Dtc B2057 Yaw Rate Sensor

Restraints. Lexus Is250, Is220D. Gse20 Ale20
Pre-Crash Safety. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

INSPECTION PROCEDURE

CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM)

CHECK DTC OUTPUT (BRAKE CONTROL SYSTEM)

CHECK DTC OUTPUT (PRE-CRASH SAFETY SYSTEM)

DTC B2057 Yaw Rate Sensor


DESCRIPTION

This DTC is output when a malfunction in the yaw rate sensor is detected. This circuit consists of the yaw rate sensor and seat belt control ECU. Signals are sent from the yaw rate sensor using CAN communication.

DTC No.
DTC Detection Condition
Trouble Area
B2057
Malfunction in yaw rate sensor
  1. Yaw rate sensor
  2. Seat belt control ECU

INSPECTION PROCEDURE

NOTICE:
When the seat belt control ECU is replaced with a new one, INITIALIZATION must be performed (Click here).
1.CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM)

  1. Delete the DTC (Click here).

  1. Recheck for DTC.

    OK:
    DTC U0123 is not output.


NG
GO TO CAN COMMUNICATION SYSTEM
OK


2.CHECK DTC OUTPUT (BRAKE CONTROL SYSTEM)

  1. Delete the DTC (Click here).

  1. Recheck for DTC.

    OK:
    DTC C1234 is not output.


NG
GO TO BRAKE CONTROL SYSTEM
OK


3.CHECK DTC OUTPUT (PRE-CRASH SAFETY SYSTEM)

  1. Delete the DTC (Click here).

  1. Recheck for DTC.

    OK:
    DTC B2057 is not output.


NG
REPLACE SEAT BELT CONTROL ECU
OK

USE SIMULATION METHOD TO CHECK