DESCRIPTION This DTC is stored when items controlled by the certification ECU (smart key ECU assembly) cannot be customized via the navigation system vehicle customization screen. HINT: The certification ECU (smart key ECU assembly) controls the smart key system related items that are customizable via the navigation system vehicle customization screen.
CAUTION / NOTICE / HINT NOTICE:
PROCEDURE
(a) Use the Techstream to check if the CAN communication system is functioning normally. Click here OK: CAN communication DTCs are not output.
(a) Check if the smart key system is malfunctioning. for Entry Function: Click here for Start Function: Click here
HINT: Customization may not be possible depending on the malfunction in the smart key system. OK: No malfunctions are present in the smart key system.
(a) Make a note of the customizable items for the certification ECU related system. HINT: The items shown as customizable via the navigation system vehicle customization screen can also be changed using the Techstream. In the following step, the Techstream will be used. (1) To match-up the items on the navigation system vehicle customization screen with the items on the Techstream, check the customize parameters list for the smart key system related items that can be customized via the navigation system vehicle customization screen. for Entry Function: Click here
for Start Function: Click here
(b) Using the Techstream, check that it is possible to change the settings of the customize parameters that are available for customization via the navigation system vehicle customization screen. OK: The items available for customization via the navigation system vehicle customization screen can be customized successfully using the Techstream.
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Seat Heater System(for Hv Model): Lost Communication with Front Seat Temperature Adjustment Switch LIN (B14B5)
DESCRIPTION The seat heater switch (radio and display receiver assembly) communicates with the air conditioning amplifier assembly via LIN communication. If the LIN communication system is malfunctioning, the air conditioning amplifier assembly will not operate even if the seat heater switch (radio ...