CRUISE CONTROL: LANE DEPARTURE ALERT SYSTEM (w/ Steering Control): C1AAC; Vehicle Information Unmatched; 2018 - 2020 MY Camry HV [07/2017

Last Modified: 11-20-2023	6.11:8.1.0	Doc ID: RM1000000014W7V
Model Year Start: 2018	Model: Camry HV	Prod Date Range: [07/2017 - 10/2020]
Title: CRUISE CONTROL: LANE DEPARTURE ALERT SYSTEM (w/ Steering Control): 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

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

GO TO HYBRID CONTROL SYSTEM

for Nickel Metal Hydride Battery: Click here
for Lithium-ion Battery: Click here

2.	CHECK FOR DTCs (LANE DEPARTURE ALERT SYSTEM)

(a) Clear the DTCs.

Chassis > LKA/LDA > Clear DTCs

(b) Perform the following procedure.

HINT:

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

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

Chassis > LKA/LDA > Trouble Codes

Result	Proceed to
DTC C1AAC is not output	A
DTC C1AAC is output	B

USE SIMULATION METHOD TO CHECK

REPLACE FORWARD RECOGNITION CAMERA