Diagnostic Instructions
Circuit/System Description
The radio generates the audible warning through the left speaker. The radio receives audible warning requests via the serial data circuit from the instrument panel cluster (IPC) or the body control module (BCM).
Reference Information
Schematic Reference
Connector End View Reference
Electrical Information Reference
Scan Tool Reference
Scan Tool Data List
Circuit/System Testing
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.
- Ignition ON, doors closed, verify the scan tool All Door Lock Command is 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. |
Repair Instructions
Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.