B2000

PRE-COLLISION: PRE-COLLISION SYSTEM: B2000: Short to B+ in Seat Belt Motor RH Circuit

DTC B2000 - Short to B+ in Seat Belt Motor RH Circuit

DESCRIPTION

The seat belt control ECU receives information from the distance control ECU through CAN communication and tightens the seat belt by operating the motor in the front seat outer belt RH.
CAUTION:
The pretensioner is built into the front seat outer belt 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 pretensioner.





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 WIRE HARNESS (FRONT SEAT OUTER BELT RH - SEAT BELT CONTROL ECU)




(a) Disconnect the negative (-) terminal cable from the battery.
(b) Disconnect the U8 belt connector.
(c) Disconnect the V42 ECU connector.
(d) Connect the negative (-) terminal cable to the battery.
(e) Measure the resistance and voltage of the wire harness side connector.
Standard resistance:






Standard voltage :






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2.
CHECK FRONT SEAT OUTER BELT ASSEMBLY RH




(a) Reconnect the U8 belt connector.
(b) Disconnect the V42 ECU connector.
(c) Measure the voltage of the belt.
Standard voltage:






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