GSIC - Global Service Information Center

DTC B2001 Short to GND 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 belt by operating the motor in the front seat outer belt assembly RH.

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.

DTC No.	DTC Detection Condition	Trouble Area
B2001	Short to ground in seat belt motor RH circuit continues for 1 second or more Short in seat belt motor RH circuit	Front seat outer belt assembly RH Wire harness (seat belt control ECU - front seat outer belt assembly RH) Seat belt control ECU

WIRING DIAGRAM

Reter to the DTC B2000 (Click here).

INSPECTION PROCEDURE

NOTICE:

When the seat belt control ECU is replaced with a new one, Active Test must be performed (Click here).

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

Turn the engine switch off.

Disconnect the cable from the negative (-) battery terminal.

Disconnect the V8 belt connector.

Measure the resistance of the wire harness side connector.
Standard resistance:
Tester Connection
Condition
Specified Condition
V8-1 - Body ground
Always
1 MΩ or higher
V8-2 - Body ground
Always
1 MΩ or higher
V8-1 - V8-2
Always
1 MΩ or higher

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

2.INSPECT FRONT SEAT OUTER BELT ASSEMBLY RH

Measure the resistance of the connector.
Standard resistance:
Tester Connection
Condition
Specified Condition
V8-1 - Body ground
Always
1 MΩ or higher
V8-2 - Body ground
Always
1 MΩ or higher

REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH

REPLACE SEAT BELT CONTROL ECU

Tester Connection	Condition	Specified Condition
V8-1 - Body ground	Always	1 MΩ or higher
V8-2 - Body ground	Always	1 MΩ or higher
V8-1 - V8-2	Always	1 MΩ or higher