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Circuit/System Verification

WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, command the Parking Lamps ON and OFF with a scan tool. The park lamps should turn ON and OFF when changing between the commanded states.
  2. Ignition ON, observe the scan tool IP Dimmer Switch parameter while operating the dimmer switch from high to low. The voltage parameter should change as the switch is activated.
    • If the parameter does not change, refer to I/P Dimmer Switch Malfunction.
  3. Park lamps ON, command the Interior Dimming control ON and OFF with a scan tool. The interior backlighting should illuminate from high to low for all components controlled by the indicator dimming control circuit.
    • If the backlighting does not operate as described, refer to Interior Backlighting Malfunction.
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