LANE-KEEPING ASSIST SYSTEM, Diagnostic DTC:C1A70

DTC Code DTC Name
C1A70 Power Steering Control System

DESCRIPTION

When the lane departure warning function operates, the driving support ECU sends a signal to the power steering ECU to operate the steering motor.

DTC Code DTC Detection Condition Trouble Area
C1A70 When vehicle speed is 50 km/h (31 mph) or more with lane-keeping assist switch ON, malfunction signal of power steering system is input to driving support ECU

  • Power steering system

  • CAN communication system

  • Driving support ECU

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK FOR DTC (POWER STEERING SYSTEM)


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      Result
      Result Proceed to
      Only C1A70 is output A
      C1A70 and power steering system DTC are output B

      Tech Tips

      If DTC C1A70 is output even after troubleshooting the power steering system, replace the driving support ECU.


    B

    GO TO POWER STEERING SYSTEM Click here

    A

    REPLACE DRIVING SUPPORT ECU Click here