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Home >> Buick >> 2009 >> Allure CXL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 3.8L - DTC P0016 To DTC P0350 >> DTC P0336 >> Circuit/System Testing
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Circuit/System Testing

  1. Ignition OFF, disconnect the IC module connector. Test for less than 3 ohms on the medium resolution engine speed signal circuit IC module terminal C.
    • If greater than the specified value, test the medium resolution engine speed signal circuit for an open/high resistance.
  2. Inspect the CKP sensor for looseness and correct installation.
    • If the sensor is loose, inspect the sensor and the O-ring for damage, replace as necessary.
  3. Inspect the engine for the following conditions:
    • Engine oil for debris and contamination
    • Crankshaft reluctor wheel for damage
    • The timing chain, tensioner, and sprockets for wear or damage
    • If debris is found in the engine oil, inspect the internal engine components to determine the cause. Repair or replace any worn or damaged components.
  4. If the medium resolution engine speed signal circuit, CKP sensor and engine timing components test normal, replace the IC module.
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