cooling MITSUBISHI COLT 2006 Service User Guide

CONTROLLER AREA NETWORK (CAN)
MULTIPOINT FUEL INJECTION (MPI) <4A9>13A-13
CONTROLLER AREA NETWORK (CAN)
M2132019000292
Establishing communication without fail is designed
by CAN communication protocol. Refer to Group
54C-CAN
P.54C-2 for the details about CAN.
The signals input into engine-ECU or
engine-CVT-ECU are as follows:
CAN Communication Input Signal Table
Input signal nameTransmitter ECU
Motor electric current signalEPS-ECU
Compressor signalMeter and A/C-ECU
Idle-up request signal
Cooling fan request signal
SYSTEM CONFIGURATION DIAGRAM
AK600527AB
Engine-ECU
or
Engine-CVT
-ECU
M.U.T.-III
EPS-ECU ETACS
-ECU
Steering
wheel
sensor G and
yaw rate
sensor
ABS-ECU
CAN_H
CAN_L Diagnosis
connector Combination
meter
(incorporating
meter-A/C-ECU)
: Shows sub bus line. : Shows main bus line. Terminal resistor
Terminal resistor
Main bus lines

DIAGNOSIS SYSTEM
MULTIPOINT FUEL INJECTION (MPI) <4A9>13A-20
ACTUATOR TEST FUNCTION
The actuator test items are given in the table below
Item No.Inspection itemDrive contents
01InjectorsCut fuel to No.1 injector
02Cut fuel to No.2 injector
03Cut fuel to No.3 injector
04Cut fuel to No.4 injector
07Fuel pumpFuel pump operates
08Purge control solenoid valveSolenoid valve turns from OFF to ON
17Basic ignition timingSet to ignition adjustment mode
20Cooling fan control relayDrive the fan motor
34Throttle valve control servoStop the throttle valve control servo

GENERAL INFORMATION
MULTIPOINT FUEL INJECTION (MPI) <4G1>13B-3
SYSTEM BLOCK DIAGRAM
AK600528
Barometric pressure sensorEngine control unitEngine-ECU
[1] Fuel injection control
[2] Throttle valve opening control
and idle speed control
[3] MIVEC (Mitsubishi Innovative
Valve timing Electronic
control system)
[4] Ignition timing control
[5] Engine control relay control
[6] Throttle valve control servo
relay control
[7] Fuel pump relay control
[8] Oxygen sensor (front) heater
control
[9] Oxygen sensor (rear) heater
control
[10] Fuel pressure control
[11] Waste gate control
[12] Fan relay control
[13] A/C compressor relay
control
[14] Alternator control
[15] Purge control
[16] Diagnostic output
[17] RAM data transmission Throttle valve control unit
Throttle opening feedback control
Engine coolant
temperature sensor Intake air temperature sensor Air flow sensor
Accelerator pedal
position sensor (main) Throttle position sensor (sub)
Camshaft position sensor
Crank angle sensor
Oxygen sensor (front)
Oxygen sensor (rear)
Alternator FR terminal
Clutch switch
Detonation sensor
Ignition switch-IG
Ignition switch-ST
Stop lamp switch
Power supply
Throttle position sensor (main)
Accelerator pedel
position sensor (sub)
Throttle valve control servo No.1 injector
No.2 injector
No.3 injector
No.4 injector
No.1 Ignition coil
No.2 Ignition coil
No.3 Ignition coil
No.4 Ignition coil
Engine control relay
Throttle valve control servo relay
Waste gate solenoid valve
A/C compressor relay
Fuel pump relay
Alternator G terminal
Cooling fan control relay (Hi, Lo)
Purge control solenoid valve
Diagnostic output terminal
Oxygen sensor (front) heater
Oxygen sensor (rear) heater Oil feeder control valve
(for MIVEC)
Fuel pressure control
solenoid valve
AB

