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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 P0340 >> Circuit/System Verification

Circuit/System Verification

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.
  1. Ignition OFF, open the hood to disable the Auto-Stop function. Refer to Hybrid Modes of Operation Description .
  2. Ignition ON, verify the scan tool hood position parameter displays Open.
  3. Start the engine. Using the Live Plot function on the scan tool, select the camshaft position sensor parameter. Change the minimum spec to 400, and the maximum spec to 4, 000 RPM. Select the crankshaft position sensor parameter. Change the minimum spec to 600, and the maximum spec to 3, 300 RPM.
  4. Observe the scan tool.
  5. Quickly accelerate and release the accelerator pedal several times. Do not accelerate past 3, 200 RPM. The graphed lines on the Live Plot display should track together across the screen.
  6. 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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