Circuit/System Testing

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2006 Chevrolet Monte Carlo and 2006 Chevrolet Impala. 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 . The scan tool should display Learned this Ignition.
  2. If the CKP System Variation Learn Procedure cannot be performed successfully, inspect for the following conditions:
    • Any worn crankshaft main bearings.
    • A damaged or misaligned reluctor wheel.
    • Excessive crankshaft runout.
    • A damaged crankshaft-Refer to Crankshaft and Bearings Cleaning and Inspection .
    • Interference in the signal circuit of the CKP sensor.
    • The ignition switch is in the ON position until the system voltage is insufficient.
    • 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
  • If the control module is unable to complete the learn procedure, replace the control module.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.