Dtc B2000 Short To B+ In Seat Belt Motor Rh Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FRONT SEAT OUTER BELT ASSEMBLY RH CIRCUIT

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

DTC B2000 Short to B+ 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 B2000 is stored, DTCs B2016, B2026, B2027 and B2035 are not stored.

DTC Code
DTC Detection Condition
Trouble Area
B2000
During the initial check or with the ignition switch ON, the seat belt motor RH circuit has a power supply short (the voltage at terminals MOR+ and MOR- is 8.5 V or higher) for 1 second or more.
  1. Front seat outer belt assembly RH
  2. Harness or connector
  3. Seat belt control ECU

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Pre-Crash Safety.Pre-Crash Safety System. Dtc B2000 Short To B+ In Seat Belt Motor Rh Circuit


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.
1.CHECK FRONT SEAT OUTER BELT ASSEMBLY RH CIRCUIT


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Pre-Crash Safety.Pre-Crash Safety System. Dtc B2000 Short To B+ In Seat Belt Motor Rh Circuit

  1. Disconnect the G117 ECU connector.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    G117-2 (MOR+) - Body ground
    		Ignition switch ON
    		Below 1 V
    G117-1 (MOR-) - Body ground
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Seat Belt Control ECU)


NG
Go to step 2
OK

REPLACE SEAT BELT CONTROL ECU (LandCruiser RM000003UX700KX.html)

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


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Pre-Crash Safety.Pre-Crash Safety System. Dtc B2000 Short To B+ In Seat Belt Motor Rh Circuit

  1. Disconnect the Q3 belt connector.

  1. Disconnect the G117 ECU connector.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    Q3-1 (MOR+) - Body ground
    		Ignition switch ON
    		Below 1 V
    Q3-2 (MOR-) - Body ground
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Front Seat Outer Belt Assembly RH)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH (LandCruiser RM000002LJS052X.html)