Principles of Operation: Self-Diagnostics
WARNING: This page is about a different car, the 2005 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
Press and hold the AUDIO and MENU buttons for 5 seconds.
Although on the SCP network, the navigation system provides internal diagnostics to assist with diagnosing vehicle concerns.
Press 917 Enter.
- SELF CHECK provides internal self-test diagnostics. These DTCs are also accessible through the SCP network utilizing a diagnostic tool.
- NAVIGATION INFO provides access to the speed signal, gyro, reverse input, and GPS information.
- SUB-SYSTEM INFO provides the various component configurations.
- MANUAL CHECK provides access to several diagnostics input tests:
- Voice Output verifies the audio signals from the navigation system module and audio unit.
- Hard Switch Test checks the various switches.
- Microphone Test checks the strength of the voice signal.