Circuit/System Testing
WARNING: This page is about a different car, the 2007 Chevrolet Monte Carlo and 2007 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
Before performing this diagnostics, make sure no indicators 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, radio ON, adjust the radio balance and fade to the left front speaker.
- If the speaker does not operate properly, refer to Speakers Inoperative - One or More .
- Ignition ON, verify that the scan tool Key In Ignition Status parameter is Key In.
- If not Key In, test the signal circuit and ground for a short to voltage or an open/high resistance. If all circuits test normal, replace the ignition switch.