B2021

PRE-COLLISION: PRE-COLLISION SYSTEM: B2015, B2016, B2020, B2021, B2025-B2027, B2030-B2032, B2035, B2040, B2041, B2043, B2047: Open in Right Side Upper MOS
B2047 - Seat Belt Control ECU Inner Circuit Malfunction

DESCRIPTION

The DTCs above are stored during seat belt control ECU self diagnosis.

HINT
* When DTC B2015 or B2016 is detected, DTCs B2026 and B2027 will not be detected.
* When DTC B2020 or B2021 is detected, DTCs B2031 and B2032 will not be detected.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC

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

(b) Clear the DTCs Pre-Collision System.

(c) Turn the ignition switch off.

(d) Turn the ignition switch to ON.

(e) Check for DTCs Pre-Collision System.

OK:

DTCs are not output.

NG -- REPLACE SEAT BELT CONTROL ECU Removal

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