PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:C1A50

DTC Code DTC Name
C1A50 Brake System

DESCRIPTION

During vehicle-to-vehicle distance control mode, when the actual vehicle speed exceeds the set vehicle speed, such as on a steep downhill slope, etc., the driving support ECU sends a brake control signal to the brake actuator assembly, and deceleration control is performed together with throttle valve control. When a malfunction occurs in the electronically controlled brake system which is controlled by the brake actuator assembly, this DTC is stored.

DTC Code DTC Detection Condition Trouble Area
C1A50 When the radar cruise control system is operating, the input malfunction signal from the skid control ECU assembly continues for 0.2 seconds or more.

  • Electronically controlled brake system

  • Driving support ECU

INSPECTION PROCEDURE

Note

When replacing the driving support ECU, always replace it with a new one and be sure to perform initialization Click here. If an ECU which was installed to another vehicle is used, the information stored in the ECU will not match the information from the vehicle, and as a result, a DTC may be stored.

PROCEDURE


  1. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      Electronically controlled brake system DTCs are not output.

    NG

    GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM Click here

    OK

    REPLACE DRIVING SUPPORT ECU Click here