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

WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.

DTC DETECTION CONDITION CHART

DTC No.	DTC Detection Condition	Trouble Area
01-D5 1, 4	A component shown by the sub-code is (was) disconnected from the system when turning the ignition switch to the ON or ACC position The communication condition with the device that the code shows cannot be obtained when the engine starts	Power source circuit of the component shown by the sub-code AVC-LAN circuit between the multi-display and the component shown by the sub-code Component shown by the sub-code
01-D8 2, 4	A component shown by the sub-code is (was) disconnected from the system after engine start
01-D9 1, 4	The device that had functioned before the engine stopped is (was) disconnected from the system when the ignition switch is (was) in the ON or ACC position
01-DA *4	No response is identified when changing mode Detected when sound and image do not change by switch operation
01-DB 1, 4	A dual alarm is detected
01-DE 3, 4	This code is stored when a slave device has been disconnected after engine start
HINT: 1: Even if no failure is detected, a trouble code may be recorded depending on the battery condition or engine start voltage. 2: If the power connector is disconnected after the engine starts, this code is recorded after 180 seconds. 3: This code may be stored if the engine is started and then the ignition switch is turned to the START position again. 4: 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.

NOTE: Be sure to read DESCRIPTION before performing the following procedures.

CHECK "MULTI-DISPLAY COMMUNICATION ERROR" IN FLOW CHART
Refer to MULTI-DISPLAY COMMUNICATION ERROR .

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