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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Cellular, Entertainment, And Navigation >> Diagnostic Information and Procedures >> Navigation System - Vehicle Position Indicator Inoperative or Erratic >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect connector X2 at the radio.
  2. Test for the vss signal between terminal E and ground while driving the vehicle.
    • If the vss signal is not present test the vss circuit for an open.
  3. If the circuit tests normal, replace the radio.
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