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Head-Up Display (HUD) System Check

WARNING: This page is about a different car, the 2000 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect scan tool to DLC. Establish communication with IPC. If scan tool communicates with IPC and no IPC DTCs are stored, go to next step. If scan tool does not communicate with IPC or IPC DTCs are stored, go to INSTRUMENT PANEL CLUSTER (IPC) DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM.
  2. Turn ignition off and back on. IPC will perform an indicator bulb check and sweep check on all gauges. If indicator lights come on and all gauges move from minimum reading to maximum reading and back to minimum reading when ignition is cycled, go to next step. If indicator lights and gauges do not operate as specified, replace IPC. Go to BODY CONTROL MODULE DIAGNOSTIC SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM in BODY CONTROL MODULES - CORVETTE article.
  3. Turn ignition off. Set HUD display dimmer switch to maximum position. See Figure . Turn ignition on. If all segments of HUD display on windshield come on and turn off in 3.5 seconds, go to next step. If HUD does not operate as specified, go to HEAD-UP DISPLAY (HUD) INOPERATIVE  under SYMPTOM TESTS.
  4. Press HUD DISPLAY button to up position. Press HUD DISPLAY button to down position. If display moves up and down on the windshield, go to next step. If HUD does not operate as specified, go to HEAD-UP DISPLAY (HUD) IMAGE HEIGHT ADJUSTMENT INOPERATIVE  under SYMPTOM TESTS.
  5. Move HUD display dimmer control to OFF position. Move HUD display dimmer control to maximum setting. If display if off in OFF position and at maximum illumination with knob at maximum, go to next step. If HUD does not operate as specified, go to HEAD-UP DISPLAY (HUD) IMAGE DOES NOT DIM  under SYMPTOM TESTS.
  6. Move HUD display dimmer control to maximum setting. Place dark fabric over ambient light sensor on HUD display unit. If display dims, go to next step. If HUD does not operate as specified, go to HEAD-UP DISPLAY (HUD) IMAGE DOES NOT DIM  under SYMPTOM TESTS.
  7. Press and hold the PAGE button on HUD controls. Display should scroll through the following display modes:
    • Speedometer
    • Speedometer And Gauges
    • Speedometer, Tachometer And Gauges
    • Speedometer And Tachometer
    • Tachometer

    When in this mode, readings should match the instrument cluster. If functions operate as described and match instrument cluster readings, go to next step. If HUD does not operate as specified, go to HEAD-UP DISPLAY (HUD) DOES NOT CHANGE DISPLAY MODES  or HEAD-UP DISPLAY (HUD) DOES NOT MATCH INSTRUMENT CLUSTER READINGS  under SYMPTOM TESTS.

  8. Set HUD display to either speedometer and gauges or speedometer, tachometer and gauges. Press and release PAGE button to scroll through following gauge readings:
    • Oil Pressure
    • Coolant Temperature
    • Fuel

    When in this mode, readings should match the instrument cluster. If functions operate as described and match instrument cluster readings, HUD is operating properly. If HUD does not operate as specified, go to HEAD-UP DISPLAY (HUD) DOES NOT CHANGE DISPLAY MODES  or HEAD-UP DISPLAY (HUD) DOES NOT MATCH INSTRUMENT CLUSTER READINGS  under SYMPTOM TESTS.

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