LEMON Manuals: Even more car manuals for everyone
Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 439 (Lighting System) >> Diagnostic Information and Procedures >> Park, License, and/or Tail Lamps Malfunction (Front LED Park/Marker Lamps with T4Q) >> Circuit/System Verification

Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  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.
    • If the readings do not change between the commanded states, refer to Park Lamp Switch Malfunction.
  2. Command the Parking Lamps ON and OFF with a scan tool. The park lamps should turn ON and OFF when changing between the commanded states.
    • If the park lamps do not turn ON and OFF when commanded, refer to Park, License, and/or Tail Lamps Malfunction.
  3. Command the Parking Lamps ON and OFF with a scan tool. The front LED park lamps should turn ON and OFF when changing between the commanded states.
    • If the front LED park lamps do not turn ON and OFF when commanded, refer to Front LED Park Lamps Malfunction.
scientia non olet · About LEMON Manuals