PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:B2090

DTC Code DTC Name
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, lane-keeping assist system, and pre-crash safety system ("Pre-crash 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, lane-keeping assist system, pre-crash 2, and active headrest RH/LH) also are output.

Tech Tips

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.

DTC Code DTC Detection Condition Trouble Area
B2090 While initial check is running, engine switch is on (IG) and pre-crash safety system is operating, malfunction is detected in any one system of driving support system, or object recognition camera sensor initial beam axis adjustment has not been performed for 1 second

  • Driving support system

  • Seat belt control ECU

INSPECTION PROCEDURE

Tech Tips

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 DRIVING SUPPORT ECU


    1. Using the intelligent tester, enter the following menus: Body / Pre-Crash2, Cruise Control and Lane-keeping Assist /. Then select "Diagnostic Code".

    2. Check for DTCs.

      Result
      Result Proceed to
      "Pre-Crash 2", "Cruise Control" or "Lane-keeping Assist" DTC is not output A
      "Pre-Crash 2", "Cruise Control" or "Lane-keeping Assist" DTC is output B

    B

    GO TO RELEVANT FLOWCHART

    A

  2. ADJUST OBJECT RECOGNITION CAMERA SENSOR


    1. Adjust the object recognition camera sensor Click here.


    NEXT

  3. CHECK SEAT BELT CONTROL ECU


    1. Using the intelligent tester, enter the following menus: Body / Pre-Crash1 /. Then select "Diagnostic Code".

    2. Select "Clear" and clear the data.

    3. Recheck for DTC.

      OK
      DTC B2090 is not output.

    NG

    REPLACE SEAT BELT CONTROL ECU Click here

    OK

    END