General Information

Pre-safe Seat Belt-Left
C1420 Overvoltage Detected - General Information

Component Location





General Description

PSB (Pre-Safe Seat Belt) : It is the protection moduel for passenger and operates the seat belt automatically to warn the danger to driver and passenger for roadholding at each vehicle status.
At buckled seat belt, PSB is received the vehicle status from each sensors(Radar, wheel speed, SAS) when danger situation is happen during Driving and PSB decide that drining status is in critical situations then control the seat belt to reduce a injury of passanger and applied comfortable driving.
It's istalled at driver seat and passenger seat of under B-Pillar each.
PSB Composit with Driving detected sensor(Radar, Wheel Speed, SAS), Pre-safe seat belt(ECU, Motor) and Standard Seat belt(FLR+P/T+L/L).
PSB has self dignosis and operated Pre-safe belt by CAN communication each modules, also has Vehicle analysis information and supported effectiveness of passive safety systems in advance (reduction of too much slack, improved position of occupant to airbag) by monitoring the vehicle status.






DTC Description

This DTC is set when Input voltage is above 16.5V and 1sec to PSB

DTC Detecting Condition





Diagnostic Circuit Diagram





Signal Waveform & Data




Fig.1) PSB-LH actuation test successful states at Driver seat belt buckled after(KEY ON)