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Home >> Cadillac >> 2007 >> STS V >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information and Procedures >> Driver Information Center (DIC) Switch(es) 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 and ground.
    • If greater than 1 ohm, test the low reference 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 all DIC switch parameters are not Inactive, test the signal circuit for a short to ground. If the circuit tests normal, replace the instrument panel cluster (IPC).
  4. Ignition ON, install a 3-Amp fused jumper wire between the DIC switch signal circuit and the low reference circuit. Verify that all scan tool DIC switch parameters are Active.
    • If not Active, test the DIC switch 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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