2006 MITSUBISHI COLT igni

SYSTEM OPERATION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)52B-8
SYSTEM OPERATION
FRONT AIR BAG AND SEAT BELT WITH
PRE-TENSIONER
M2521000700059
AC313906
Frontal collision against
another vehicleor
Frontal collision against a
solid surface Analogue G-sensor
Ignition judgment
Shock
above a
certain
level
Ignition signal
SRS-ECU
Front air bag safing
G-sensor
Front impact
sensor (RH)
Front impact
sensor (LH)
AB
In case of a
front a l collision, if the front imp a ct sensor
in the
engine comp artment, th e ana logue G-sensor
in the
SRS-ECU and t he fron t air b ag sa fing sensor
simult
ane ously de tect an imp a ct th at excee d a cer
-
ta in threshold (turn ON), the SRS-ECU sen d s an
ignition
sign al to the air bag modu les (squ ibs) and
seat
belt p r e-tension e rs (squib s ) on the driver and
p
a sse nger sid e s, thus inflating the air bags an d op er
-
ating the seat be lt pre - tensioners.

SYSTEM OPERATION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)52B-9
SIDE AND CURTAIN AIR BAGS
M2521000800045
AC208121
AC206839
AC207324
Side collision against another vehicleIgnition judgment
SRS-ECU
Shock
above a
certain
level
Ignition signalCurtain air bag modules
Side-airbag modules
Side impact
sensor (RH)
Side impact
sensor (LH)
AC
Ignition signal
Side-airbag safing
G-sensor
In
case of a side co llisio n , if a n imp a ct tha t ba sed on
criteria
is simult ane ously det ect ed b y th e side imp a ct
sensors
inst alled in a centre pillar an d respectively
and by the side
-airba g sa fing G-se nsor (the senso r s
turn ON),
the SRS-ECU sends an ignition signa l to
the side-airbag modu
le an d curt ain air bag module
on the
relevant side to inf l ate them.

SYSTEM CONSTRUCTION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)52B-11
CURTAIN AIR BAG MODULE
M2521000500088
AC401546
AC207337AC207332
AC207338
Split hole
Burst disk 2Squib
Propellant
Burst disk 1
Curtain air bag moduleInflator
AB
High-pressure gas
The curt ain air b ag module co nsist s o f an a i r ba g, an
infla
t or , an d the f i xing ge ar rela ting to those p a rt s,
and is in
st alled in the roo f side sections (from t he
driver's an
d the p a sse nger's front p illars to the re ar
pill
ars).
The air bag is made f r om nylon with th e inside
coate
d with silico n, and housed in the roo f side sec
-
tions, folded up comp actly .
The inflato r is of a hybrid type filled wit h hig h -pres-
sure ga s (majo r compone nt: argo n). Whe n curr ent
p
a ss es t h ro ug h t h e sq ui b t o ig ni te th e ig n i t e r po wde r ,
burst
disk 1 b u rst s . T hen, th e co mbustion of the
i
gni ter powder increases the pres sure of the filler gas
to burst disk 2
, lett ing th e gas out o f the split hole.
CURTAIN AIR BAG DEPLOYMENT
IGNITION
AC304629
if an imp a ct in a side collision is de tecte d b y the rear
side
imp a ct senso r inst a lled inside a inn e r quart e r
p
a n e l an d by the side-a i rbag safing G-sen s or inte
-
grated in the SRS-ECU, the SRS-ECU se nds a n igni-
tion signal to th e squib o f th e re levant curt ain a i r bag
mo
du le. Wh en t h is ig nition sign al p a sses t h r o u g h t h e
squib, the
inflator ge nerates gas.
INFLATING
AC304630
The air bag st art s to a ppear p u shing away a he adlin-
ing.
COMPLETION OF INFLATION
AC304631
The air bag fu lly in flates to p r otect the he ads of the
occup
ant s in the fro n t and rear seat s.

