DTC    B2005    Short to B+ in Seat Belt Motor LH Circuit

for Preparation Click here


DESCRIPTION

The seat belt control ECU receives information from the driving support ECU using CAN communication and tightens the seat belt by operating the motor in the front seat outer belt assembly LH.

DTC No.
DTC Detection Condition
Trouble Area
B2005
Short to B+ in the seat belt motor LH circuit continues for 1 second or more.
  1. Front seat outer belt assembly LH
  2. Wire harness or connector (seat belt control ECU - front seat outer belt assembly LH)
  3. Seat belt control ECU

WIRING DIAGRAM


E183039E24


INSPECTION PROCEDURE

CAUTION:
The pretensioner is built into the front seat outer belt assembly LH. 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.

NOTICE:
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work (Click here).

1.INSPECT FRONT SEAT OUTER BELT ASSEMBLY LH


    B139235E43

  1. Remove the front seat outer belt assembly LH connector (Click here).

  1. Turn the power switch on (IG).

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    P11-1 - Body ground
    		Power switch on (IG)
    		Below 1 V
    P11-2 - Body ground
    		Power switch on (IG)
    		Below 1 V

  1. Reconnect the front seat outer belt assembly LH connector.



NG
REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH (Click here)
OK


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

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

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

  1. Disconnect the front seat outer belt assembly LH connector.

  1. Disconnect the seat belt control ECU connector.

  1. Connect the cable to the negative (-) auxiliary battery terminal.

  1. Turn the power switch on (IG).

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    P11-1 - Body ground
    		Power switch on (IG)
    		Below 1 V
    P11-2 - Body ground
    		Power switch on (IG)
    		Below 1 V

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

  1. Reconnect the seat belt control ECU and front seat outer belt assembly LH connectors.

  1. Connect the cable to the negative (-) auxiliary battery terminal.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (FRONT SEAT OUTER BELT ASSEMBLY LH - SEAT BELT CONTROL ECU)
OK

REPLACE SEAT BELT CONTROL ECU (Click here)