B2007

PRE-COLLISION: PRE-COLLISION SYSTEM: B2007: Open in Seat Belt Motor LH Circuit
B2007 - Open in Seat Belt Motor LH Circuit

DESCRIPTION

The seat belt control ECU receives collision information from the driving support ECU and skid control ECU via CAN communication and tightens the seat belt by operating the motor inside the front seat outer belt LH.

When DTC B2007 is stored, DTCs B2031 and B2032 are not stored.





WIRING DIAGRAM





INSPECTION PROCEDURE

CAUTION:
The pretensioner is built into the front seat outer belt assembly LH. 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.

PROCEDURE

1. CHECK FRONT SEAT OUTER BELT ASSEMBLY LH CIRCUIT

(a) Disconnect the G34 ECU connector.





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

Standard Resistance:





Text in Illustration





NG -- CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT LH - SEAT BELT CONTROL ECU)

OK -- REPLACE SEAT BELT CONTROL ECU Removal

2. CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT LH - SEAT BELT CONTROL ECU)

(a) Disconnect the G34 ECU connector.

(b) Disconnect the R4 belt connector.

(c) Using a service wire, connect terminals R4-1 (MOL+) and R4-2 (MOL-) of the connector of the front seat outer belt LH.

(d) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH Removal