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, 2WD or AWD, etc.) from the main body ECU (multiplex network body ECU) and stores the information.

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

C1A02

Vehicle Information Not Obtained

When the engine switch is on (IG) and the dynamic radar cruise control system is operating, the driving support ECU assembly cannot store the vehicle specification information for approximately 0.1 seconds or more.

Driving support ECU assembly

Does not come on

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.

PROCEDURE

1.

REPLACE DRIVING SUPPORT ECU ASSEMBLY

(a) Replace the driving support ECU assembly.

Click here

NEXT

END

    Driving Support ECU (C1A01)

    Front Radar Sensor (C1A10)

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