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Home >> Chevrolet >> 2014 >> Camaro LS, Automatic Trans >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information and Procedures >> DTC B3634: Head-Up Display Dimming Switch >> Circuit/System Testing

Circuit/System Testing

NOTE:

Circuit/System Verification must be performed before proceeding with Circuit/System Testing.

  1. Ignition OFF, disconnect the S27 Head-Up Display Switch.
  2. Verify the scan tool Dim Select Switch parameter displays Open.
    • If Dim Select Switch parameter does not display Open 
    1. Ignition OFF, disconnect the harness connector at the Head-Up Display.
    2. Test for infinite resistance between the signal circuit terminal 3 and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the P29 Head-Up Display.
    • If Dim Select Switch parameter displays Open 
  3. Test or replace the S27 Head-Up Display Switch.
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