Mitsubishi Outlander XL. Manual - part 1323

SEAT SLIDE SENSOR

M25201000014USA0000010000

AC506911

ZC601299

Seat slide sensor

Shield plate

0000

｠

The  seat  slide  sensor  is  attached  to  the  slide
adjuster on the driver's seat side, and the seat is
moved forward/backward by seat sliding. When the
seat  is  slid  forward,  the  shield  plate  covers  the
sensor,  and  the  sensor  determines  that  the  seat
slide position is set forward.

｠

The  seat  slide  sensor  outputs  the  current  by
switching high output current and low output current
from the seat slide position as shown in the figure.
Based on the output current, SRS-ECU determines
the deployment stage of the front air bag, and then
energizes the squib.

Shield plate position

Current value

Deployment stage

When the shield plate is in the detection range of the seat
slide sensor

Low output current

Only 1 stage

When the shield plate is not in the detection range of the
seat slide sensor

High output current

1st and 2nd stage

52B-14

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SYSTEM CONSTRUCTION

OCCUPANT CLASSIFICATION-ECU AND WEIGHT SENSOR

M25201000013USA0000010000

ZC601598

Occupant classification-ECU

Weight sensor

Weight sensor

0000

The weight sensors are attached to the seat rails and
provide  SRS-ECU  with  information  on  the  weight
applied to the front passenger seat.

The  occupant  classification-ECU  identifies  the
occupant  class  based  on  the  signals  from  weight
sensors, and sends the signal to SRS-ECU. When the
occupant is determined to be less than 66 lbs (30 kg),
the passenger's (front) air bag is not deployed.

SEAT BELT WITH PRE-TENSIONER

M25201000080USA0000010000

ZC501943

Pipe

Gear

Ball

Spool

Gas generator

0000

Seat belt with pre-tensioner

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-15

SYSTEM CONSTRUCTION

The  seat  belt  incorporating  the  pre-tensioner
automatically winds the seat belt upon front impact to
reduce forward shifting of the passenger.
Upon  front  impact  the  pre-tensioner  ignites  the  gas
generator  and  emits  gas  with  the  SRS-ECU  signal

when the front impact sensor, attached to the front of
the  body,  detects  an  impact  that  exceeds  the
permissible limit. By this gas pressure, a ball moves
in  the  pipe  and  rotates  the  gear.  This  gear  rotation
operates  the  spool  in  the  direction  of  retracting  the
belt, and the webbing is retracted.

LAP BELT PRE-TENSIONER (LH)

M25201000102USA0000010000

ZC501946

Seat belt

Wire

Ball

Tube

Piston movement

Piston

Gas generator

Seat belt tension

0000

The lap belt pre-tensioner automatically pulls in the
seat belt upon a frontal collision to reduce the forward
travel distance of occupants.
Upon  a  collision,  when  the  front  impact  sensor,
attached to the front of the vehicle body, detects an
impact that exceeds the permissible limit, the lap pre-

tensioner  ignites  the  gas  generator  with  the  signal
from SRS-ECU, and the generator emits the gas.
By  the  gas  pressure,  the  wire  linked  to  the  piston
travels in the direction of movement, then the seat belt
is pulled in. Subsequently, when a tension is applied
to the seat belt by the forward travel of an occupant,
balls  are  jammed  between  the  piston  and  tube
because of the wedge action, and the belt position is
maintained.

PASSENGER’S SEAT BELT WARNING LIGHT

M25201000015USA0000010000

ZC601349

Passenger’s seat belt  
warning light

0000

The  passenger's  seat  belt  warning  light  turns  ON  when  the
passenger's seat occupant is determined to be 66 lbs (30 kg) or
more by the occupant classification-ECU and his seat belt is not
fastened.

52B-16

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SYSTEM CONSTRUCTION

PASSENGER’S AIR BAG OFF INDICATOR LIGHT

M25201000016USA0000010000

ZC601349

Passenger’s air bag OFF  
indicator light

0001

The  indicator  normally  comes  on  when  the  ignition  switch  is
turned to the "ON" position and goes off a few seconds later.
In the following situations, the indicator will stay on to show that
the passenger’s (front) air bag is not operational.

｠

The occupant is determined to be less than 66 lbs (30 kg) by
the occupant classification-ECU.

｠

The front passenger’s seat is not occupied.

The indicator goes off when the occupant is determined to be 66
lbs  (30  kg)  or  more  by  the  occupant  classification-ECU,
indicating that the passenger's (front) air bag is operational.

SRS-ECU

M25201000070USA0000010000

The SRS-ECU incorporates a front analog G-sensor
and front safing G-sensor for frontal collisions and a
side-airbag safing G-sensor for side collisions. SRS-
ECU  enters  an  ignite  signal  to  the  driver's  and
passenger's (front) air bag modules if the front impact
sensor in the engine compartment, the front analog G-
sensor  and  front  safing  G-sensor  in  the  SRS-ECU
simultaneously detect gravitational impact upon front
impact. Further, SRS-ECU starts an ignite signal for
the side and curtain air bag module upon sideways
gravitational impact that is simultaneously detected by
the analog G-sensor of the side impact sensor and the
side-airbag safing G-sensor inside the SRS-ECU.

The  SRS-ECU  is  provided  with  the  following
capabilities:

｠

Backup  power  supply  in  case  of  power  failure  in
collisions

｠

Boosting function in case of battery voltage drop

｠

Self-diagnosis function to avoid system’s operation
errors and improve its reliability

DIAGNOSTIC FUNCTION

The  SRS-ECU  has  the  following  functions  to  make
system checking using the scan tool easy.

｠

Diagnostic trouble code output

｠

Service data output

｠

Actuator test

DIAGNOSTIC TROUBLE CODE OUTPUT

The  SRS-ECU  diagnoses  the  following  items  and
stores  a  diagnostic  trouble  code  in  the  non-volatile
memory  (EEPROM*1)  when  a  problem  is  detected.

Therefore, the memory is not deleted after a battery
terminal is disconnected, (The diagnostic trouble code
memory can be deleted by the scan tool.)

Diagnostic  trouble
Code No.

Inspection item

B1206

Passenger's air bag OFF indicator light (open circuit)

B1207

Passenger's air bag OFF indicator light (short circuit between circuit terminal)

B1B00

Driver's air bag module (1st squib) system (shorted to squib circuit ground)

B1B01

Driver's air bag module (1st squib) system (shorted to squib circuit power supply)

B1B02

Driver's air bag module (1st squib) system (squib circuit open)

B1B03

Driver's  air  bag  module  (1st  squib)  system  (short  circuit  between  squib  circuit
terminals)

B1B04

Driver's air bag module (2nd squib) system (shorted to squib circuit ground)

B1B05

Driver's air bag module (2nd squib) system (shorted to squib circuit power supply)

B1B06

Driver's air bag module (2nd squib) system (squib circuit open)

B1B07

Driver's  air  bag  module  (2nd  squib)  system  (short  circuit  between  squib  circuit
terminals)

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-17

SYSTEM CONSTRUCTION