Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Vehicle Information Not Obtained (C1A02)

DESCRIPTION

When a new driving support ECU assembly is installed, it receives vehicle specification information (destination, steering wheel position, etc.) from the main body ECU (multiplex network body ECU) and stores the information.

DTC C1A02 is stored when the driving support ECU assembly receives the vehicle specification information from the main body ECU (multiplex network body ECU) but cannot store it.

CAUTION / NOTICE / HINT

NOTICE:

• When replacing the driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle. As a result, a DTC may be stored.
• The pre-collision system uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.

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PROCEDURE

(a) Replace the driving support ECU assembly.

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