Fail-safe and self-diagnosis functions

The FCM/LDW/AHB-ECU constantly monitors the input and output signals. If the system detects a malfunction, it will send a failure signal to the combination meter and prohibit the FCM/LDW/automatic high beam system control under circumstances. The combination meter will provide a visual and audible warning to inform the driver of it. The FCM/LDW/AHB-ECU has the following functions for easier system checks.

• Diagnostic trouble code set
• Data list output
• Freeze frame data output

All the above items can be diagnosed using scan tool (M.U.T.-III).