Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001BE5E
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 - 08/2021]
Title: PRE-COLLISION: PRE-COLLISION SYSTEM (for HV Model): C1A02; Vehicle Information Not Obtained; 2019 - 2021 MY Avalon HV [04/2018 - 08/2021]

DTC

C1A02

Vehicle Information Not Obtained

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.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1A02

Vehicle Information Not Obtained

The vehicle specification information of the main body ECU (multiplex network body ECU) and driving support ECU assembly do not match for 1 second or more while the vehicle is being driven at a speed of 50 km/h (32 mph) or more.

Driving support ECU assembly

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.

    Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING

PROCEDURE

1.

REPLACE DRIVING SUPPORT ECU ASSEMBLY

(a) Replace the driving support ECU assembly.

Click here 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; CRUISE CONTROL: DRIVING SUPPORT ECU: REMOVAL

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