B2085

PRE-COLLISION: PRE-COLLISION SYSTEM: B2085: Communication Error from Driving Support ECU to VSC ECU
B2085 - Communication Error from Driving Support ECU to VSC ECU

DESCRIPTION

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

This circuit consists of the driving support ECU, brake booster with master cylinder (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 and brake booster with master cylinder (skid control ECU).





INSPECTION PROCEDURE

HINT
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)

(a) Clear the DTCs Diagnosis System.

(b) Check for DTCs.

OK:

CAN communication system DTC is not output.

NG -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting
OK -- Continue to next step.

2. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM)

(a) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision / Trouble Codes.

(b) Clear the DTCs Pre-Collision System.

(c) Check for DTCs.

OK:

DTC B2085 is not output.

NG -- REPLACE SEAT BELT CONTROL ECU Removal

OK -- CHECK FOR INTERMITTENT PROBLEMS (SYMPTOMS SIMULATION) How To Proceed With Troubleshooting