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Home >> Cadillac >> 2008 >> XLR Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays & Gages >> Diagnostic Information and Procedures >> Driver Information Center (DIC) Switch Inoperative >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the driver information center (DIC) switch.
  2. Ignition OFF, test for less than 1 ohm of resistance between the ground circuit terminal 7 and ground.
    • If greater than 1 ohm, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify that all scan tool DIC Switch parameters are Inactive.
    • If any DIC switch parameter is not Inactive, test the appropriate switch signal circuit for a short to ground.
      • DIC Information Down Switch Signal Circuit Terminal 3
      • DIC Information Up Switch Signal Circuit Terminal 1
      • DIC Options Switch Signal Circuit Terminal 5
      • DIC Reset Switch Signal Terminal 6
    • If the circuits test normal, replace the instrument panel cluster (IPC).
  4. Ignition ON, install a 3-amp fused jumper wire between the DIC switch signal circuits at the appropriate terminals and the ground circuit terminal 7. Verify that all scan tool DIC switch parameters are Active.
    • If any DIC switch parameter is not Active, test the suspect signal circuit for a short to voltage or an open/high resistance. If the circuit(s) tests normal, replace the IPC.
  5. If all circuits test normal, test or replace the DIC switch.
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