From 08/2009

PRE-COLLISION: PRE-COLLISION SYSTEM: B2015,B2016,B2020,B2021,B2025-B2027,B2030-B2032,B2035,B2040,B2041,B2043,B2047: Open in Right Side Upper MOS

B2015 - Open in Right Side Upper MOS
B2016 - Open in Right Side Lower MOS
B2020 - Open in Left Side Upper MOS
B2021 - Open in Left Side Lower MOS
B2025 - Right Side Current Detection Circuit Malfunction Hi
B2026 - Right Side Current Detection Circuit Malfunction Lo
B2027 - Right Side Over-Circuit Malfunction
B2030 - Left Side Current Detection Circuit Malfunction Hi
B2031 - Left Side Current Detection Circuit Malfunction Lo
B2032 - Left Side Over-Circuit Malfunction
B2035 - Power Supply Relay Adherence Malfunction
B2040 - EEPROM Malfunction
B2041 - Fall of Raised Voltage
B2043 - Fall of B+ Voltage
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 DTC OUTPUT

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

(b) Clear the DTCs Pre-Collision System.

(c) Turn the engine switch off.

(d) Turn the engine switch on (IG).

(e) Recheck for DTCs.

OK:

DTCs are not output.

NG -- REPLACE SEAT BELT CONTROL ECU

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