SYSTEM CONSTRUCTION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)52B-12
FRONT IMPACT SENSOR
M2521005000174
AC208124
AC207331
AC207321
Front impact sensor
Front impact sensor
AC
Sensor internal circuit
Front impa ct sensor is in st alled out side o f the h ead-
lamp support p ane l in the en gine comp a r tmen t.
When th
e front imp a ct se nsor detect s an imp a ct dur
-
ing collision, the co nt a c t in the sensor turn s ON a nd
send
s out put signal to th e SRS-ECU. For d i agn osis,
the resist
an ce of the fro n t imp a ct sensor is con
-
nected in p a r a lle l with the cont act p o int.
SIDE IMPACT SENSOR
M25210060 0014 4
AC312729
AC207222
AC311719
Side impact
sensor
Side impact
sensor
Front door trim
AB
The side imp
a ct sensor is inst alled in the lower p a rt s
of th
e centre pillars an d cont ains a n an alog ue G-se n
-
sor.
The side imp a ct se nsor tran smit s cod ed acce le ration
dat
a to th e SRS-ECU. Base d on t he dat a, t he
SRS-ECU then d
e termines if th e side an d/or curt a i n
air
bags should be inflate d , a nd send s a n ignit i on sig
-
nal. The side imp a ct sen s or a l so diag nose s it s own
componen
t s , and send s a d i agno sis co de to t he
SRS-ECU if a p
r oble m occurs.

SYSTEM CONSTRUCTION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)52B-15
32SRS-ECU capacitor circuit voltage too low
34*2SRS-ECU connector lock out of order
35Ignition of the air bag completed
39Simultaneous deployed
41*2Power supply voltage (IG1 (A) voltage) drops abnormally.
42*2Power supply voltage (IG1 (B) voltage) drops abnormally.
43*2SRS warning lamp circuit open-circuited
44*2SRS warning lamp circuit malfunction
45SRS-ECU non-volatile memory (EEPROM) and A/D converter system
51Driver's air bag squib activating circuit short-circuited
52Driver's air bag squib activating circuit open-circuited
54Passenger's (front) air bag squib activating circuit short-circuited
55Passenger's (front) air bag squib activating circuit open-circuited
56Driver’s seat belt pre-tensioner (squib ignition drive circuit) system detected short
57Driver’s seat belt pre-tensioner (squib ignition drive circuit) system detected open
58Passenger’s seat belt pre-tensioner (squib ignition drive circuit) system detected short
59Passenger’s seat belt pre-tensioner (squib ignition drive circuit) system detected open
61Driver's air bag squib drive circuit (power supply side) short-circuited
62Driver's air bag squib drive circuit (earth side) short-circuited
64Passenger's (front) air bag squib drive circuit (power supply side) short-circuited
65Passenger's (front) air bag squib drive circuit (earth side) short-circuited
66Driver's pre-tensioner squib (power supply side) short-circuited
67Driver's pre-tensioner squib (earth side) short-circuited
68Passenger's (front) pre-tensioner squib drive circuit (power supply side) short-circuited
69Passenger's (front) pre-tensioner squib drive circuit (earth side) short-circuited
71*3Side-airbag squib (RH) short-circuited
72*3Side-airbag squib (RH) open-circuited
73Side-airbag squib (RH) drive circuit shorted
74Side-airbag squib (RH) drive circuit open
75Side-airbag squib (RH) drive circuit (power supply side) shorted
76Side-airbag squib (RH) drive circuit (earth side) shorted
79Side impact sensor (LH) communication error
81*3Side-airbag squib (LH) shot-circuited
82*3Side-airbag squib (LH) open-circuited
83Side-airbag squib (LH) drive circuit shorted
84Side-airbag squib (LH) drive circuit open
85Side-airbag squib (LH) drive circuit (power supply side) shorted
86Side-airbag squib (LH) drive circuit (earth side) shorted
89Side impact sensor (RH) communication error
CODE NO. MAJOR CONTENTS OF DIAGNOSTICS

