B2002

PRE-COLLISION: PRE-COLLISION SYSTEM: B2002: Open in Seat Belt Motor RH Circuit

DTC B2002 - Open in Seat Belt Motor RH Circuit

DESCRIPTION

The seat belt control ECU receives information from the seat belt control ECU (distance control ECU) through CAN communication and tightens the seat by operating the motor in the front seat outer belt assembly RH.
CAUTION:
The pretension is built into the front seat outer belt assembly RH. Be sure to follow the correct inspection procedure, as failure to follow the correct procedure (such as inspection of incorrect connectors) may activate the pretension.





WIRING DIAGRAM





INSPECTION PROCEDURE
NOTICE:
When the seat belt control ECU is replaced with a new one, Active Test must be performed. Pre-Collision System

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT ASSEMBLY RH - SEAT BELT CONTROL ECU)





(a) Disconnect the negative (-) terminal battery.
(b) Disconnect the connectors seat belt control ECU and front seat outer belt assembly RH.
(c) Using a service wire, connect U8-1 and U8-2 of the connector on the front seat outer belt assembly RH side.
NOTICE:
Do not forcibly insert a service wire into the terminals of a connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. CHECK FRONT SEAT OUTER BELT ASSEMBLY RH
(a) Disconnect the connectors seat belt control ECU and front seat outer belt assembly RH.





(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH
OK -- REPLACE SEAT BELT CONTROL ECU