B2057

PRE-COLLISION: PRE-COLLISION SYSTEM: B2057: Yaw Rate Sensor
B2057 - Yaw Rate Sensor

DESCRIPTION

This DTC is stored 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 through CAN communication.





INSPECTION PROCEDURE

NOTICE:
* When the seat belt control ECU is replaced with a new one, Initialization must be performed Pre-Collision System.
* When the distance control ECU is replaced with a new one, Initialization must be performed Installation.
PROCEDURE

1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM)

(a) Clear the DTCs Pre-Collision System.

(b) Recheck for DTCs.

OK:

CAN communication system DTC is not output.

NG -- GO TO CAN COMMUNICATION SYSTEM
OK -- Continue to next step.

2. CHECK DTC (BRAKE CONTROL SYSTEM)

(a) Clear the DTC (Vehicle stability control system: Vehicle Stability Control System, Electronically controlled brake system: Electronically Controlled Brake System).

(b) Recheck for DTCs.

OK:

Brake control system DTC is not output.

NG -- GO TO BRAKE CONTROL SYSTEM
OK -- Continue to next step.

3. REPLACE DISTANCE CONTROL ECU

(a) Replace the distance control ECU Removal.

(b) Initialize the distance control ECU Installation.

NEXT -- Continue to next step.

4. CHECK DTC (PRE-COLLISION SYSTEM)

(a) Clear the DTC Pre-Collision System.

(b) Recheck for DTCs.

OK:

DTC B2057 is not output.

NG -- REPLACE SEAT BELT CONTROL ECU

OK -- END