turn signal MITSUBISHI COLT 2006 Service Owner's Guide

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-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

DESCRIPTION OF CONSTRUCTION AND OPERATION
ACTIVE STABILITY CONTROL SYSTEM (ASC)35C-17
DESCRIPTION OF CONSTRUCTION AND OPERATION
M2357000600037
Stability control operation
•ASC-ECU receives various kinds of information
from the wheel speed sensor, steering wheel
sensor, G and yaw rate sensor, pressure sensor,
stop lamp switch, brake fluid level switch, parking
brake switch, and engine ECU. When ECU deter
-
mines the vehicle runs in the oversteer or unders-
teer direction based on the signal sent from these
sensors, ASC-ECU drives each valve and pump
motor and controls the braking force to be applied
to the wheels.
•When the system increases the fluid pressure
automatically, it closes the cut valve to shut off
the pressure line to the suction valve, and drives
the pump motor. For example, when the vehicle
runs in the oversteer direction while turning to the
right, ASC-ECU supplies the brake fluid from the
pump to the front left wheel in order to apply the
braking force on it.
•ASC-ECU and the engine ECU communicate
with each other via CAN communication. When
the accelerator pedal is depressed too far, the
signal requesting the engine output reduction is
sent to the engine ECU so that the ASC controlla
-
bility can be secured.