FORWARD RECOGNITION CAMERA SYSTEM, Diagnostic DTC:C1AAE

DTC Code DTC Name
C1AAE Heater Circuit

DESCRIPTION

The forward recognition camera controls the current supplied to the pre-collision city heater (forward recognition hood).

DTC No. Detection Item DTC Detection Condition Trouble Area
C1AAE Heater Circuit

When the ignition switch is turned to ON and one of the following conditions is met:


  • While a pre-collision city heater ON request is being sent, a short circuit malfunction is detected in the pre-collision city heater for 5 seconds or more.

  • While a pre-collision city heater ON request is not being sent, an open circuit or ground short malfunction is detected in the pre-collision city heater for 5 seconds or more.

  • Pre-collision city heater (forward recognition hood)

  • Forward recognition camera

  • Harness or connector
DTC Detection Conditions
Vehicle Condition Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition Ignition switch ON ○ ○
Malfunction Status

  • While a pre-collision city heater ON request is being sent, a short circuit malfunction is detected in the pre-collision city heater.

 ○

  • While a pre-collision city heater ON request is not being sent, an open circuit or ground short malfunction is detected in the pre-collision city heater.

 ○
Detection Time 5 seconds or more 5 seconds or more
Number of Trips 1 trip 1 trip

Tech Tips

If any of the detection patterns above are met, a DTC is output.

WIRING DIAGRAM

A001WU8E03

CAUTION / NOTICE / HINT

Note


  • w/o Stop and Start System: 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 it will not match the information from the vehicle and a DTC may be stored.

  • After replacing or removing/installing the forward recognition camera or windshield glass, make sure to perform forward recognition camera axis adjustment.

    Click here

PROCEDURE


  1. CHECK FOR DTCs


    1. Clear the DTCs.

      Click here


      Chassis > Front Recognition Camera > Clear DTCs

    2. Set the vehicle conditions to the conditions when DTCs were detected.

    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. CHECK PRE-COLLISION CITY HEATER (FORWARD RECOGNITION HOOD)


    1. A001XB5C01
      *a

      Component without harness connected

      (Pre-collision City Heater (Forward Recognition Hood))

      Disconnect the pre-collision city heater (forward recognition hood) connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      1 (IG1) - 2 (HTR) Ignition switch off 36.1 to 39.9 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE PRE-COLLISION CITY HEATER (FORWARD RECOGNITION HOOD) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (PRE-COLLISION CITY HEATER (FORWARD RECOGNITION HOOD))


    1. A001SJTC01
      *a

      Front view of wire harness connector

      (to Pre-collision City Heater (Forward Recognition Hood))

      Disconnect the pre-collision city heater (forward recognition hood) connector.

    2. Disconnect the forward recognition camera connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      R8-1 (IG1) - Body ground Ignition switch ON 11 to 14 V
      R8-1 (IG1) - Body ground Ignition switch off Below 1.5 V
      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      R8-2 (HTR) - R5-1 (HTR) Ignition switch off Below 1 Ω
      R8-2 (HTR) or R5-1 (HTR) - Body ground Ignition switch off 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (PRE-COLLISION CITY HEATER (FORWARD RECOGNITION HOOD))

    OK

  4. REPLACE FORWARD RECOGNITION CAMERA


    1. Replace the forward recognition camera.

      Click here

    2. Perform Forward Recognition Camera Axis Adjustment.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    END