B2090

PRE-COLLISION: PRE-COLLISION SYSTEM: B2090: Driving Support System Malfunction

DTC B2090 - Driving Support System Malfunction

DESCRIPTION

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, 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, PRE-COLLISION 2*1 or Pre-Collision 2*2) are also output.
HINT: *1: for Intelligent tester
*2: for Techstream
HINT: If the object recognition camera is replaced with a new one and the adjustment of the object recognition camera has not been performed, DTC B2090 is output.





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.

PROCEDURE

1. CHECK FOR DTC (DRIVING SUPPORT SYSTEM)
(a) Using the intelligent tester or Techstream, enter the following menus:
(1) Intelligent tester - Select: DIAGNOSIS / OBD/MOBD / PRE-COLLISION 2 or RADAR CRUISE / DTC INFO.
(2) Techstream - Select: Powertrain or Body Electrical / Pre-Collision 2 or Radar Cruise / Trouble Code.
(b) Check for DTCs.

Result





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

B -- GO TO RELEVANT FLOWCHART
A -- Continue to next step.
2. ADJUST OBJECT RECOGNITION CAMERA
(a) Adjust the object recognition camera Adjustments.
NEXT -- Continue to next step.
3. CHECK FOR DTC
(a) Using the intelligent tester or Techstream, enter the following menus:
(1) Intelligent tester - Select: DIAGNOSIS / OBD/MOBD / PRE-COLLISION 1 / DTC INFO.
(2) Techstream - Select: Body Electrical / Pre-Collision 1 / Trouble Code.
(b) Select "CLEAR" and clear the data.
(c) Recheck for DTC.
OK:
DTC B2090 is not output.
NG -- REPLACE SEAT BELT CONTROL ECU
OK -- END