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Home >> Chevrolet >> 2006 >> Impala LTZ >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 3.9L - DTC P0010 To DTC P0420 >> DTC P0351, P0352, or P0353 >> Circuit/System Verification

Circuit/System Verification

  1. With the engine running, observe the Cylinder 1 and 4 IC Circuit Status, Cylinder 2 and 5 IC Circuit Status, and the Cylinder 3 and 6 ignition control (IC) Circuit Status parameters with the scan tool. All of the parameters should display OK.
    • If the parameters display anything other than OK, continue with Circuit/System Testing.
  2. With the engine running, observe the Misfire Current counters using the scan tool. The counters should not be incrementing.
    • If the counters are incrementing for a pair of companion cylinders, continue with Circuit/System Testing.
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