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