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DTC 01-D6 No Master; DTC 01-D7 Connection Check Error: Description

WARNING: This page is about a different car, the 2009 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

DTC DETECTION CONDITION

DTC No.	DTC Detection Condition	Trouble Area
01-D6 *1	When either of following conditions is met: Device that stores (stored) code has (had) been disconnected when power switch is ON (ACC or IG) Master device has (had) been disconnected when this code is stored	Multi-display power source circuit Power source circuit of component which has stored this code AVC-LAN circuit between multi-display and component which has stored this code Component which has stored this code Multi-display
01-D7 *2	When either of following conditions is met: Device that stored code has (had) been disconnected after hybrid system starts (started) Master device has (had) been disconnected when this code is (was) stored
HINT: 1: Even if no fault is present, this trouble code may be stored depending on the battery condition or hybrid system start voltage. 2: When 210 seconds have elapsed after disconnecting the power supply connector of the master component with the power switch ON (ACC or IG), this code is stored.

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.