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 (w/ Pre-crash Safety City Heater)

WIRING DIAGRAM

B464289E02
B464290E02

CAUTION / NOTICE / HINT

Note:

  • w/ Pre-crash Safety City Heater:

    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 hereClick here

PROCEDURE

  1. CHECK FOR DTCS

    1. Check if the stored DTCs are current DTCs.

    2. 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 (w/ Pre-crash Safety City Heater)

    B

    DTC C1AA0 is output (w/o Pre-crash Safety City Heater)

    C
    A

    USE SIMULATION METHOD TO CHECK

    Click hereClick hereClick here

    C

    REPLACE PRE-CRASH SAFETY CITY SENSORClick 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. except 1WW:

      1. Remove the TSS C HTR relay.

      2. 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

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

      4. 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

    3. for 1WW:

      1. Remove the EDU relay (No. 1 integration relay).

        Click here

      2. 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 - 1J-7

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

        • Negative (-) tester probe → 1J-7

        Always

        Below 1 Ω

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

        • Positive (+) tester probe → 1J-7

        Always

        10 kΩ or higher

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

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

        Standard Resistance

        Tester Connection

        Condition

        Specified Condition

        O9-8 (BUZ) - 1J-7

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

        • Negative (-) tester probe → 1J-7

        Always

        Below 1 Ω

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

        • Positive (+) tester probe → 1J-7

        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 hereClick here

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

      Click hereClick 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 hereClick here

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

      Click hereClick here

    Result

    Proceed to

    NEXT
    NEXT

    END