B2456

Description

- When control unit activates pre-crash seat belt system, it retracts the shoulder belt with the electric motor and reduces the seat belt slack.
- Power supply is supplied constantly from battery power supply.


DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. SELF-DIAGNOSIS WITH PRE-CRASH SEAT BELT CONTROL UNIT

1.Turn ignition switch ON.
2.Check "Self-diagnostic result" with CONSULT.
Is DTC detected?
YES- .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK FUSE AND FUSIBLE LINK

Check that the following fuse and fusible link are not blown.





Is the inspection result normal?
YES- GO TO 2.
NO- Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is blown.

2. CHECK PRE-CRASH SEAT BELT MOTOR POWER SUPPLY

1.Turn ignition switch OFF.
2.Disconnect pre-crash seat belt control unit (passenger side) connector.
3.Check voltage between pre-crash seat belt control unit (passenger side) harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace harness between pre-crash seat belt control unit (passenger side) and fusible link.

3. CHECK SELF DIAGNOSTIC RESULT

1.Connect pre-crash seat belt control unit (passenger side) connector.
2.Turn ignition switch ON.
3.Check "Self-diagnostic result" with CONSULT.
4.Touch "ERASE".
5.Perform DTC Confirmation Procedure.
See .
Is DTC B2456 displayed again?
YES- Replace pre-crash seat belt control unit (passenger side).
NO- GO TO 4.

4. CHECK INTERMITTENT INCIDENT

Intermittent Incident.
- INSPECTION END