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Home >> Cadillac >> 2009 >> XLR Base >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> Cellular System, Entertainment System, And Navigation System >> Diagnostic Information and Procedures >> DTC B0001 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the radio harness connector X1 and ECM harness connector X1.
  2. Test the vehicle speed signal circuit for an open/high resistance.
    • If the circuit tests normal, replace the radio.
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