POWER STEERING SYSTEM, Diagnostic DTC:C1541/13

DTC Code DTC Name
C1541/13 Vehicle Speed Signal

DESCRIPTION

The power steering ECU assembly receives vehicle speed signals from the brake booster with master cylinder assembly via CAN communication. The ECU provides appropriate assisting force in accordance with the vehicle speed based on the signals.

If the ECU detects this DTC, it adjusts the amount of power assistance for a speed of 140 km/h (87 mph) and continues system control.

DTC No. DTC Detection Condition Trouble Area
C1541/13 This DTC is detected when vehicle speed signals via CAN communication are cut off for 3 seconds or more.

  • Speed sensor circuit

  • Brake booster with master cylinder assembly

  • CAN communication system

  • Power steering ECU assembly

INSPECTION PROCEDURE

Note

If the power steering ECU assembly has been replaced, perform assist map writing Click here.

PROCEDURE


  1. CHECK OTHER DTC OUTPUT (CAN COMMUNICATION SYSTEM)


    1. Check if DTC U0129/42 is output Click here.

      Result
      Result Proceed to
      U0129/42 is not output A
      U0129/42 is output B

      Tech Tips

      DTC U0129/42 indicates a brake booster with master cylinder assembly communication malfunction in the power steering system.


    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. CHECK OTHER DTC OUTPUT (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)


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

      OK
      Electronically controlled brake system DTCs are not output.

    NG

    REPAIR CIRCUIT INDICATED BY OUTPUT CODE Click here

    OK

    REPLACE POWER STEERING ECU ASSEMBLY Click here