FORWARD RECOGNITION CAMERA SYSTEM, Diagnostic DTC:C1AAE

DTC Code DTC Name
C1AAE Heater Circuit

DESCRIPTION

The forward recognition camera turns the forward recognition with heater hood sub-assembly on or off.

C1AAE is stored when the forward recognition camera detects a malfunction in the forward recognition with heater hood sub-assembly circuit.

DTC No. DTC Detection Condition Trouble Area
C1AAE

    Either of the following conditions is met after 2 seconds have elapsed since the engine 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

B001XBVE03
*a from IG Circuit
*b ECU-IG NO. 3
*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 learning.

    Click here

PROCEDURE


  1. CHECK DTC OUTPUT (FORWARD RECOGNITION CAMERA SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the engine 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

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

      Tech Tips

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


      1. Turn the engine switch on (IG) and wait 7 seconds or more.

    7. Check for DTCs.

      Click here

      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. B001ZLMC03
      *a

      Component without harness connected

      (Forward Recognition with Heater Hood Sub-assembly)

      Disconnect the R26 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. B001XDJC15
      *a

      Front view of wire harness connector

      (to Forward Recognition with Heater Hood Sub-assembly)

      Disconnect the R26 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
      R26-1(IG1) - Body ground Engine switch on (IG) 11 to 14 V
      Engine 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 R20 forward recognition camera connector.

    2. Disconnect the R26 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
      R20-1 (HTR) - R26-2 (HTR) Always Below 1 Ω
      R20-1 (HTR) or R26-2 (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 R20 forward recognition camera connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R20-10 (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