GENERAL INFORMATION
MULTIPOINT FUEL INJECTION (MPI) <4G1>13B-4
CONTROL SYSTEM DIAGRAM
AK600529AB
6 Oil feeder control valve
1 Oxygen sensor
(front)
8 Engine coolant
temperature sensor
3
Throttle valve control servo
10
Throttle position sensor (main)
5 Throttle position sensor (sub)
2 Purge control
solenoid valve
4 Fuel pressure
solenoid valve
7 Crank angle sensor
9
Detonation sensor
4
Intake air
temperature
sensor
3
Air flow sensor
Waste gate
actuator Canister
Check
valve Air by-pass valve
Fuel pressure regulatorFrom
fuel pump
To fuel
tank
Catalytic converter
Catalytic
converter
Air
inlet
Oxygen sensor (front)
Oxygen sensor (rear)
Air flow sensor
Intake air temperature
sensor
Throttle position
sensor
(sub)
Camshaft position
sensor
Crank angle sensor
Engine coolant
temperature sensor
Detonation sensor
Throttle position
sensor (main) Power supply
Ignition switch-IG
Ignition switch-ST
Accelerator pedal
position sensor
(main)
Accelerator pedal
position sensor
(sub)
Alternator FR
terminal
Stop lamp switch
Clutch switchEngine-
ECUEngine control relay
Fuel pump relay
A/C compressor relay
Throttle valve
control servo relay
Ignition coil
Cooling fan
control relay
(Hi, Lo)
Diagnosis output
Alternator G terminal
Oxygen sensor (front)
heater
Oxygen sensor (rear)
heater
Barometric
pressure
sensor
1 Injector
5 Waste gate
solenoid valve
2 Oxygen sensor
(rear)
6 Camshaft position sensor
1
2
3
4
5
6
7
8
9
10 Injector
Purge control
solenoid valve
Throttle valve
control servo
Fuel pressure
solenoid valve
Waste gate
solenoid valve
Oil feeder control
valve
1
2
3
4
5
6

GENERAL INFORMATION
MULTIPOINT FUEL INJECTION (MPI) <4G1>13B-6
Camshaft position sensorThis sensor detects the top-dead-center (TDC) of the
compression stroke of each cylinder.
Crank angle sensorThis sensor detects the crank angle and inputs it into
the engine-ECU. The engine-ECU effects injector
control and other controls in accordance with the
signals received from this sensor.
Detonation sensorThis sensor, which contains a piezoelectric element,
detects the vibration of the cylinder block that results
from knocking. The engine-ECU detects only the
knocking of the engine from these vibrations, in order
to retard the ignition timing in accordance with the
strength of the knocks.
Alternator FR terminalThis terminal is used for detecting the duty cycle ratio
that energizes the alternator field coil.
Stop lamp switchThis is a contact point type switch that detects how
the brake pedal is depressed.
Actuators
Engine control relayThis relay turns ON and OFF the engine-ECU power
circuit.
Throttle valve control servo relayThis relay turns ON and OFF the actuation power
circuit for the throttle valve control servo in the
engine-ECU.
InjectorThe injectors inject fuel in accordance with the
injection signals received from the engine-ECU.
Ignition coil (with power transistor)Applies ignition coil primary current intermittently in
accordance with the ignition signals received from
the engine-ECU, in order to generate high voltage for
ignition.
Fuel pump relayControls the power supplied to the fuel pump in
accordance with the signals received from the
engine-ECU.
A/C compressor relayControls the operation of the A/C compressor in
accordance with the signals received from the
engine-ECU.
Purge control solenoid valveControls the flow rate of the purge air introduced into
the inlet manifold in accordance with the signals
received from the engine-ECU.
Alternator G terminalControls the amount of current generated by the
alternator in accordance with the signals received
from the engine-ECU.
Cooling fan control relayControls the speed of the cooling fan in accordance
with the signals received from the engine-ECU.
Throttle valve control servoControls the throttle valve position in accordance with
the signals received from the engine-ECU.
ECU
Name Function

CONTROLLER AREA NETWORK (CAN)
MULTIPOINT FUEL INJECTION (MPI) <4G1>13B-13
CONTROLLER AREA NETWORK (CAN)
M2132019000300
Establishing communication without fail is designed
by CAN communication protocol. Refer to Group
54C-CAN
P.54C-2 for the details about CAN.
The signals input into engine-ECU are as follows:
CAN Communication Input Signal Table
Input signal nameTransmitter ECU
Motor electric current signalEPS-ECU
Compressor signalMeter and A/C-ECU
Idle-up request signal
Cooling fan request signal
SYSTEM CONFIGURATION DIAGRAM
AK600527AC
Engine-
ECU
M.U.T.-III
EPS-ECU ETACS
-ECU
Steering
wheel
sensor G and
yaw rate
sensor
ASC-ECU
CAN_H
CAN_L Diagnosis
connector Combination
meter
(incorporating
meter-A/C-ECU)
: Shows sub bus line. : Shows main bus line. Terminal resistor
Terminal resistor
Main bus lines

