B2000

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 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 deploy the pretensioner.

DTC No.	DTC Detection Condition	Trouble Area
B2000	Short to B+ in the seat belt motor RH circuit continues for 1 second or more Short in the 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

INSPECTION PROCEDURE

NOTICE:

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

1. INSPECT FRONT SEAT OUTER BELT ASSEMBLY RH

1. Disconnect the P8 connector of the front seat outer belt assembly RH.

2. Measure the voltage according to the value(s) in the table below.

Standard voltage:

Tester Connection	Condition	Specified Condition
P8-1 - Body ground	Engine switch on (IG)	Below 1 V
P8-2 - Body ground	Engine switch on (IG)	Below 1 V

NG	REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH

OK

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

1. Disconnect the negative (-) battery terminal .

2. Disconnect the O38 connector of the seat belt control ECU.

3. Connect the negative (-) terminal to the battery.

4. Measure the voltage according to the value(s) in the table below.

   Standard voltage :

   Tester Connection	Condition	Specified Condition
   P8-1 - Body ground	Engine switch on (IG)	Below 1 V
   P8-2 - Body ground	Engine switch on (IG)	Below 1 V

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
REPLACE SEAT BELT CONTROL ECU