B2454

B2454 MOTOR PWR SUP CIRC





Description
- When control unit activates pre-crush seat belt system, it retracts the shoulder belt with the electric motor and reduces 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-III.
Is DTC detected?
YES - B2454.
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 connector.
3. Check voltage between pre-crash seat belt control unit harness connector and ground.





Is the inspection result normal?
YES - Replace pre-crash seat belt control unit. Removal and Installation.
NO - Repair or replace harness between pre-crash seat belt control unit and fusible link.