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Home >> Cadillac >> 2008 >> STS V >> 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 assembly.
  2. Ignition OFF, test for less than 1 ohm of resistance between the low reference circuit terminal 8 and ground.
    • If greater than 1 ohm, test the circuit for an open/high resistance.
  3. Ignition ON, scan tool installed, verify that all scan tool DIC Switch parameters in the IPC Data List are Inactive.
    • If any DIC switch parameters are not Inactive, test the signal circuits terminal 9. If the circuit tests normal, replace the instrument panel cluster (IPC).
  4. Ignition ON, install a 3A fused jumper wire between the DIC switch signal circuit terminal 9 and the low reference circuit terminal 8. Verify that any scan tool DIC switch parameters are Active.
    • If not Active, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the IPC.
  5. If all circuits test normal, test or replace the DIC switch.
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