DTC 01-D5, 01-D8, 01-D9, 01-DA, 01-DB, 01-DE: Absence of Registration Unit; No Response for Connection Check; Last Mode Error; No Response Against ON/OFF Command; Mode Status Error; Slave Reset: Description

DTC TROUBLE DETECTION CONDITION TABLE

DTC No.	DTC Detection Condition	Trouble Area
01-D51, 3	When either condition below is met: Component shown by sub-code is (was) disconnected from system when turning ignition switch ACC or ON. Communication condition with device that code shows cannot be obtained when engine starts.	Power source circuit of component shown by sub-code AVC-LAN circuit between multi-display and component shown by sub-code Component shown by sub-code
01-D82, 3	Component shown by sub-code is (was) disconnected from system after engine starts.
01-D91, 3	Device that had functioned before engine stopped is (was) disconnected from system when ignition switch is (was) ON or ACC.
01-DA*3	When either condition below is met: No response is identified when changing mode. Sound and image do not change by switch operation.
01-DB1, 3	Dual alarm is detected.
01-DE*3	Slave device has been disconnected after engine starts.
HINT: 1: Even if no fault is present, this trouble code may be stored depending on the battery condition or engine start voltage. 2: If the power connector is disconnected after the engine starts, this code is stored after 180 seconds. *3: If it is reported that the device does not exist during verification, check the power source circuit and AVC-LAN circuit for the device.

NOTE:

Before starting troubleshooting, be sure to clear DTCs to erase codes stored due to the reasons described in the HINT above. Then, check for DTCs and troubleshoot according to the output DTCs.
The multi-display is the master unit.
Be sure to clear and recheck DTCs after the inspection is completed to confirm that no DTCs are output.