Circuit/System Verification

WARNING: This page is about a different car, the 2014 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON.
Verify the scan tool LED Backlight Dimming Command parameter changes between a high percentage to a low percentage while operating the dimmer switch from high to low.
- If the parameter does not change
  Refer to Dimmer Switch Malfunction.
- If the parameter changes
Verify the backlighting components turn ON and OFF while commanding the LED Backlight Dimming ON and OFF with a scan tool.
- If the backlighting components do not turn ON and OFF
  Refer to Interior Backlighting Malfunction.
- If the backlighting components turn ON and OFF
Verify the hazard warning switch backlighting turns ON and OFF while commanding the Hazard Lamps Switch Backlight ON and OFF with a scan tool.
- If the hazard warning switch backlighting does not turn ON and OFF
  Refer to Hazard Warning Switch Backlighting Malfunction.
- If the hazard warning switch backlighting turns ON and OFF
Verify the amber HVAC recirculation indicator illuminates when turning the recirculation function ON/OFF.
- If the amber HVAC recirculation indicator does not illuminate
  Refer to HVAC Recirculation Indicator Malfunction.
- If the amber HVAC recirculation indicator illuminates
All OK.