Dtc B2002 Open In Seat Belt Motor Rh Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FRONT SEAT OUTER BELT ASSEMBLY RH CIRCUIT

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

DTC B2002 Open 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 B2002 is stored, DTCs B2026 and B2027 are not stored.

DTC Code
DTC Detection Condition
Trouble Area
B2002
During the initial check or with the ignition switch ON, the seat belt motor RH circuit has an open (the voltage at terminal MOR+ is 8.5 V or higher and the voltage at terminal MOR- is below 2 V) 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 B2002 Open 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 B2002 Open In Seat Belt Motor Rh Circuit

  1. Disconnect the G117 ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G117-2 (MOR+) - G117-1 (MOR-)
    		Always
    		Below 20 Ω
    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 (SEAT BELT CONTROL ECU - FRONT SEAT OUTER BELT RH)

  1. Disconnect the G117 ECU connector.

  1. Disconnect the Q3 belt connector.

  1. Using a service wire, connect terminals Q3-1 (MOR+) and Q3-2 (MOR-) of the connector of the front seat outer belt RH.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G117-2 (MOR+) - G117-1 (MOR-)
    		Always
    		Below 2 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

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