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Component Testing

WARNING: This page is about a different car, the 2008 Pontiac G8. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: It is recommended that component testing is performed before circuit testing when diagnosing infotainment unit functions.
  1. Turn the park lamps on.
  2. Connect the scan tool to the DLC and select Infotainment System / Audio System / Actuator Test / Display / Illumination  .
  3. Ignition On, infotainment unit On.
  4. Using the Increase soft key on the scan tool, increase the illumination level to maximum.
  5. Check the display illumination is even with no dark patches, and the fascia control buttons are illuminated.
  6. To decrease the infotainment unit illumination, press the Decrease soft key on the scan tool. Check the fascia illumination decreases accordingly.
  7. Press the Quit soft key to exit the test.
    • If the illumination function does not operate correctly, replace the infotainment unit.
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