engine MITSUBISHI COLT 2006 Service Repair Manual

GENERAL INFORMATION
ANTI-SKID BRAKE SYSTEM (ABS)35B-4
SYSTEM CONFIGURATION DIAGRAM
AC314168
Stop lamp switch
Front-right wheel speed sensor Rear-right wheel speed sensor
Rear-left wheel speed sensor Front-left wheel speed sensor
ABS-ECU power supply Engine-CVT-ECU
Front-right solenoid valve (out)
Front-right solenoid valve (in)
Front-left solenoid valve (out)
Front-left solenoid valve (in)
Rear-right solenoid valve (out)
Rear-right solenoid valve (in)
Rear-left solenoid valve (out)
Rear-left solenoid valve (in)
ABS-ECU
Hydraulic
unit Rear-right
wheel speed
sensor
Front right
wheel speed
sensor
Front-left
wheel speed
sensor Rear-left
wheel speed
sensor
Front-right wheel (FR)
Front-left wheel (FL) Rear-right wheel (RR)
Rear-left wheel (RL)
Stop lamp switch
AB
Brake warning lamp
ABS warning lamp
Diagnosis connector
NO TE: Broken lines show CAN-bus lin e.

GENERAL INFORMATION
ANTI-SKID BRAKE SYSTEM (ABS)35B-5
ABS ELECTRICAL CIRCUIT DIAGRAM
AC314169
Engine-CVT-ECU
Front wheel speed
sensor Rear wheel speed
sensor
Motor power
supply
Solenoid valve
power supply
ABS-ECU
Motor power
supply
Solenoid valve
Hydraulic unit
Stop lamp
switch J/B
(Fuse)
No.42
15A No.40
7.5A
Fusible
link No.1
Ignition
switch (IG1) Fusible
link No.5 Fusible
link No.3
J/B
(Fuse)
No.33
15A Fusible
link No.6
J/C
(CAN2)
J/C
(CAN1) Diagnosis connector
Combination meter
(ABS warning lamp and
brake warning lamp)
AB
(rear, right)
(front, right)
(front, left)
(rear, left)
On
Off

A/C-ECU
HEATER, AIR CONDITIONER AND VENTILATION55-8
A/C-ECU
M2551001200179
CONTROL SYSTEM
The manual and automatic A/Cs have the following
control functions.
ControlManual A/CAutomatic A/C
Automatic wind temperature change controlApplicableApplicable
Automatic outside/inside air selection controlApplicableApplicable
Idle-up controlApplicableApplicable
Cooling fun load controlApplicableApplicable
Cooling controlApplicableApplicable
Detection control for refrigerant leaksApplicableApplicable
MAX A/C controlNot applicableApplicable
Estimation control for compressor torqueApplicableApplicable
Defroster linked controlNot applicableApplicable
AUTOMATIC CHANGE CONTROL OF
BLOW WIND TEMPERATURE
(COMPRESSOR
ENERGY-CONSERVATION CONTROL)
Optimum ON/OFF control of the compressor is
achieved according to the outside/inside air mode,
air temperature (air temperature sensor), and insula
-
tion.
OUTSIDE/INSIDE AIR AUTO SWITCHING
CONTROL
When the A/C is turned on in high ambient tempera-
ture, the recirculation function is automatically acti-
vated to cool down the passenger compartment and
improve fuel consumption.
COOLING FUN LOAD CONTROL
Depending on the A/C load, the cooling fan cycle
time is controlled and the exterior noise in the inter
-
mediary stage is decreased. Also, the load of the
alternator is decreased to improve the fuel economy.
COOLING CONTROL
If air temperature is high, the CVT rotates at a high
speed to prevent deterioration in cooling perform
-
ance.
DETECTION CONTROL FOR
REFRIGERANT LEAKS
When it is judged from the air temperature (air tem-
perature sensor) and the refrigerant pressure (A/C
pressure sensor) that the refrigerant amount is the
specified value or less, or the refrigerant pressure is
abnormal, the compressor is forced to be cut off to
protect the A/C system.
MAX A/C CONTROL <VEHICLES WITH
AUTOMATIC A/C>
When MAX COOL position is set, automatically the
mode is changed to the inside air mode before the
A/C is turned ON, thereby facilitating the operation
for obtaining maximum cooling performance.
ESTIMATION CONTROL FOR
COMPRESSOR TORQUE
Communication between the engine⋅CVT-ECU and
A/C-ECU is made to control the engine according to
the compressor torque for higher drivability and
reduction in fuel consumption.
FORCIBLE DEFROSTER CONTROL
<VEHICLES WITH AUTOMATIC A/C>
When the defroster vents are selected, the A/C is
automatically turned ON. At this time, the out
-
side/inside air selection damper is operated to the
fresh-air position to defrost the windshield glass
quickly.

