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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 364 (Engine Controls And Fuel - 5.3L, 6.0L & 6.2L - DTC P0443 Through DTC P3449 And Troubleshooting) >> Diagnostic Information and Procedures >> DTC P2632 >> Circuit/System Verification

Circuit/System Verification

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NOTE:

An open or a short to voltage in the control circuit will cause both the Ckt. Open Test Status and the Ckt. Short Volts Test Status parameters to display Fault.

  1. Ignition ON, command the Fuel Pump 2 Relay ON and OFF with a scan tool while observing the following control circuit status parameters:
    • Fuel Pump 2 Relay Ckt. Short Gnd Test Status
    • Fuel Pump 2 Relay Ckt. Open Test Status
    • Fuel Pump 2 Relay Ckt. Short Volts Test Status

      Each parameter should toggle between OK and Not Run or Not Run and OK.

  2. 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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