DTC    42    Electronically Controlled Brake System Malfunction

DTC    45    Electronically Controlled Brake System Malfunction

for Preparation Click here


DESCRIPTION

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

DTC Code
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

INSPECTION PROCEDURE

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

1.CHECK ELECTRONICALLY CONTROLLED BRAKE SYSTEM

  1. Clear the DTCs (Click here).

  1. Turn the power switch on (READY).

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

  1. Check if the same DTC is recorded (Click here).

    Result:

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

  1. Clear the DTCs (Click here).

  1. Turn the power switch on (READY).

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

  1. Check if the same DTC is recorded (Click here).

    Result:

    Result
    		Proceed to
    DTCs (42 and 45) are not output
    		A
    DTCs (42 and/or 45) are output (for LHD)
    		B
    DTCs (42 and/or 45) are output (for RHD)
    		C



B
REPLACE BRAKE BOOSTER WITH MASTER CYLINDER (Click here)

C
REPLACE BRAKE BOOSTER WITH MASTER CYLINDER (Click here)
A

CHECK FOR INTERMITTENT PROBLEMS (Click here)