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Home >> Chevrolet >> 2011 >> Camaro LS, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information and Procedures >> DTC B3634 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the S27 head-up display switch. Verify the scan tool Dim Select Switch parameter displays Open.
    • If not the specified value, test the switch signal circuit terminal 3 for a short to ground. If the circuit tests normal, replace the K78 head-up display module.
  2. If all circuits tests normal, replace the S27 head-up display switch.
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