LANE DEPARTURE ALERT SYSTEM, Diagnostic DTC:C1AA0

DTC Code DTC Name
C1AA0 Front Camera Module Circuit

DESCRIPTION

DTC C1AA0 is stored when the pre-collision 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 pre-collision system is enabled, the pre-collision city sensor detects an internal circuit malfunction for 5 seconds or more.

  • Pre-collision city sensor

  • Harness or connector

WIRING DIAGRAM

B464289E23

CAUTION / NOTICE / HINT

Note:

  • 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 Optical Axis Learning.

    Tip:

    Pre-collision City Sensor Optical Axis Learning can be performed by using either One Time Recognition or Sequential Recognition.

    One Time Recognition:Click here

    Sequential Recognition: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. 1 fuse from the driver side 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. 1 fuse holder terminal 2 - TSS C HTR relay holder terminal 1

      • Positive (+) tester probe → ECU-IG NO. 1 fuse holder terminal 2

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

      Always

      Below 1 Ω

      • Negative (-) tester probe → ECU-IG NO. 1 fuse holder terminal 2

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

      Always

      10 kΩ or higher

    4. Disconnect the M4 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

      M4-8 (BUZ) - TSS C HTR relay holder terminal 1

      • Positive (+) tester probe → M4-8 (BUZ)

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

      Always

      Below 1 Ω

      • Negative (-) tester probe → M4-8 (BUZ)

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

      Always

      10 kΩ or higher

    6. Connect the M4 pre-collision city sensor connector.

    7. Install the TSS C HTR relay.

    8. Install the ECU-IG NO. 1 fuse to the driver side junction block assembly.

    Result

    Proceed to

    OK

    NG
    NG

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

    OK

  3. REPLACE PRE-COLLISION CITY SENSOR

    1. Replace the pre-collision city sensor.

      Click here

    2. Perform Pre-collision City Sensor Optical Axis Learning.

      Tip:

      Pre-collision City Sensor Optical Axis Learning can be performed by using either One Time Recognition or Sequential Recognition.

      One Time Recognition:Click here

      Sequential Recognition: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-COLLISION CITY SENSOR

    1. Replace the pre-collision city sensor.

      Click here

    2. Perform Pre-collision City Sensor Optical Axis Learning.

      Tip:

      Pre-collision City Sensor Optical Axis Learning can be performed by using either One Time Recognition or Sequential Recognition.

      One Time Recognition:Click here

      Sequential Recognition:Click here

    Result

    Proceed to

    NEXT
    NEXT

    END