B2001

PRE-COLLISION: PRE-COLLISION SYSTEM: B2001: Short to GND in Seat Belt Motor RH Circuit
B2001 - Short to GND in Seat Belt Motor RH 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 RH.

When DTC B2001 is stored, DTCs B2015, B2026 and B2027 are not stored.





WIRING DIAGRAM





INSPECTION PROCEDURE

CAUTION:
The pretensioner 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 pretensioner.

PROCEDURE

1. CHECK FRONT SEAT OUTER BELT ASSEMBLY RH 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 RH - SEAT BELT CONTROL ECU)

OK -- REPLACE SEAT BELT CONTROL ECU Removal

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

(a) Disconnect the Q3 belt connector.





(b) Disconnect the G34 ECU connector.

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

Standard Resistance:





Text in Illustration





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH Removal