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

  • Wire harness or connector

WIRING DIAGRAM

B002L0AE35
*a from IG1 NO. 2 Relay
*b ECU-IG NO. 2
*c Forward Recognition with Heater Hood Sub-assembly
*d Forward Recognition Camera

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 forward recognition camera adjustment.

    Click here

PROCEDURE


  1. CHECK FOR DTCs (FORWARD RECOGNITION CAMERA SYSTEM)


    1. Clear the DTCs.

      Click here


      Chassis > Front Recognition Camera > Clear DTCs

    2. Perform the following procedure.

      Tech Tips

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

    3. 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 here

    B

  2. INSPECT FORWARD RECOGNITION WITH HEATER HOOD SUB-ASSEMBLY


    1. Turn the power switch off.

    2. B002ILBC24
      *a

      Component without harness connected

      (Forward Recognition with Heater Hood Sub-assembly)

      Disconnect the T18 forward recognition with heater hood sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T18-1 (IG1) - T18-2 (HTR) Power switch off 38 to 42 Ω

    4. Connect the T18 forward recognition with heater hood sub-assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FORWARD RECOGNITION WITH HEATER HOOD SUB-ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE VOLTAGE)


    1. B002KSHC29
      *a

      Front view of wire harness connector

      (to Forward Recognition with Heater Hood Sub-assembly)

      Disconnect the T18 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
      T18-1 (IG1) - Body ground Power switch on (IG) 11 to 14 V
      Power switch off Below 1.5 V

    3. Connect the T18 forward recognition with heater hood sub-assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

    OK

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


    1. Disconnect the T18 forward recognition with heater hood sub-assembly connector.

    2. Disconnect the T17 forward recognition camera connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      T18-2 (HTR) - T17-1 (HTR) Always Below 1 Ω
      T18-2 (HTR) or T17-1 (HTR) - Body ground Always 10 kΩ or higher

    4. Connect the T17 forward recognition camera connector.

    5. Connect the T18 forward recognition with heater hood sub-assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FORWARD RECOGNITION CAMERA Click here

    NG

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