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Home >> Cadillac >> 2009 >> STS V >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 4.4L - DTC P0153 To DTC P0651 >> DTC P0351-P0358 >> Circuit/System Verification

Circuit/System Verification

  1. Start and run the engine.
  2. With a scan tool, monitor that all eight ignition control (IC) circuit status parameters display OK.
    • If the IC circuit status parameter displays, Short to Ground/Open, or Short to B+, continue with the Circuit/System Testing.
  3. Observe the Misfire Current counters using the scan tool. The counters should not be incrementing.
    • If the counters are incrementing for any of the cylinders, continue with Circuit/System Testing.
  4. Engine running, observe the DTC information with a scan tool. DTCs P0351-P0358 should not set.
  5. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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