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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 369 (Engine Controls And Fuel - 5.3L, 6.0L & 6.2L - DTC P0010 Through DTC P0442) >> Diagnostic Information and Procedures >> DTC P0340 >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition ON, observe the DTC information with scan tool. Verify that DTC P0641 or P0651 is not set.
    • If a DTC is set , refer to DTC P0641 or P0651 for further diagnosis.
  2. Engine idling, observe the scan tool CMP Active Counter parameter. The parameter should be incrementing.
  3. Engine idling, observe the DTC information with a scan tool. DTC P0340 should not set.
  4. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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