sensor MITSUBISHI COLT 2006 Service Manual PDF

GENERAL INFORMATION
POWER STEERING37-3
CONSTRUCTION DIAGRAM
AC405883AB
Steering wheel
Steering column assembly
Selector lever assembly
Electric power
steering-ECU
Motor
Torque sensor
Tie-rod end Steering gearDash panel cover

AC405884AB
Steering wheel
Steering column assembly
Electric power
steering-ECU
Motor
Torque sensor
Tie-rod end
Yoke bearing
Steering gearDash panel cover

GENER
A L IN FORMA T ION
POWER ST E E RING37-4

ELECTRICAL POWER STEERING
POWER STEERING37-7
ELECTRICAL POWER STEERING
GENERAL INFORMATIONM2370000100862
Vehicle-speed sensitive electric power steering
(whole range type) has been adopted. This system
allows a light steering force during stationary steer
-
ing manoeuvre or low speed driving, and a moderate
steering force during medium or high speed driving.
For vehicles with this system, the electric power
steering-ECU controls the motor current according to
the vehicle speed and steering force of the steering
wheel.
CAN* communication has been adopted in order to
communicate with another ECUs for obtaining nec
-
essary information related to this control, achieving
wiring harness saving and secure data communica
-
tion.
NOTE: *: For more information about CAN (Control-
ler Area Network), refer to GROUP 54C, General
Information
P.54C-2.
SPECIFICATIONS
ItemSpecification
MotorTy p ePermanent magnetic field type
Rated voltage (V)DC12
Rated current (A)50
Torque sensorTy p eNoncontact type (Inductance detection type)
Electric power
steering-ECUControl typeMicrocomputer control (16 bit)
Rated voltage (V)DC12
SYSTEM CONFIGURATION
AC601667AB
Electric power
steering-ECU
Ignition switch
Power supply to electric
power steering-ECU
Vehicle speed sensor
Motor Motor current value Engine speed
Torque sensor signal (main) Electric power
steering warning lamp
Diagnosis connector
Motor current
Torque sensor
Torque sensor signal (sub) Engine-CVT-ECU or
engine-ECU
NO
TE: Dash ed lines indicat e CAN-bu s lines.

ELECTRICAL POWER STEERING
POWER STEERING37-8
ELECTRICAL PARTS AND FUNCTIONS
Parts nameDescription about function
SensorVehicle speed sensor (ABS-ECU)Sends the vehicle speed signal to the electric power
steering-ECU.
Torque sensorDetects a steering force, converts it into the voltage signal,
and then sends the signal to the electric power
steering-ECU.
ActuatorMotorGenerates assist torque by the steering operation to the
steering gear using the signals sent from the electric power
steering-ECU.
Electric power steering warning
lampWarns a driver of the system malfunction using the signal
sent from the electric power steering-ECU.
Electric power steering-ECUControl the actuator (motor) based on the signal sent from
sensor.
Controls the self-diagnostic fu nction and fail-safe function.
Controls diagnostic function (Compatible with M.U.T.-III).
GENERAL DESCRIPTION ON SYSTEM
AC207803
AC206444
AC206443
AB
Electric power
steering-ECU
Glove box
Torque sensor
Motor
T o improve opera t iona l reliabi lity , th e dual-circuit sys-
tem ha s be en ad opted f o r the t o rque sensor . If a n y
malfunct
i on occurs in the electric power st eering sys
-
tem, the fail-sa f e fun c tio n of th e ele c tric power steer-
ing-ECU is activated, and the ou tput current of the
electric power steerin
g-ECU a pplied to the motor is
turned o
f f. At th e sa me time, the steerin g syste m enters man ual mode, and informs a dr iver of the sys
-
tem malfu
n ction by illuminating th e warnin g lamp on
the
comb in at io n me te r . Th e warn in g la mp il lu min a te s
wh
en the following malfu n ct ions occur: ope n circuit
in the
e l ectric power stee ring system wiring harness,
poor connectio
n , ma lfunction s in the e l ectric power
steering-ECU, mo
tor , or sensors.

ELECTRICAL POWER STEERING
POWER STEERING37-9
STEERING GEAR
M2370003000239
AC208175
AC208174AC206443AC
NeutralSub
Torque sensor
Steered to leftMain
Steered to right
Output voltage (V)
Torque sensor characteristic chart
52.5
The torqu e sensor which detect s a opera t ed force of
the steerin
g wheel is inst alled in the stee ring g ear .
Whe
n th e st eer in g whe e l is tu rn ed , t h e ste e ring f o rce
is d
e tected by the to rque sensor . At the same time,
2-way supp
ly volt a ge signa l (main and sub ) are input
to the e
l ectric power steerin g-ECU.
MOT O RM237000 1 1 0003 6
AC208523
AC206443
AC207634
AB
View AMotor
Motor
View A
The mot
o r is inst alled in th e steering gea r . The ste e r-
ing motor is applied with a con t rol current sent from
the electric po
we r stee ring-ECU and genera t es t he
assist
torque to the steering ge ar according to the
steering op
eratio n.

