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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 >> Odometer Trip/Reset 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 12 and ground.
    • If greater than 1 ohm, test the ground circuit for an open/high resistance.
  3. Ignition ON, scan tool installed, verify that the Trip A/B Switch parameter in the IPC Data List is Inactive.
    • If not Inactive, test the signal circuit terminal 10 for a short to ground. If the circuit tests normal, replace the instrument panel cluster (IPC).
  4. Ignition ON, install a 3A fused jumper wire between the Trip A/B switch signal circuit terminal 10 and the ground circuit terminal 12. Verify that the scan tool Trip A/B Switch parameter in the IPC Data List is Active.
    • If not Active, test the Trip A/B 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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