Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Camera "A" Heater Control Circuit Short to Battery or Open (C00CA15)

Toyota Corolla Cross (2022-2024) Service Manual / ADAS & AD / Advanced Driver Assistance System / Front Camera System / Camera "A" Heater Control Circuit Short to Battery or Open (C00CA15)

DESCRIPTION

Forward recognition camera controls the current to the windshield glass (heater). Forward recognition camera stores DTC C00CA15 when it detects a malfunction in the drive circuit of the windshield glass (heater).

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

C00CA15

Camera "A" Heater Control Circuit Short to Battery or Open

When the forward recognition camera detects a +B short circuit or an open circuit in the hot wire

  • Windshield glass
  • Forward recognition camera
  • Harness or connector

Front Recognition Camera

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION:

To prevent burns due to the heat of the windshield glass (heater), do not touch the area directly.

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.
  • When the forward recognition camera has been replaced with a new one, make sure to clear all stored vehicle control history of each system and the forward recognition camera beam axis alignment data.

    HINT:

    Forward recognition camera beam axis alignment can be performed by using "One Time Recognition", "Driving Adjustment" or "Camera Axis Adjustment Value Write".

    One Time Recognition: Click here

    Driving Adjustment: Click here

    Camera Axis Adjustment Value Write: Click here

  • If the forward recognition camera has been replaced with a new one, make sure to perform Software Version Confirmation.

    Click here

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 C00CA15 is not output

A

DTC C00CA15 is output

B

A

USE SIMULATION METHOD TO CHECK

B

3.

INSPECT FORWARD RECOGNITION CAMERA

(a) Disconnect the T33 windshield glass (heater) connector.

*a

Component without harness connected

(Windshield Glass (Heater))

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

T33-1 (IG1) - T33-2 (HTR)

Always

8.1 to 10.9 Ω

NG

REPLACE WINDSHIELD GLASS (HEATER)

OK

4.

CHECK HARNESS AND CONNECTOR (FORWARD RECOGNITION CAMERA - WINDSHIELD GLASS (HEATER))

(a) Disconnect the T32 forward recognition camera connector.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

T32-8 (HTR) - T33-1 (IG1)

Always

Below 1 V

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

5.

CHECK HARNESS AND CONNECTOR (FORWARD RECOGNITION CAMERA - WINDSHIELD GLASS (HEATER))

(a) Disconnect the T32 forward recognition camera connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

T32-8 (HTR) - T33-1 (IG1)

Always

Below 1 Ω

T32-7 (SGND) - T33-2 (HTR)

Always

Below 1 Ω

T32-8 (HTR) or T33-1 (IG1) - Other terminals

Always

10 kΩ or higher

OK

REPLACE FORWARD RECOGNITION CAMERA

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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