ELECTRICAL POWER STEERING
POWER STEERING37-11
OPERATION
M2370000700110
IGNITION SWITCH ON
Ignition supply voltage is applied to the electric
power steering-ECU, and the ECU enters standby
mode.
IGNITION SWITCH ON
AC601668AC207635 AB
Electric power
steering-ECU
OFF
OFF MotorMotor current signal
Maximum limit value (50A)
Engine speed
Engine speed
ON
500 r/min or 15 km/h
max 0.5s 0.7s
Motor output Determination of motor
control start Temporary increase of motor
assist limit value
Engine-CVT-ECU or
engine-ECU
1.
Whe n th e e ngine is st arted, the en gine sp eed sig-
nal sent from the en gine -CVT -ECU or
eng
ine-ECU is inp u t to th e ele c tric power steer
-
ing-ECU.
2. Af ter st a r ting the engine, the electric power ste e r-
ing-ECU judges the engin e st atu s "ENGINE
SPEED ON"
when the engine speed reaches 500
r/min or
the vehicle speed reaches 1 5 km/h or
more, the
n the p o wer assist functio n is ready .
STEERING WHEEL OPERAT ION
AC400096
AC206443AB
Electric power
steering-ECU
Torque
sensor
Torque sensor
Motor Motor
Motor current
Torque sensor signal (main)
Torque sensor signal (sub)
F A IL- S AFE FUNCTION OPERA T ION
Duri ng t h e f a il -s af e m o d e , t h e el ect r ic powe r st ee rin g
operate
s as a manual ste e ring system.

MULTI-DISTRIBUTION INPUT/OUTPUT BY CIRCUIT
SMART WIRING SYSTEM (SWS)54B-4
MULTI-DISTRIBUTION INPUT/OUTPUT BY CIRCUIT
M2541002000649
Multi-distribution is employed by the following cir-
cuits. The relation of the input switches, sensors,
ECUs connected by multi-distribution lines, and out
-
puts are also shown below.
Buzzer
•Lamp reminder buzzer function
•Door-ajar warning buzzer function
•
AC601725AB
• Ignition switch (IG1)
• Driver's door switch
• Hazard lamp switch
Combination meter
• Vehicle speed signal 
• Ignition switch (IG1) ETACS-ECU
Circuit and Input Switch
ECUs and Switches
Connected by
Multi-DistributionOutput
Buzzer (built-in ETACS-ECU)
: CAN communication line : SWS communication line
Column switch
(Lighting or turn
signal lamp
switch)
T u rn-sign a l op eratio n so und fun c tion
Keyless e n try
•Multi-mode keyless en try system
•Keyless entry hazard a n swerba ck function
•
AC401127AB
• Respective door switches
• Key reminder switch
• Keyless entry transmitter ETACS-ECU
•
Electric retractable remote
controlled mirror
• Respective turn signal lamps
• Room lamp
Circuit and Input Switch
ECUs and Switches
Connected by
Multi-DistributionOutput
Keyless ent
ry roo m la mp a n swerba ck funct i on

GROUP 52B
SUPPLEMENTAL RESTRAINT
SYSTEM (SRS)
CONTENTS
GENERAL INFORMATIO N . . . . . . . .52B-2
SYSTEM OPERATION. . . . . . . . . . . .52B-8
FRONT AIR BAG AND SEAT BELT WITH
PRE-TENSIONER. . . . . . . . . . . . . . . . . . . . 52B-8
SIDE AND CURTAIN AIR BAGS . . . . . . . . 52B-9
SYSTEM CONSTRUCTION . . . . . . . .52B-10
DRIVER'S SIDE AIR BAG MODULE . . . . . 52B-10
PASSENGER'S (FRONT) AIR BAG
MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . . 52B-10
SIDE-AIRBAG MODULE . . . . . . . . . . . . . . . 52B-10
CURTAIN AIR BAG MODULE . . . . . . . . . . . 52B-11
FRONT IMPACT SENSOR . . . . . . . . . . . . . 52B-12
SIDE IMPACT SENSOR . . . . . . . . . . . . . . . 52B-12
SEAT BELT WITH PRE-TENSIONER. . . . . 52B-13
SRS-ECU . . . . . . . . . . . . . . . . . . . . . . . . . . 52B-13
SRS AIR BAG SPECIAL CONNECTOR . . . 52B-17

GENERAL INFORMATION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)52B-3
CONSTRUCTION DIAGRAM
AC601639
AC207323
AC207321AC207230
AC601468
Driver's air bag
modulePassenger's (front)
air bag module
SRS-ECU
Diagnosis connector
Clock springSRS warning lamp
Seat belt with
pre-tensioner
Curtain air bag module
Front impact sensor
SRS-ECUSide impact sensor
Side-airbag module
AB
SRS warning lamp
SRS warning lamp

GENERAL INFORMATION
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)52B-4
SRS SYSTEM CIRCUIT DIAGRAM
AC401544
Ignition switch (IG1)
Combination
meter (SRS
warning lamp)
No.40
7.5A
Driver's
air bag
module ON
OFF OFF
ON ON
OFF
ON
OFF
ON
ON
OFF
Passenger's
(front)
air bag
moduleClock spring
ON
OFF
OFF ON
OFF ON
OFF
ON
OFF
ON
ON
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Connector
lock switch*
Connector
lock switch* Connector
lock switch*Connector
lock switch*
Seat belt
pre-tensioner
(LH)
Seat belt
pre-tensioner
(RH)
Side-airbag
module
(LH)
Side-airbag
module
(RH)
Curtain air bag
module
(LH)
Curtain air bag
module
(RH) ON
OFF
OFF ON
ON
OFF
ON
ON
OFF
OFFONON
OFF
OFFON
OFF
ON
Connector
lock switch*
Connector
lock switch* Connector
lock switch*
OFFON
OFF
Connector
lock switch*Side impact
sensor (RH)
Side impact
sensor (LH)
Diagnosis
connector
Front impact
sensor (RH)
Front impact
sensor (LH)
Note
*: Connector
connected: ON Connector
disconnected: OFF
AB
SRS-ECU
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
OFF OFF
No.37
7.5A