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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 172 (Lighting Systems) >> Diagnostic Information & Procedures >> Park, License & Tail Lamps Malfunction >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition ON, observe the scan tool parking lamp switch parameter while cycling the park lamp switch ON and OFF. The readings should toggle between ACTIVE and INACTIVE.
  2. Ignition ON, command the parking lamps ON and OFF with a scan tool. The Parking Lamps should turn ON and OFF.
    • If the parking lamps do not turn ON and OFF between the commanded states, refer to Park Lamp Malfunction .
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