PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:C1A47

DTC Code DTC Name
C1A47 Steering Angle Sensor

DESCRIPTION

The brake booster with master cylinder (skid control ECU) receives steering rotation angle information from the steering angle sensor, and sends the information to the driving support ECU through the CAN communication line.

If the brake booster with master cylinder (skid control ECU) detects a malfunction of the steering angle sensor, it sends a malfunction signal to the driving support ECU and records a DTC.

DTC No. DTC Detection Condition Trouble Area
C1A47 When the vehicle speed is 50 km/h (30 mph) or more, a steering angle sensor malfunction signal is received from the brake booster with master cylinder (skid control ECU).

  • Steering angle sensor

  • Brake booster with master cylinder (skid control ECU)

  • CAN communication system

  • Power management control ECU

  • Driving support ECU

INSPECTION PROCEDURE

Tech Tips

This circuit uses CAN communication. Therefore, be sure to check that the CAN communication system is normal before performing inspection Click here.

PROCEDURE


  1. CHECK DTC OUTPUT (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)


    1. Check DTCs for the electronically controlled brake system Click here.

      OK
      Electronically controlled brake system DTC is not output.

    NG

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM Click here

    OK

  2. REPLACE BRAKE BOOSTER WITH MASTER CYLINDER


    1. Replace the brake booster with master cylinder (skid control ECU) Click here for LHD, Click here for RHD).


    NEXT

  3. CHECK DTC OUTPUT (PRE-CRASH SAFETY SYSTEM)


    1. Using the intelligent tester, enter the following menus: Body / Pre-Crash 2 / DTC.

    2. Clear the DTCs Click here.

    3. Drive the vehicle.

    4. Recheck for DTCs.

      OK
      DTC C1A47 is not output.

    NG

    REPLACE DRIVING SUPPORT ECU Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION ) Click here