B2001

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

DTC B2001 - Short to GND in Seat Belt Motor RH Circuit

DTC B2006 - Short to GND in Seat Belt Motor LH Circuit

DESCRIPTION

The seat belt control ECU receives information from the master cylinder solenoid (skid control ECU) via the CAN communication line and tightens the seat belt by operating the motor in the front seat outer belt assembly RH or LH.






WIRING DIAGRAM









INSPECTION PROCEDURE
CAUTION: The pretensioner is built into the front seat outer belt assembly. Be sure to follow the correct inspection procedure, as failure to follow the correct procedure (such as inspection of incorrect connectors) may deploy the pretensioner.

PROCEDURE

1. CHECK SEAT BELT CONTROL ECU





(a) Disconnect the E41 seat belt control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:

for LH





for RH





NG -- CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT - SEAT BELT CONTROL ECU)
OK -- REPLACE SEAT BELT CONTROL ECU
2. CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT - SEAT BELT CONTROL ECU)





(a) Disconnect the E41 seat belt control ECU connector.
(b) Disconnect the K11*1 or L5*2 front seat outer belt connector.
HINT:
- *1: for LH
- *2: for RH
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:

for LH





for RH





Result





C -- REPAIR OR REPLACE HARNESS OR CONNECTOR
B -- REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH
A -- REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH