Toyota Yaris: Front Camera System / Front Recognition Camera Heater Malfunction (C1AAE00)

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Engine & Hybrid System / Cruise Control / Front Camera System / Front Recognition Camera Heater Malfunction (C1AAE00)

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 to ground 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

    Sequential Recognition: Click here

    Driving Adjustment: 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 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 V11 forward recognition with heater hood sub-assembly connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

V11-1 (IG1) - V11-2 (HTR)

Ignition switch off

25.6 to 28.4 Ω

(d) Connect the V11 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 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

V11-1 (IG1) - Body ground

Ignition switch ON

8 to 16 V

Ignition switch off

Below 1.5 V

(c) Connect the V11 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 V11 forward recognition with heater hood sub-assembly connector.

(b) Disconnect the V10 forward recognition camera connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

V11-2 (HTR) - V10-1 (HTR)

Always

Below 1 Ω

V11-2 (HTR) or V10-1 (HTR) - Body ground

Always

10 kΩ or higher

(d) Connect the V10 forward recognition camera connector.

(e) Connect the V11 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)

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    Categories

    Turning the Engine Off

    Stop the vehicle completely. Manual transaxle: Shift into neutral and set the parking brake.

    Automatic transaxle: Shift the selector lever to the P position and set the parking brake.

    Press the push button start to turn off the engine. The ignition position is off.

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