A/C-ECU
HEATER, AIR CONDITIONER AND VENTILATION55-9
COMMUNICATION
The A/C receives the following kinds of signals
through CAN communication.
SignalTransmitter ECU
Engine coolant
temperature signalEngine-CVT-ECU <CVT>
or Engine-ECU <M/T>
NOTE: . For further details on CAN, refer to GROUP
54C, CAN
P.54C-2.
DIAGNOSTIC FUNCTION
Code No.Diagnostic itemService data display
contents when
diagnosis code is set
B1011Ambient temperature sensor system (short circuit)20°C
B1012Ambient temperature sensor system (open circuit)
B1021Air thermo sensor system (short circuit)−6°C
B1022Air thermo sensor system (open circuit)
B1082Automatic/manual types abnormal error−
U1073Bus off error−
U1100Engine-CVT-ECU time-out
U1101
U1102ABS-ECU time-out
U1106EPS-ECU time-out
U1109ETACS-ECU time-out
U1120Failure information on engine-CVT-ECU (related to engine)
U1206Flag invalid

AIR INTAKE SYSTEM
INTAKE AND EXHAUST15-2
AIR INTAKE SYSTEM
AIR DUCT AND AIR CLEANER M2150004000504
CONSTRUCTION DIAGRAM
AC601193AB
Engine
air intake hose
<CVT>Air cleaner assembly
Air cleaner intake duct
<4A9>
Engine
air intake hose
<M/T>
Air cleaner resonator
AC402138
Engine air intake hose
Air cleaner assembly
Air cleaner intake duct
AB
<4G1>
AC402138
•An air cleaner reson a tor ha s bee n adop ted to
improve eng
ine p e rformance and re duce air
in
t a ke no ise <4A9>.
•A front air int a ke system that actively su cks co ol-
ing air from th e front throug h the to p of th e radia-
tor ha s b een ad opted in ord e r to improve en gine
perf
o rman ce a nd redu ce air int a ke noise.
•For the air clea ner int a ke duct, a ve ntur i d u ct with
a diaphra
g m on it s p a th has been adopte d to su p
-
press rise in air resist ance and reduce air int a ke
noise.
•In considerat ion of ind u strial waste red u ction an d
global environment, re
cyc led mate rials made
from eating ut
ensils and th e scrap s ha ve be en
ado
pted for t he air clean er body and cover of t he
air cleaner a
sse mbly .

AIR INTAKE SYSTEM
INTAKE AND EXHAUST15-3
INTERCOOLER <4G1>
M2150007000246
An air cooled intercooler has been adopted to lower
the intake air temperature drastically and improve
engine performance.
CONSTRUCTION DIAGRAM
AC600080AB
Intercooler inlet air ductAir by-pass valve
Intercooler assembly

EXHAUST SYSTEM
INTAKE AND EXHAUST15-7
EXHAUST PIPE AND MUFFLER <4A9>
M2150003000642
CONSTRUCTION DIAGRAM
AC601362AB
Centre exhaust pipeExhaust main muffler
Front exhaust pipeAnnular joint
Under floor catalytic converter
<M/T>
Exhaust pre-muffler
Insertion joint
AC601363AB
Centre exhaust pipeExhaust main muffler
Front exhaust pipeAnnular joint
Under floor catalytic converter
<CVT>
Exhaust pre-muffler
Insertion joint
Exhaust pipe consisting of th ree sep a ratio n system:
front exhaust pipe,
centre e x hau st pip e , and exhaust
main muf
f ler , has the fo llowing fea t ures:
•An exhaust pre-muff ler ha s be en in st alled to th e
ce
ntre exhaust pipe in order t o reduce exhaust
noise.
•An insertion joint has b een a dopted for the con-
nection between the centre exha ust p i pe and the
exhaust ma
in muf f ler to save the weight of the
exhaust system.
•The under floor cat a lytic con v erter has been
moved
clo s er to the e ngine side to impro v e
exhaust gas perfo
rmance.
•An annula r joint has been adopt ed for th e co n-
nection between the exhau st manifo ld an d the
fron
t exh aust pipe to redu ce th e exhaust pipe 's
vibration from the
engine side.

GROUP 11B
ENGINE
MECHANICAL
<4G1>
CONTENTS
GENERAL INFORMATIO N . . . . . . . .11B-2BASE ENGINE . . . . . . . . . . . . . . . . . .11B-3

GENERAL INFORMATION
ENGINE MECHANICAL <4G1>11B-2
GENERAL INFORMATION
M2112000101010
The 4G15-MIVEC-T/C engine employed in the Colt
is designed to provide higher performance and
higher output by using a turbocharger to the
4G15-MIVEC engine employed in the conventional
Colt. The main changes in the conventional
4G15-MIVEC engine are as follows:•Cylinder head gasket changed
•Oil jet added
•Strength improved in piston and piston pin
MAJOR SPECIFICATIONS
Item4G15-MIVEC-T/C
Total displacement mL1,468
Bore × Stro ke mm75 × 82.0
Compression ratio9.0
Compression chamberPentroof-type
Va l v e t i m i n gIntake openingBTDC 34° − AT D C 6°
Intake closingABDC 30° − ABDC 70°
Exhaust openingBBDC 50°
Exhaust closingATDC 10°
Maximum output kW (PS)/rpm113 (154)/6,000
Maximum torque N⋅m (kg⋅m)/rpm210 (21.4)/3,500
Fuel systemElectronically controlled multipoint fuel injection
Ignition systemElectronic-controlled 4-coil

BASE ENGINE
ENGINE MECHANICAL <4G1>11B-3
BASE ENGINE
M2112001000886
CYLINDER HEAD GASKET
AK402138
A
AC
AA-A
To co rrespo nd wi th the imp r ove d o u t put pe rfo r ma nce
by emplo
y in g the t u rbocharger , a three layer me t a l
gasket is used.
CYLINDER BLOCK
AK402048AC
Oil jet
The cylinder bl ock has the oil jet fitted o n the main
bearin
g among th e cylin ders in ord e r to make the
pist
on cool. T he oil is injecte d from the o il g r oove of
the main b
earin g when th e oil pressure is 2kg/ cm
2 or
more.