Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM1000000012V4I
Model Year Start: 2018 Model: Camry Prod Date Range: [03/2017 - 10/2020]
Title: CRUISE CONTROL: FORWARD RECOGNITION CAMERA SYSTEM: C1AAE; Heater Circuit; 2018 - 2020 MY Camry [03/2017 - 10/2020]

DTC

C1AAE

Heater Circuit

DESCRIPTION

The forward recognition camera controls the flow of current to the camera heater (forward recognition hood).

If the forward recognition camera detects a malfunction in the camera heater (forward recognition hood) circuit, DTC C1AAE is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AAE

Heater Circuit

Either of the following conditions is met after 3 seconds have elapsed since the ignition switch was turned to ON:

  • While a camera heater (forward recognition hood) ON request is being sent, short to +B detected in the camera heater (forward recognition hood) circuit for 5 seconds or more.
  • While a camera heater (forward recognition hood) ON request is not being sent, open or short to ground detected in the camera heater (forward recognition hood) circuit for 5 seconds or more.
  • Camera heater (Forward recognition hood)
  • Forward recognition camera
  • Harness or connector

DTC Detection Conditions

Vehicle Condition

Vehicle Condition

Pattern 1

Pattern 2

Diagnosis Condition

Ignition switch ON

○

○

Malfunction Status

While a camera heater (forward recognition hood) ON request is being sent, short to +B detected in the camera heater (forward recognition hood) circuit.

○

-

While a camera heater (forward recognition hood) ON request is not being sent, open or short to ground detected in the camera heater (forward recognition hood) circuit.

-

○

Detection Time

5 seconds or more

5 seconds or more

Number of Trips

1 trip

1 trip

HINT:

If any of the detection patterns above are met, a DTC is output.

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. 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 [03/2017 - 10/2020]; CRUISE CONTROL: FRONT CAMERA: ADJUSTMENT (SEQUENTIAL RECOGNITION)

PROCEDURE

1.

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 ignition switch to ON and wait 8 seconds or more.

(c) Check for DTCs.

Chassis > Front Recognition Camera > Trouble Codes

Result

Proceed to

DTC C1AAE is not output

A

DTC C1AAE is output

B
A

USE SIMULATION METHOD TO CHECK 2018 MY Camry [03/2017 - 06/2017]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2018 MY Camry [06/2017 - 08/2018]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2019 MY Camry [08/2018 - 09/2019]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2020 MY Camry [09/2019 - 03/2020]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2020 MY Camry [03/2020 - 10/2020]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING

B

2.

INSPECT CAMERA HEATER (FORWARD RECOGNITION HOOD)

(a) Turn the ignition switch off.

(b) Disconnect the V16 camera heater (forward recognition hood) connector.

*1

Camera Heater (Forward Recognition Hood)

*2

Diode

*a

Component without harness connected

-

-

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

V16-2 (HTR) - A-2

Always

Ignition switch off

36.1 to 39.9 Ω

V16-1 (IG1) - A-1

Always

Ignition switch off

Below 1 Ω

A-1 - A-2
  • Positive (+) tester probe → A-1
  • Negative (-) tester probe → A-2

HINT:

If the tester probes are connected to the wrong terminals, due to the existence of the diode, current will not flow and the result will be the same as for an open circuit.

Ignition switch off

Below 1 Ω

(d) Connect the V16 camera heater (forward recognition hood) connector.

NG

REPLACE CAMERA HEATER (FORWARD RECOGNITION HOOD)

OK

3.

CHECK HARNESS AND CONNECTOR (POWER SOURCE VOLTAGE)

(a) Disconnect the V16 camera heater (forward recognition hood) connector.

*a

Front view of wire harness connector

(to Camera Heater (Forward Recognition Hood))

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

V16-1 (IG1) - Body ground

Ignition switch ON

11 to 14 V

Ignition switch off

Below 1.5 V

(c) Connect the V16 camera heater (forward recognition hood) connector.

NG

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

4.

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

(a) Disconnect the V16 camera heater (forward recognition hood) connector.

(b) Disconnect the V6 forward recognition camera connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

V16-2 (HTR) - V6-1 (HTR)

Always

Below 1 Ω

V16-2 (HTR) or V6-1 (HTR) - Body ground

Always

10 kΩ or higher

(d) Connect the V6 forward recognition camera connector.

(e) Connect the V16 camera heater (forward recognition hood) connector.

OK

REPLACE FORWARD RECOGNITION CAMERA

NG

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