FORWARD RECOGNITION CAMERA SYSTEM, Diagnostic DTC:C1AAE

DTC Code DTC Name
C1AAE Heater Circuit

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

C1AAE

Heater Circuit

  • Either of the following conditions is met after 2 seconds have elapsed since the power switch was turned on (IG):

  • 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

  • Harness or connector

WIRING DIAGRAM

A398326E11

CAUTION / NOTICE / HINT

Note:

  • 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 Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust.

    Click here

PROCEDURE

  1. CHECK DTC OUTPUT

    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / Front Recognition Camera / Trouble Codes.

    5. Clear the DTCs.

      Click here

      Chassis > Front Recognition Camera > Clear DTCs

    6. Make sure that the DTC detection conditions are met.

      Tip:

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

      1. Wait 7 seconds or more after turning the power switch on (IG).

    7. Check for DTCs.

      Click here

      Chassis > Front Recognition Camera > Trouble Codes

    Result

    Result

    Proceed to

    DTC C1AAE is not output

    A

    DTC C1AAE is output

    B
    A

    USE SIMULATION METHOD TO CHECK

    Click hereClick hereClick here

    B

  2. INSPECT FORWARD RECOGNITION WITH HEATER HOOD SUB-ASSEMBLY

    1. C373924C04

      *a

      Component without harness connected

      (Forward Recognition with Heater Hood Sub-assembly)

      Disconnect the Q18 forward recognition with heater hood sub-assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      1 (IG1) - 2 (HTR)

      Always

      38 to 42 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE FORWARD RECOGNITION WITH HEATER HOOD SUB-ASSEMBLY

    Click here

    OK

  3. CHECK TERMINAL VOLTAGE (FORWARD RECOGNITION WITH HEATER HOOD SUB-ASSEMBLY POWER SOURCE VOLTAGE)

    1. C373925C06

      *a

      Front view of wire harness connector

      (to Forward Recognition with Heater Hood Sub-assembly)

      Disconnect the forward recognition with heater hood sub-assembly connector.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      Q18-1 (IG1) - Body ground

      Power switch on (IG)

      11 to 14 V

      Power switch off

      Below 1 V

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    1. Disconnect the Q18 forward recognition with heater hood sub-assembly connector.

    2. Disconnect the Q17 forward recognition camera connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      Q18-2 (HTR) - Q17-1 (HTR)

      Always

      Below 1 Ω

      Q18-2 (HTR) or Q17-1 (HTR) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (FORWARD RECOGNITION CAMERA - BODY GROUND)

    1. Disconnect the Q17 forward recognition camera connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      Q17-10 (GND) - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE FORWARD RECOGNITION CAMERA

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR