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) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision / Trouble Codes.

(b) Clear the DTCs Pre-Collision System.

(c) 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 45 km/h (27 mph) 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 Dynamic Radar Cruise Control System
OK -- Continue to next step.

3. ADJUST MILLIMETER WAVE RADAR SENSOR

(a) Adjust the millimeter wave radar sensor Adjustments.

NEXT -- Continue to next step.

4. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM)

(a) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision / Trouble Codes.

(b) Clear the DTCs Pre-Collision System.

(c) Drive the vehicle.

(d) Recheck for DTCs.

OK:

DTC B2056 is not output.

NG -- REPLACE SEAT BELT CONTROL ECU Removal

OK -- CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) How To Proceed With Troubleshooting