PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:C1A47

DTC Code DTC Name
C1A47 Steering Angle Sensor

DESCRIPTION

The driving support ECU assembly receives steering angle information from the spiral cable with sensor sub-assembly (steering sensor). If the driving support ECU assembly detects a spiral cable with sensor sub-assembly (steering sensor) malfunction, DTC C1A47 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1A47 Steering Angle Sensor While the vehicle is being driven at a speed of 50 km/h (31 mph) or more, the driving support ECU assembly receives a spiral cable with sensor sub-assembly (steering sensor) malfunction signal continuously for 1 second or more.

  • Vehicle stability control system

  • Spiral cable with sensor sub-assembly (steering sensor)

  • Driving support ECU assembly

CAUTION / NOTICE / HINT

Note


  • 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.

  • The pre-crash safety system uses the CAN communication system. First, confirm that there are no malfunction in the CAN communication system. Refer to How to Proceed with Troubleshooting.

    for LHD:

    Click here

    for RHD:

    Click here

PROCEDURE


  1. CHECK FOR DTCs (VEHICLE STABILITY CONTROL SYSTEM)

    Tech Tips

    Pre-crash safety system DTC C1A47 may be stored due to a malfunction in the VSC system. Therefore, it is necessary to check for and troubleshoot VSC system DTCs first.


    1. Check for DTCs.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      Vehicle stability control system DTCs are not output A
      Vehicle stability control system DTCs are output B

    B

    GO TO VEHICLE STABILITY CONTROL SYSTEM Click here

    A

  2. CHECK FOR DTCs (PRE-CRASH SAFETY SYSTEM)


    1. Clear the DTCs.

      Click here


      Body Electrical > Pre-Crash 2 > Clear DTCs

    2. Perform the following procedure.

      Tech Tips

      If the following procedure is not performed, the previously output DTC cannot be detected.


      1. Drive the vehicle at a speed of 50 km/h (32 mph) or more.

    3. Check for DTCs.

      Click here


      Body Electrical > Pre-Crash 2 > Trouble Codes
      Result
      Result Proceed to
      DTC C1A47 is not output A
      DTC C1A47 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

  3. REPLACE DRIVING SUPPORT ECU ASSEMBLY


    1. Replace the driving support ECU assembly.

      Result
      Proceed to
      NEXT

    NEXT

  4. CHECK FOR DTCs (PRE-CRASH SAFETY SYSTEM)


    1. Clear the DTCs.

      Click here


      Body Electrical > Pre-Crash 2 > Clear DTCs

    2. Perform the following procedure.

      Tech Tips

      If the following procedure is not performed, the previously output DTC cannot be detected.


      1. Drive the vehicle at a speed of 50 km/h (32 mph) or more.

    3. Check for DTCs.

      Click here


      Body Electrical > Pre-Crash 2 > Trouble Codes
      Result
      Result Proceed to
      DTC C1A47 is not output A
      DTC C1A47 is output B

    A

    END (DRIVING SUPPORT ECU ASSEMBLY WAS DEFECTIVE)

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) for LHD: REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here
    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) for RHD: REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here