DIAGNOSIS SYSTEM
MULTIPOINT FUEL INJECTION (MPI) <4G1>13B-18
NOTE: Items marked "*" will not appear if a data list is selected in the check mode.
ACTUATOR TEST FUNCTION
The actuator test items are given in the table below
Item No.Inspection itemDrive contents
01InjectorsCut fuel to No.1 injector
02Cut fuel to No.2 injector
03Cut fuel to No.3 injector
04Cut fuel to No.4 injector
07Fuel pumpFuel pump operates and fuel is recirculated
08Purge control solenoid valveSolenoid valve turns from OFF to ON
12Waste gate solenoid valveSolenoid valve turns from OFF to ON
17Basic ignition timingSet to ignition adjustment mode
20Cooling fan control relay (high speed)Drive the fan motor at high speed
21Cooling fan control relay (low speed)Drive the fan motor at low speed
34Throttle valve control servoStop the throttle valve control servo
12*Air flow sensorgm/s
13*Intake air temperature sensor°C
21*Engine coolant temperature sensor°C
22*Crank angle sensorr/min
24*Vehicle speedkm/h
44*Ignition advancedeg
8A*Throttle position sensor (main)%
A1*Oxygen sensorV
Item No. Inspection item Unit

GENERAL INFORMATION
BODY42-2
GENERAL INFORMATION
M2420000100842
FEATURES
WEIGHT REDUCTION AND HIGH RIGID-
ITY
•Application ranges of high tension steel plate,
antirust steel plate, and uneven thickness steel
plate have been expanded.
•The upper frame outer and front pillar connection
has been strengthened by adopting the upper
frame-to-front pillar brace.
•The radius of each opening corner for the doors
and tailgate has been enlarged.
•Cowl top lower panel and spring house panel are
directly joined for higher rigidity.
•Strut tower bar has been adopted <4G1>.
•A front suspension axle side plate has been
adopted <4G1>.
•The air outlet garnish has been installed to the
hood, improving the sporty image and cooling
efficiency in the engine compartment. <4G1>
REDUCTION OF VIBRATION, NOISE, AND
AERODYNAMIC NOISE
•Straight frame structure has been adopted.
•Curved front floor and uneven thickness steel
plate have been adopted.
•Rigidity of the suspension installation part has
been improved.
IMPROVEMENTS IN SAFETY
•RISE (Reinforced Impact Safety Evolution) has
been used for the main body.
•Features a side door beam to boost safety upon
side impact.
•Direct combination key cylinder and inside lock
cables for the front doors have been adopted to
improve safety upon impact.
IMPROVEMENTS IN OPERATION
QUALITY
•The central door locking system, which
locks/unlocks all the doors and the tailgate, is
adopted.
•"P" position shift linked door-unlock function has
been introduced to the central door locking sys
-
tem(F1C1A).
IMPROVEMENTS OF PRODUCT
PACKAGE AND APPEARANCE
•Rigidity of door sash bottom section has been
improved.
•By improving the engaging sound between the
door latch and striker, the door locking sound
quality has been enhanced.
•UV & heat protect glass has been used for the
windshield.
•UV-reducing glass has been used for the front
door window glasses and rear door window
glasses.
•Privacy glasses have been used for rear door
window glasses, quarter window glasses, and
tailgate window glass (Option).
•Multi-mode keyless entry system (with door mir-
ror retraction/return control function) has been
adopted.
•Protector film has been attached on side sill
.
•Sunroof has been installed (Option).

HOOD <4G1>
BODY42-10
HOOD <4G1>
M2420023000404
AC601510 AB
Hood
Hood air outlet garnish
The air ou
tlet ga rnish has be en inst alle d to the hoo d,
imp
r oving the sport y image and cooling ef ficiency in
the eng
ine comp a r tment .
STRUT TO WER BAR <4G1>
M24200013 0014 0
CONSTRUCTION DIAGRAM
AC402435AB
Strut tower bar
A strut to we r bar ha s be en ado pted to the strut att a chment p o int t o improve body rigidity .

GROUP 14
ENGINE COOLING
CONTENTS
GENERAL INFORMATION . . . . . . . .14-2