SYSTEM CONSTRUCTION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)52B-16
NOTE: .
•*1: Electrically Erasable Programmable ROM
•*2: This diagnosis code memory will be automatically cleared from the memory and the SRS warning
lamp will be switched off when the system returns to normal condition.
•*3: The diagnosis codes will remain in memory and the SRS warning lamp will be switched off if the sys-
tem returns to normal condition.
SERVICE DATA OUTPUT
When the SRS-ECU detects a problem, it stores a
diagnosis code and the duration that the problem has
lasted in the non-volatile memory. In addition, how
often a diagnosis code and duration are cleared by
the M.U.T.-III are stored in the non-volatile memory
as a reference for service work. This data can be
read by the M.U.T.-III.
No.Service Data ItemApplicability
92Number indicating how often the memory is clearedMaximum time to be stored: 250
times
93How long a problem has lasted (How long takes from the
occurrence of the problem until the first air bag squid Igniting
signal)Maximum time to be stored: 9999
minutes (approximately 7days)
94How long a problem has lasted (How long from the first air bag
squib igniting signal until now)
91*2Side impact sensor (LH) voltage error
92G-sensor of side impact sensor (LH) failure
93Side impact sensor (LH) communication impossible
94*2Side impact sensor (RH) voltage error
95G-sensor of side impact sensor (RH) failure
96Side impact sensor (RH) communication impossible
CODE NO. MAJOR CONTENTS OF DIAGNOSTICS

CONSTRUCTION DIAGRAM
ACTIVE STABILITY CONTROL SYSTEM (ASC)35C-6
ACTUATOR
M2357000400033
HYDRAULIC UNIT
The hydraulic unit incorporates the ABS control and
ASC control. The cut valve, pressure relief valve,
suction valve, suction damper, and pressure sensor
have been added to the unit for the ASC control.
NOTE: For the internal hydraulic circuit of the
hydraulic unit, refer to
P.35C-17.
ASC INDICATOR LAMP, ASC OFF
INDICATOR LAMP
The ASC system illuminates or flashes the ASC indi-
cator lamp or ASC OFF indicator lamp in the follow-
ing operation patterns, and informs the driver of the
ASC system status.
ASC indicator lamp
•Flashes in 3 Hz interval during the stability con-
trol.
•Flashes in 3 Hz interval during the TCL control.
•Turns ON when the system malfunction occurs.
ASC OFF indicator lamp
•Illuminates when the ASC system is not acti-
vated.
ASC indicator lamp, ASC OFF indicator lamp illumination and flashing patterns
StateASC indicator lampASC OFF indicator lamp
NormalValve checkIlluminates for approx. 3
seconds after the ignition
switch is turned ON.Illuminates for approx. 3
seconds after the ignition
switch is turned ON.
Normal−−
When the stability control is enabledFlashing (3 Hz)−
TCL operatedFlashing (3 Hz)−
When the ASC control is turned
OFF by the ASC OFF switch−Illuminates
Abnorma
lStability control malfunctionIlluminatesIlluminates
TCL malfunctionIlluminatesIlluminates
M.U.T.-III
connecti
on−IlluminatesIlluminates

TRANSMISSION CONTROL
CONTINUOUSLY VARIABLE TRANSMISSION (CVT)23-8
CVT ERRONEOUS OPERATION PREVENTION MECHANISMS
M2232003000104
SHIFT LOCK MECHANISM
Only when the following two conditions are satisfied,
the selector lever can be shifted from the P position
to another position:•When the brake pedal is depressed
•When the ignition key is in other than the LOCK
(OFF) position
When the brake pedal is not depressed
AC206902
AB
Brake pedal
Shiftlock cable
Stopper
Lever
Rod
Lock cam
Detent pin
When the se lect or lever is in the P po sit i on wit h the
brake
pedal not d epressed, the shif tlock cable sto p
-
per keep s the lever lo cke d so that th e rod a nd lo ck
cam do no
t move.
As a result of this, th e pushbutto n of th e select or
lever linked
to the detent pin canno t be p r essed and
the selector le
ver canno t be shif ted f r om th e P posi
-
tion to anot her position.
When the brake pe dal is depressed
AC206903
AB
Brake pedal
Shiftlock cable
Stopper
Lever
RodLock cam
Detent pin
When th
e brake ped al is dep ressed, th e sto pper is
pulled by the shif
tlo c k cable so that t he le ver
beco
m es unlo c ked.
Then the lock cam linked to the ro d can also rot a te
so th
at the sele ctor leve r can be shif ted fro m th e P
position
to ano ther po sition by pressing the push but
-
ton.
NOTE: Whe n the b r ake pedal is depressed with th e
ignition key in th e LOCK (OFF) po sition, th e select or
le
ve
r ca nn ot b e sh if te d fro m th e P p o sition t o an oth e r
position .