Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM1000000014W6U
Model Year Start: 2018 Model: Camry HV Prod Date Range: [07/2017 - 10/2020]
Title: CRUISE CONTROL: FORWARD RECOGNITION CAMERA SYSTEM: C1AAC; Vehicle Information Unmatched; 2018 - 2020 MY Camry HV [07/2017 - 10/2020]

DTC

C1AAC

Vehicle Information Unmatched

DESCRIPTION

When the forward recognition camera is replaced with a new one, the new forward recognition camera attempts to store the vehicle information received from the hybrid vehicle control ECU assembly. If the vehicle information stored in the forward recognition camera is different from that stored in the hybrid vehicle control ECU assembly, DTC C1AAC is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AAC

Vehicle Information Unmatched

After the power switch is turned on (IG) for 3 seconds or more, the vehicle information received from the hybrid vehicle control ECU assembly and that stored in the forward recognition camera do not match for 5 seconds or more.

  • Hybrid control system
  • Forward recognition camera

CAUTION / NOTICE / HINT

NOTICE:

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

    Click here 2018 - 2020 MY Camry HV [07/2017 - 10/2020]; CRUISE CONTROL: FRONT CAMERA: ADJUSTMENT (SEQUENTIAL RECOGNITION)

PROCEDURE

1.

CHECK FOR DTCs (HYBRID CONTROL SYSTEM)

HINT:

If DTC C1AAC is stored, the hybrid control system may be malfunctioning. Check for DTCs related to the hybrid control system first.

(a) Check for DTCs.

(1) for Nickel Metal Hydride Battery:

Powertrain > Hybrid Control > Trouble Codes

(2) for Lithium-ion Battery:

Powertrain > Hybrid Control > Trouble Codes

Result

Proceed to

Hybrid control system DTCs are not output

A

Hybrid control system DTCs are output

B

B

GO TO HYBRID CONTROL SYSTEM

  • for Nickel Metal Hydride Battery: Click here 2018 - 2024 MY Camry HV [07/2017 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): HOW TO PROCEED WITH TROUBLESHOOTING
  • for Lithium-ion Battery: Click here 2018 - 2024 MY Camry HV [07/2017 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY): HOW TO PROCEED WITH TROUBLESHOOTING

A

2.

CHECK FOR DTCs (FORWARD RECOGNITION CAMERA SYSTEM)

(a) Clear the DTCs.

Chassis > Front Recognition Camera > Clear DTCs

(b) Perform the following procedure.

HINT:

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

  1. Turn the power switch on (IG) and wait 8 seconds or more.

(c) Check for DTCs.

Chassis > Front Recognition Camera > Trouble Codes

Result

Proceed to

DTC C1AAC is not output

A

DTC C1AAC is output

B

A

USE SIMULATION METHOD TO CHECK 2018 MY Camry HV [07/2017 - 09/2018]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 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 FORWARD RECOGNITION CAMERA