PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:C1A10

DTC Code DTC Name
C1A10 Front Radar Sensor

DESCRIPTION

The driving support ECU assembly uses the millimeter wave radar sensor assembly to detect obstacles in front of the vehicle.

Based on this signals from the millimeter wave radar sensor assembly, the driving support ECU assembly sends pre-crash control operation signals.

When the driving support ECU assembly receives an internal malfunction signal from the millimeter wave radar sensor assembly, DTC C1A10 is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1A10

Front Radar Sensor

While the power switch is on (IG), the driving support ECU assembly receives information that there is a malfunction in the millimeter wave radar sensor assembly for approximately 0.2 seconds.

  • Millimeter wave radar sensor assembly

  • Driving support ECU assembly

CAUTION / NOTICE / HINT

Note:

  • First check the CAN communication system by following How to Proceed with Troubleshooting. After checking that there are no malfunctions in the CAN communication system, proceed with troubleshooting.

    Click here

  • When the millimeter wave radar sensor assembly is replaced with a new one, adjustment of the radar sensor beam axis must be performed.

    Click here

  • When replacing the driving support ECU assembly, always replace it with a new one. If a driving support ECU assembly which was installed to another vehicle is used, the information stored in the driving support ECU assembly will not match the information from the vehicle. As a result, a DTC may be stored.

PROCEDURE

  1. REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY

    1. Replace the millimeter wave radar sensor assembly with a new one.

      Click here

    2. Perform millimeter wave radar sensor assembly adjustment.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  2. CHECK FOR DTC

    1. Clear the DTCs.

      Click here

      Body Electrical > Pre-Crash 2 > Clear DTCs

    2. Make sure that the DTC detection conditions are met.

      Tip:

      If the detection conditions are not met, the system cannot detect the malfunction.

    3. Check for DTCs.

      Click here

      Body Electrical > Pre-Crash 2 > Trouble Codes

      OK

      DTC C1A10 is not output.

    Result

    Proceed to

    OK

    NG
    OK

    END (MILLIMETER WAVE RADAR SENSOR ASSEMBLY WAS DEFECTIVE)

    NG

    REPLACE DRIVING SUPPORT ECU ASSEMBLY

    for LHD:Click here

    for RHD:Click here