Dtc B2055 Radar Sensor Malfunction

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

DESCRIPTION

INSPECTION PROCEDURE

CHECK DTC OUTPUT (DYNAMIC RADAR CRUISE CONTROL SYSTEM)

CHECK DTC OUTPUT (PRE-CRASH SAFETY SYSTEM)

DTC B2055 Radar Sensor Malfunction


DESCRIPTION

This DTC is output when one of the following occurs: 1) an error in communication with the millimeter wave radar sensor assembly is detected, or 2) vehicle information sent from the radar sensor assembly is abnormal. If output, perform initialization on the radar sensor assembly to register the vehicle information to the radar sensor assembly.

DTC No.
DTC Detection Condition
Trouble Area
B2055
Radar sensor assembly malfunction is detected or initialization settings are faulty
  1. Millimeter wave radar 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 (DYNAMIC RADAR CRUISE CONTROL SYSTEM)

  1. Delete the DTC (Click here).

  1. Recheck for DTC.

    OK:
    DTC P1570 is not output.


NG
GO TO DYNAMIC RADAR CRUISE CONTROL SYSTEM
OK


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

  1. Delete the DTC (Click here).

  1. Recheck for DTC.

    OK:
    DTC B2055 is not output.


NG
REPLACE SEAT BELT CONTROL ECU
OK

USE SIMULATION METHOD TO CHECK