PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:B2085

DTC Code DTC Name
B2085 Communication Error from Driving Support ECU to VSC ECU

DESCRIPTION

This DTC is stored when CAN communication between the driving support ECU assembly and brake booster with master cylinder assembly (skid control ECU) is interrupted.

This circuit consists of the driving support ECU assembly, brake booster with master cylinder assembly (skid control ECU) and seat belt control ECU. DTC B2085 is stored when the seat belt control ECU detects an interruption in CAN communication between the driving support ECU assembly and brake booster with master cylinder assembly (skid control ECU).

DTC No. DTC Detection Condition Trouble Area
B2085 The brake booster with master cylinder assembly (skid control ECU) detects an interruption in CAN communication between the driving support ECU assembly and brake booster with master cylinder assembly (skid control ECU) for 1 second or more.

  • CAN communication system

  • Seat belt control ECU

CAUTION / NOTICE / HINT

Tech Tips

This circuit uses CAN communication. Therefore, be sure to check that the CAN communication system is normal before performing inspection.

PROCEDURE


  1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM)


    1. Clear the DTCs Click here.

    2. Check for DTCs.

      OK
      CAN communication system DTCs are not output.

    NG

    GO TO CAN COMMUNICATION SYSTEM Click here

    OK

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


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Pre-Crash / Trouble Codes.

    5. Clear the DTCs Click here.

    6. Recheck for DTCs.

      OK
      DTC B2085 is not output.

    OK

    CHECK FOR INTERMITTENT PROBLEMS (SYMPTOMS SIMULATION) Click here

    NG

    REPLACE SEAT BELT CONTROL ECU Click here