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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 370 (Engine Controls And Fuel - Hybrid (LZ1) - DTC P0010 Through DTC P0341) >> Diagnostic Information and Procedures >> DTC P0315 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:

The CKP System Variation Learn Procedure may have to be repeated up to 5 times before the procedure is learned.

  1. Perform the CKP System Variation Learn Procedure. Refer to Crankshaft Position System Variation Learn .
  2. If the CKP System Variation Learn Procedure cannot be performed successfully, inspect for the following conditions:
    • Interference in the signal circuit of the CKP sensor
    • The ignition switch is left in the ON position until the battery is discharged
    • An ECM power disconnect, with the ignition ON, that may have erased the CKP system variation values and set DTC P0315
    • Any debris between the CKP sensor and the reluctor wheel
    • A damaged crankshaft-Refer to Crankshaft and Bearing Cleaning and Inspection .
    • Excessive crankshaft runout
    • Any worn crankshaft main bearings
    • A damaged or misaligned reluctor wheel
      • If the ECM is still unable to complete the Learn Procedure, replace the ECM.
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