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DTC 01-DF: Master Error: Description

DTC No.	DTC Detection Condition	Trouble Area
01-DF *1	The device with a display fails and the master unit is switched to the audio device. Also when a communication error between the sub-master unit (audio) and master unit occurs, this DTC is stored.	Radio receiver assembly power source circuit AVC-LAN circuit between the radio receiver assembly and component which has stored this code Radio receiver assembly Component which has stored this code

HINT:

*1: When 210 seconds have elapsed after disconnecting the power supply connector of the master component with the ignition switch to ON or ACC, this DTC is stored.

NOTE:

Before starting troubleshooting, be sure to clear the DTCs stored due to the reason described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs.
The radio receiver assembly is the master unit.
Be sure to clear and recheck for DTCs after the inspection is completed to confirm that no DTCs are output.