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HOMESERVICE MANUALSPONTIAC2008GRAND PRIX BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 259 (CELLULAR, ENTERTAINMENT, AND NAVIGATION)DIAGNOSTIC INFORMATION AND PROCEDURESVIDEO ENTERTAINMENT SYSTEM INOPERATIVECIRCUIT/SYSTEM TESTING
2008 Pontiac Grand Prix Base

Circuit/System Testing

2008 Pontiac Grand Prix BaseSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2008 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the a/v box harness connector C2.
  2. Ignition ON, verify that a test lamp illuminates between the ground circuit terminal 9 and battery +.
    • If the test lamp does not illuminate, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 7 and ground.
    • If the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
    • If the circuit tests normal and the SEO ACCY fuse is open, test the B+l circuit terminal 7 for a short to ground.
  4. Ignition OFF, connect the a/v box harness connector C2
  5. Ignition ON, operate the DVD player in play mode.
  6. Is the system operating normally.
    • If yes, review the system operation with the customer.
    • If no, test the power and ground circuits to the DVD player.
  7. If the circuits test ok, replace the a/v box,
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.