Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM100000001ETPS
Model Year Start: 2019 Model: Camry HV Prod Date Range: [09/2018 - 10/2020]
Title: PRE-COLLISION: PRE-COLLISION SYSTEM: C1A47; Steering Angle Sensor; 2019 - 2020 MY Camry HV [09/2018 - 10/2020]

DTC

C1A47

Steering Angle Sensor

DESCRIPTION

The millimeter wave radar sensor assembly receives steering angle information from the steering sensor. If the millimeter wave radar sensor assembly detects a steering sensor malfunction, DTC C1A47 will be stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1A47

Steering Angle Sensor

While the vehicle is being driven at a speed of 50 km/h (32 mph) or more, the millimeter wave radar sensor assembly receives a steering sensor malfunction signal continuously for 1 second or more.
  • Electronically controlled brake system
  • Millimeter wave radar sensor assembly

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the millimeter wave radar sensor assembly, always replace it with a new one. If a millimeter wave radar sensor assembly which was installed to another vehicle is used, the information stored in the millimeter wave radar sensor assembly will not match the information from the vehicle. As a result, a DTC may be stored.
  • If the millimeter wave radar sensor assembly has been replaced, be sure to perform millimeter wave radar sensor assembly adjustment.

    Click here 2018 - 2020 MY Camry HV [07/2017 - 10/2020]; CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: ADJUSTMENT

  • 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 2018 - 2024 MY Camry HV [07/2017 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

PROCEDURE

1.

CHECK FOR DTCs (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)

HINT:

Pre-collision system DTC C1A47 may be stored due to a malfunction in the electronically controlled brake system. Therefore, it is necessary to check for and troubleshoot electronically controlled brake system DTCs first.

(a) Check for DTCs.

Chassis > ABS/VSC/TRAC > Trouble Codes

Result

Proceed to

Electronically controlled brake system DTCs are not output

A

Electronically controlled brake system DTCs are output

B
B

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM

A

2.

CHECK FOR DTCs (PRE-COLLISION SYSTEM)

(a) Clear the DTCs.

Body Electrical > Pre-Collision 2 > Clear DTCs

(b) Perform the following procedure.

HINT:

If the following procedure is not performed, the previously output DTC cannot be detected.

  1. Drive the vehicle at a speed of 50 km/h (32 mph) or more for 1 second or more.

(c) Check for DTCs.

Body Electrical > Pre-Collision 2 > Trouble Codes

Result

Proceed to

DTC C1A47 is not output

A

DTC C1A47 is output

B
A

USE SIMULATION METHOD TO CHECK 2019 MY Camry HV [09/2018 - 09/2019]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2020 MY Camry HV [09/2019 - 10/2020]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING

B

REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY