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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 508 (Engine Controls/Fuel - 5.3L, 6.0L, 6.2L - DTC P0420 To DTC P3449 And Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P3400 >> Component Testing

Component Testing

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Static Test

  1. Ignition OFF, disconnect the harness connector at the valve lifter oil manifold assembly.
  2. Connect the harness that is labeled resistance from the displacement on demand (DOD) tester to the valve lifter oil manifold connector.
  3. Connect the power leads from the DOD tester to B+ and ground. Test for 11-18 Ω on each valve lifter oil manifold solenoid.
    • If not within the specified range for each solenoid, replace the valve lifter oil manifold assembly.
  4. Test for infinite resistance between each valve lifter oil manifold circuit terminal listed and the valve lifter oil manifold housing.
    • If less than infinite resistance, replace the valve lifter oil manifold assembly.

Dynamic Test

  1. Ignition OFF, disconnect the harness connector at the valve lifter oil manifold assembly.
  2. Connect the cable that is labeled power from the displacement on demand DOD tester to the connector.
  3. Connect the power leads from the DOD tester to B+ and ground.
  4. Command each valve lifter oil manifold solenoid ON and OFF using the DOD tester. You should be able to hear each solenoid turn ON and OFF.
    • If the function does not perform as specified, replace the valve lifter oil manifold assembly.
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