Last Modified: 05-08-2025 6.11:8.1.0 Doc ID: RM1000000027MTY
Model Year Start: 2023 Model: RAV4 Prod Date Range: [10/2022 -           ]
Title: CRUISE CONTROL: FRONT CAMERA SYSTEM: C1AAE00; Front Recognition Camera Heater Malfunction; 2023 - 2025 MY RAV4 RAV4 HV [10/2022 -        ]

DTC

C1AAE00

Front Recognition Camera Heater Malfunction

DESCRIPTION

The forward recognition camera controls the flow of current to the forward recognition with heater hood sub-assembly.

If the forward recognition camera detects a malfunction in the forward recognition with heater hood sub-assembly circuit, it will store this DTC.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AAE00

Front Recognition Camera Heater Malfunction

Either of the following conditions is met after 10 seconds have elapsed since the ignition switch was turned to ON:

  • Short to +B detected in the forward recognition with heater hood sub-assembly circuit for 1 second or more cumulatively
  • Open or short to ground detected in the forward recognition with heater hood sub-assembly circuit for 5 seconds or more
  • Forward recognition with heater hood sub-assembly
  • Forward recognition camera
  • Wire harness or connector

DTC Detection Conditions

 

Vehicle Condition
 

Pattern 1

Pattern 2

Pattern 3

Diagnosis Condition

After 10 seconds have elapsed since the ignition switch was turned to ON

○

○

○

Malfunction Status

Short to +B detected in the forward recognition with heater hood sub-assembly circuit.

○

-

-

Open detected in the forward recognition with heater hood sub-assembly circuit.

-

○

-

Short to ground detected in the forward recognition with heater hood sub-assembly circuit.

-

-

○

Detection Time

1 second or more

5 seconds or more

5 seconds or more

Number of Trips

1 trip

1 trip

1 trip

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • 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 and a DTC may be stored.
  • Forward recognition camera axis alignment can be performed by using either One Time Recognition, Sequential Recognition or Driving Adjustment.

    HINT:

    Forward recognition camera axis alignment can be performed by using either One Time Recognition, Sequential Recognition or Driving Adjustment.

    One Time Recognition: Click here 2022 - 2025 MY RAV4 RAV4 HV [12/2021 -        ]; CRUISE CONTROL: FRONT CAMERA: TARGET ADJUSTMENT(ONE TIME RECOGNITION)

    Sequential Recognition: Click here 2022 - 2025 MY RAV4 RAV4 HV [12/2021 -        ]; CRUISE CONTROL: FRONT CAMERA: TARGET ADJUSTMENT(SEQUENTIAL RECOGNITION)

    Driving Adjustment: Click here 2022 - 2025 MY RAV4 RAV4 HV [12/2021 -        ]; CRUISE CONTROL: FRONT CAMERA: DRIVING ADJUSTMENT

PROCEDURE

1.

CLEAR DTC

(a) Clear the DTCs.

Chassis > Front Recognition Camera > Clear DTCs

NEXT

2.

CHECK FOR DTCs

(a) Make sure that the DTC detection conditions are met.

HINT:

If the detection conditions are not met, the system cannot detect the malfunction.

(b) Check for DTCs.

Chassis > Front Recognition Camera > Trouble Codes

Result

Proceed to

DTC C1AAE00 is not output

A

DTC C1AAE00 is output

B
A

USE SIMULATION METHOD TO CHECK

B

3.

INSPECT FORWARD RECOGNITION WITH HEATER HOOD SUB-ASSEMBLY

(a) Turn the ignition switch off.

(b) Disconnect the P21 forward recognition with heater hood sub-assembly connector.

*a

Component without harness connected

(Forward Recognition with Heater Hood Sub-assembly)

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

1 (IG1) - 2 (HTR)

Ignition switch off

25.6 to 28.4 Ω

(d) Connect the P21 forward recognition with heater hood sub-assembly connector.

NG

REPLACE FORWARD RECOGNITION WITH HEATER HOOD SUB-ASSEMBLY

OK

4.

CHECK HARNESS AND CONNECTOR (POWER SOURCE VOLTAGE)

(a) Disconnect the P21 forward recognition with heater hood sub-assembly connector.

*a

Front view of wire harness connector

(to Forward Recognition with Heater Hood Sub-assembly)

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

P21-1 (IG1) - Body ground

Ignition switch ON

8 to 16 V

Ignition switch off

Below 1.5 V

(c) Connect the P21 forward recognition with heater hood sub-assembly connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
OK

5.

CHECK HARNESS AND CONNECTOR (FORWARD RECOGNITION WITH HEATER HOOD SUB-ASSEMBLY - FORWARD RECOGNITION CAMERA)

(a) Disconnect the P21 forward recognition with heater hood sub-assembly connector.

(b) Disconnect the P29 forward recognition camera connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

P21-2 (HTR) - P29-1 (HTR)

Always

Below 1 Ω

P21-2 (HTR) or P29-1 (HTR) - Body ground

Always

10 kΩ or higher

(d) Connect the P29 forward recognition camera connector.

(e) Connect the P21 forward recognition with heater hood sub-assembly connector.

OK

REPLACE FORWARD RECOGNITION CAMERA

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (FORWARD RECOGNITION WITH HEATER HOOD SUB-ASSEMBLY - FORWARD RECOGNITION CAMERA)