Circuit/System Testing
WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
Before performing this diagnostics, make sure no indicator(s) are illuminated after the IPC performs a lamp test. If any indicators are illuminated after the bulb test, perform the indicator diagnostics before this diagnostics.
- Ignition ON, headlamp switch OFF, verify the scan tool Headlamp Switch parameter is Inactive.
- If not Inactive, refer to Headlamps Always On - Low or High Beam .
- Ignition ON, doors closed, verify the scan tool All Door Lock Command is On.
- If not On, refer to Courtesy Lamps Always On .
- Ignition OFF, key out of the ignition, verify the scan tool Key In Ignition Status parameter is Inactive.
- If not Inactive, test the key in ignition switch signal circuit for a short to ground. If the circuits tests normal, replace the ignition switch.