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Home >> Pontiac >> 2008 >> Grand Prix Base >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> Cellular System, Entertainment System, And Navigation System >> Diagnostic Information and Procedures >> DTC B2462 >> Circuit/System Testing
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Circuit/System Testing

  1. Ignition OFF, disconnect the coax harness connectors at the VCIM and the GPS antenna.
  2. Test for less than 5 ohms of resistance between the two ends of the coax cable center conductor.
    • If greater than the specified range, replace the GPS antenna coax cable.
  3. Test for less than 5 ohms of resistance between the two ends of the coax cable outer shield.
    • If greater than the specified range, replace the GPS antenna coax cable.
  4. Test for infinite resistance between the coax center conductor and the outer shield.
    • If less than the specified range, replace the GPS antenna coax cable.
  5. Connect the coax harness connector at the VCIM.
  6. Ignition ON, test for 4.0- 5.5 volts between the coax center conductor and the outer shield.
    • If not within the specified range, replace the VCIM.
  7. If all circuits test normal, replace the GPS antenna.