B2090

DTC B2090 Driving Support System Malfunction

DESCRIPTION

DTC Detection Condition:

The seat belt control ECU receives collision information from the driving support ECU and skid control ECU via CAN communication, and tightens the seat belt by operating the motor inside the front seat outer belt assembly.

When the driving support ECU detects a malfunction in the dynamic radar cruise control system, lane keeping assist system, and pre-collision system ("PRE-COLLISION 2*1 or Pre-Collision 2*2" part), or detects that the object recognition camera has not been adjusted, the malfunction information is sent to the seat belt control ECU, which outputs this DTC.

When DTC B2090 is detected, other DTCs output by the driving support ECU (dynamic radar cruise control system, and pre-collision 2 also are output.

HINT:
*1: for Intelligent tester
*2: for Techstream

Step 1:

Step 2:

INSPECTION PROCEDURE

HINT: When clearing the DTCs, first clear the DTC output from the driving support ECU, and then clear the DTC output from the seat belt control ECU.