ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:42, 45

DTC Code DTC Name
42 Electronically Controlled Brake System Malfunction
45 Electronically Controlled Brake System Malfunction

DESCRIPTION

These DTCs are stored if the ABS and/or VSC system detects a malfunction in the electronically controlled brake system.

DTC No. INF Code DTC Detection Condition Trouble Area
42 - Malfunction in the electronically controlled brake system. Electronically controlled brake system
45 - Malfunction in the electronically controlled brake system. Electronically controlled brake system

CAUTION / NOTICE / HINT

Note

When replacing the skid control ECU (brake booster with master cylinder assembly), perform initialization and calibration of the linear solenoid valve Click here.

PROCEDURE


  1. CHECK ELECTRONICALLY CONTROLLED BRAKE SYSTEM


    1. Clear the DTCs Click here.

    2. Turn the power switch on (READY).

    3. Drive the vehicle at a speed of approximately 40 km/h (25 mph) or more for 60 seconds or more.

    4. Check if electronically controlled brake system DTCs are output Click here.

      Result
      Result Proceed to
      Electronically controlled brake system DTC is not output. A
      Electronically controlled brake system DTC is output. B

    B

    REPAIR CIRCUITS INDICATED BY OUTPUT DTCS Click here

    A

  2. RECONFIRM DTC


    1. Turn the power switch off.

    2. Clear the DTCs Click here.

    3. Turn the power switch on (READY).

    4. Drive the vehicle at a speed of approximately 40 km/h (25 mph) or more for 60 seconds or more.

    5. Check if the same DTC is output Click here.

      Result
      Result Proceed to
      DTCs 42 and 45 are not output. A
      DTCs 42 and/or 45 are output. B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY Click here