B2056

PRE-COLLISION: PRE-COLLISION SYSTEM: B2056: Axial Gap of Radar Sensor
B2056 - Axial Gap of Radar Sensor

DESCRIPTION

This DTC is stored when the millimeter wave radar sensor beam axis does not match the direction of vehicle travel. DTC B2056 for the pre-collision system or DTC P1572 for the dynamic radar cruise control system will be stored unless radar sensor adjustment is performed after the millimeter wave radar sensor assembly is installed.





INSPECTION PROCEDURE

NOTICE:
When the seat belt control ECU is replaced with a new one, INITIALIZATION must be performed Pre-Collision System.

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 How to Proceed With Troubleshooting
OK -- Continue to next step.

2. CHECK DTC OUTPUT (DYNAMIC RADAR CRUISE CONTROL SYSTEM)

(a) Turn the cruise control main switch on.

(b) Drive the vehicle at a speed of 25 mph (40 km/h) or more.

(c) Check DTC for dynamic radar cruise control system Dynamic Radar Cruise Control System.

OK:

DTC P1572 is not output.

NG -- GO TO DYNAMIC RADAR CRUISE CONTROL SYSTEM
OK -- Continue to next step.

3. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM)

(a) Clear the DTCs Pre-Collision System.

(b) Recheck for DTCs.

OK:

DTC B2056 is not output.

NG -- REPLACE SEAT BELT CONTROL ECU

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting