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PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:C1A48

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DTC Code DTC Name
C1A48 G Sensor
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DESCRIPTION

The pre-crash safety city sensor receives G sensor signals from the airbag sensor assembly (yaw rate sensor) and outputs this DTC when a G sensor malfunction is received.

DTC Code DTC Detection Condition DTC Detection Condition
C1A48 Once 3 seconds or more elapse after the ignition switch is turned to ON, the pre-crash safety city sensor continuously receives a G sensor malfunction from the airbag sensor assembly (yaw rate sensor) for 5 seconds or more while the IG voltage is 10 V or more.

  • Vehicle stability control system

  • Airbag sensor assembly (yaw rate sensor)

  • Pre-crash safety city sensor
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CAUTION / NOTICE / HINT

Note:

  • When replacing the pre-crash safety city sensor, replace it with a new one. If an ECU 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 output.

  • 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.

  • 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 to troubleshooting (Click here).

  • Perform adjustment using "ONE TIME RECOGNITION" or "SEQUENTIAL RECOGNITION".


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PROCEDURE


  1. Click here

    CHECK FOR DTCs (VEHICLE STABILITY CONTROL SYSTEM)


    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 / ABS/VSC/TRC / Trouble Codes.

    5. Check for DTCs (Click here).

      Table 1. Result
      Result Proceed to
      Vehicle stability control system DTCs are not output A
      Vehicle stability control system DTCs are output B

  2. Click here

    CHECK FOR DTCs


    1. Clear the DTCs (Click here).

    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).

      Table 2. Result
      Result Proceed to
      DTC C1A48 is not output A
      DTC C1A48 is output B

  3. Click here

    REPLACE PRE-CRASH SAFETY CITY SENSOR


    1. Replace the pre-crash safety city sensor.

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    2. Perform pre-crash safety city sensor learning.


      • Perform adjustment using "ONE TIME RECOGNITION" or "SEQUENTIAL RECOGNITION".



  4. Click here

    CHECK FOR DTCs


    1. Clear the DTCs (Click here).

    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).

      Table 3. Result
      Result Proceed to
      DTC C1A48 is not output A
      DTC C1A48 is output B

    • A

      END (PRE-CRASH SAFETY CITY SENSOR WAS DEFECTIVE)

    • B

      REPLACE AIRBAG SENSOR ASSEMBLY (YAW RATE SENSOR) (Click here)