Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001AOP8
Model Year Start: 2019 Model: Avalon Prod Date Range: [04/2018 - 08/2021]
Title: CRUISE CONTROL: LANE DEPARTURE ALERT SYSTEM (w/ Steering Control) (for Gasoline Model): C1AA3; Vehicle Speed Sensor Circuit; 2019 - 2021 MY Avalon [04/2018 - 08/2021]

DTC

C1AA3

Vehicle Speed Sensor Circuit

DESCRIPTION

The forward recognition camera receives vehicle speed signals from the skid control ECU (brake actuator assembly). If the skid control ECU (brake actuator assembly) receives a vehicle speed sensor malfunction signal, it informs the forward recognition camera via CAN communication, and DTC C1AA3 is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AA3

Vehicle Speed Sensor Circuit

2 seconds after the engine switch is turned on (IG), a signal from the skid control ECU (brake actuator assembly) indicating a malfunction in a vehicle speed sensor is detected by the forward recognition camera for 5 seconds or more.

Electronically controlled brake system

CAUTION / NOTICE / HINT

NOTICE:

The lane departure alert system (w/ steering control) 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 [04/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING

PROCEDURE

1.

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM

HINT:

If DTC C1AA3 is output by the lane departure alert system (w/ steering control), perform troubleshooting for the electronically controlled brake system.

Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING

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