LANE DEPARTURE ALERT SYSTEM, Diagnostic DTC:C1AA0

DTC Code DTC Name
C1AA0 Front Camera Module Circuit

DESCRIPTION

DTC C1AA0 is stored when the pre-crash safety city sensor detects an internal circuit malfunction.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AA0

Front Camera Module Circuit

When the ignition switch is ON and the lane departure alert system is enabled, the pre-crash safety city sensor detects an internal circuit malfunction for 5 seconds or more.

  • Pre-crash safety city sensor

  • Harness or connector

WIRING DIAGRAM

B464289E24

CAUTION / NOTICE / HINT

Note:

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

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

  • If the pre-crash safety city sensor has been replaced, or the windshield glass has been replaced or removed/installed, be sure to perform Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust.

    Click here

PROCEDURE

  1. CHECK FOR DTCS

    1. Check for DTCs.

      Click here

      Chassis > PCS/LDA/RSA/LVN > Trouble Codes

    Result

    Result

    Proceed to

    DTC C1AA0 is not output

    A

    DTC C1AA0 is output

    B
    A

    USE SIMULATION METHOD TO CHECK

    Click here

    B

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

    1. Remove the ECU-IG NO. 3 fuse from the instrument panel junction block assembly.

    2. Remove the TSS C HTR 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 holder terminal 2

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

      • Negative (-) tester probe → TSS C HTR relay holder terminal 2

      Always

      Below 1 Ω

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

      • Positive (+) tester probe → TSS C HTR relay holder terminal 2

      Always

      10 kΩ or higher

    4. Disconnect the O9 pre-crash safety city sensor connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      O9-8 (BUZ) - TSS C HTR relay holder terminal 2

      • Positive (+) tester probe → O9-8 (BUZ)

      • Negative (-) tester probe → TSS C HTR relay holder terminal 2

      Always

      Below 1 Ω

      • Negative (-) tester probe → O9-8 (BUZ)

      • Positive (+) tester probe → TSS C HTR relay holder terminal 2

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (TSS C HTR RELAY COIL CIRCUIT)Click here

    OK

  3. REPLACE PRE-CRASH SAFETY CITY SENSOR

    1. Replace the pre-crash safety city sensor.

      Click here

    2. Perform the "Recognition Camera/Target Position Memory" and "Recognition Camera Axis Adjust" of pre-crash safety city sensor.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    END

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

    1. Repair or replace the harness or connector.

    Result

    Proceed to

    NEXT
    NEXT

  5. REPLACE PRE-CRASH SAFETY CITY SENSOR

    1. Replace the pre-crash safety city sensor.

      Click here

    2. Perform the "Recognition Camera/Target Position Memory" and "Recognition Camera Axis Adjust" of pre-crash safety city sensor.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    END