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Home >> Chevrolet >> 2014 >> Express 1500 LS, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information and Procedures >> Chime Malfunction >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the X200 harness connector at the ignition switch.
  2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal B1 and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the IGN SW circuit fuse is open, test the signal circuit terminal B6 for a short to ground.
  3. Verify the scan tool Key In Ignition Status parameter is Key Out.
    • If not the specified value, test the signal circuit terminal B6 for a short to ground. If the circuit tests normal, replace the BCM.
  4. Install a 3A fused jumper wire between the signal circuit terminal B6 and the B+ circuit terminal B1. Verify the scan tool Key in Ignition Status parameter is Key In.
    • If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
  5. If all circuits test normal, test or replace the ignition switch.
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