Mitsubishi MOTORS Space Runner 1998, Workshop Manual

Page: 27 / 1164

GENERAL -
Supplemental Restraint System (SRS)
and Seat Belt with Pre-tensioner
00-25
SEAT BELT WITH PRE-TENSIONER
The seat belts with pre-tensioners are installed on
both center pillars.
The pre-tensioner, which is controlled by the SRS-
ECU, works simultaneously with the SRS air bag
in a head-on collision. When triggered, the SRS-
ECU sends a squib igniting signal to the gas genera-
tor. Generated gas moves the rotor to take up seat
belt slack. This prevents a passenger from moving
forwards excessively. After this, the ELR works to
inhibit the seat belt.
Caution
Never disassemble or give an impact to the
seat belt with pre-tensioner.
Seat belt
Gas generator
Rotor
SRS-ECU
SRS SERVICE PRECAUTIONS
00100600073
1. In order to avoid injury to yourself or others
from accidental deployment of the air bag and
accidental operation of the seat belt with
pre-tensioner during servicing, read and
carefully follow all the precautions and
procedures described in this manual.
2. Do not use any electrical test equipment on
or near SRS components, except those
specified on GROUP 52B.
3. Never Attempt to Repair the Following
Components:
D SRS air bag control unit (SRS-ECU)
D Clock Spring
D Air bag module (Driver’s side or front
passenger’s side)
D Side air bag module
D Side impact sensor
D Seat belt with Pre-tensioner
NOTE
If any of these components are diagnosed as
faulty, they should only be replaced, in
accordance with the INDIVIDUAL COM-
PONENTS SERVICE procedures in this
manual, starting at page GROUP 52B.