LANE DEPARTURE ALERT SYSTEM, Diagnostic DTC:C1AA0

DTC Code DTC Name
C1AA0 Front Camera Module Circuit

DESCRIPTION

DTC C1AA0 is output when an internal circuit malfunction in the pre-collision city sensor is detected.

DTC No. DTC Detection Condition Trouble Area
C1AA0 Pre-collision city sensor detects an internal malfunction.

  • Pre-collision city sensor

  • Harness or connector (w/ Pre-collision City Heater)

WIRING DIAGRAM

Figure 1. w/ Pre-collision City Heater:

A002M8SE03

CAUTION / NOTICE / HINT

Note


  • w/ Pre-collision City Heater:

    Inspect the fuses for circuits related to this system before performing the following procedure.

  • When replacing the pre-collision city sensor, replace it with a new one and be sure to initialize the settings. If a pre-collision city sensor which was installed to another vehicle is used, the information stored in the pre-collision city sensor will not match the information from the vehicle and, as a result, a DTC may be stored.

  • If the pre-collision city sensor has been replaced, or the windshield glass has been replaced or removed/installed, be sure to perform Pre-collision City Sensor Learning Click here.

PROCEDURE


  1. CHECK FOR DTCs


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / PCS/LDA/RSA/LVN / Trouble Codes.

    5. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC C1AA0 is not output A
      DTC C1AA0 is output (w/o Pre-collision City Heater) B
      DTC C1AA0 is output (w/ Pre-collision City Heater) C

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE PRE-COLLISION CITY SENSOR Click here

    C

  2. CHECK HARNESS AND CONNECTOR (TSS C HTR RELAY (RELAY) COIL SIDE CIRCUIT)


    1. A002PC7C01
      *1 Instrument Panel Junction Block Assembly
      *2 ECU-IG NO.3 Fuse

      Remove the ECU-IG NO.3 fuse.

    2. Remove the TSS C HTR relay (relay).

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      ECU-IG NO.3 fuse holder terminal 2 - TSS C HTR relay (relay) holder terminal 1

      Positive (+) tester probe → ECU-IG NO.3 fuse holder terminal 2

      Negative (-) tester probe → TSS C HTR relay (relay) holder terminal 1

      		 Always Below 1 Ω
      ECU-IG NO.3 fuse holder terminal 2 - TSS C HTR relay (relay) holder terminal 1

      Positive (+) tester probe → TSS C HTR relay (relay) holder terminal 1

      Negative (-) tester probe → ECU-IG NO.3 fuse holder terminal 2

      		 Always 10 kΩ or higher

    4. Disconnect the Q12 pre-collision city sensor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q12-8 (BUZ) - TSS C HTR relay (relay) holder terminal 1

      Positive (+) tester probe → Q12-8 (BUZ)

      Negative (-) tester probe → TSS C HTR relay (relay) holder terminal 1

      		 Always Below 1 Ω
      Q12-8 (BUZ) - TSS C HTR relay (relay) holder terminal 1

      Positive (+) tester probe → TSS C HTR relay (relay) holder terminal 1

      Negative (-) tester probe → Q12-8 (BUZ)

      		 Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE PRE-COLLISION CITY SENSOR Click here

    NG

  3. REPAIR OR REPLACE HARNESS OR CONNECTOR (TSS C HTR RELAY (RELAY) COIL SIDE CIRCUIT)


    1. Repair or replace the harness or connector.


    NEXT

  4. REPLACE PRE-COLLISION CITY SENSOR


    1. Replace the pre-collision city sensor Click here.

    2. Perform Pre-collision City Sensor Learning Click here.


    NEXT

    END