >> With Scan Tool
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With Scan Tool

  1. Ignition » On / Vehicle » In Service Mode
  2. Verify there are no other DTCs set, except for DTC P0300-P0308, P0315.
    • If no other DTCs are set 
  3. Select:Module Diagnostics
  4. Select:Engine Control Module
  5. Select:Configuration/Reset Functions
  6. Select:Learn Functions
  7. Select:Crankshaft Position Variation Learn
  8. Follow the instructions on the scan tool.

    Verify the scan tool procedure was successful.

    • If the procedure was not successful and first time here 
    1. Ignition/Vehicle » Off
    2. Verify the following conditions do not exist:
    • B26 Crankshaft Position Sensor & Reluctor Ring - Foreign material passing between the components/Incorrect air gap
    • Battery Voltage - Low
    • Crankshaft Bearing - Worn
    • Crankshaft - Excessive runout/Visual Damage
    • Reluctor Ring - Misaligned/Visual Damage
    • Signal circuit@B26 Crankshaft Position Sensor - Electromagnetic Interference
      • If a condition exists » Repair or replace as necessary
      • If no condition exists » Repeat step 1
    • If the procedure was not successful and performed 4 times or less 

      Repeat step 6

    • If the procedure was not successful and performed 5 times 

      Replace the component:K20 Engine Control Module

    • If the procedure was successful 
  9. All OK.