2006 MITSUBISHI COLT catalytic converter

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

Exhaust pre-muffler
Insertion joint
AC601363AB
Centre exhaust pipeExhaust main muffler
Front exhaust pipeAnnular joint
Under floor catalytic converter

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.

EXHAUST SYSTEM
INTAKE AND EXHAUST15-8
EXHAUST PIPE AND MUFFLER <4G1>
M2150003000653
CONSTRUCTION DIAGRAM
AC601366AB
Centre exhaust pipeExhaust main muffler
Front exhaust pipe
Under floor
catalytic converter
Exhaust pre-muffler
Front
catalytic
converter
Insertion joint
Annular joint
Exhaust pipe co
nsisting 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.
•An annula r joint has been adopt ed for th e co n-
nection between the fro n t exhaust pip e and the
fron
t cat a lytic co nvert e r has been adopt ed to
redu
ce vibra t ion from th e eng ine side .
•A front cat a lytic co nvert e r and an und er floo r cat-
alytic conver ter have bee n adop ted to imp r ove
exhaust gas perfo
rmance.

GENERAL INFORMATION
MULTIPOINT FUEL INJECTION (MPI) <4A9>13A-4
CONTROL SYSTEM DIAGRAM

AK600525
1 Oxygen sensor
(front)4 Intake air temperature
sensor
3 Manifold absolute
presssure sensor
2 Oxygen sensor (rear) 3 Throttle valve control
servo
10 Throttle position sensor
(main)
2 Purge control
solenoid valve
8 Engine coolant
temperature sensor
9 Detonation sensor
7 Crank angle sensor
6 Camshaft position sensor
4 Oil feeder control valve
1 Injector
AB
M
1 Oxygen sensor (front)
2 Oxygen sensor (rear)
3 Manifold absolute
presssure sensor
4 Intake air temperature
sensor
5 Throttle position
sensor
(sub)
6 Camshaft position
sensor
7 Crank angle sensor
8 Engine coolant
temperature sensor
9 Detonation sensor
10 Throttle position
sensor (main) 1 Injector
2 Purge control
solenoid valve
3 Throttle valve control
servo
4 Oil feeder control
valve
Power supply
Ignition switch-IG
Ignition switch-ST
Accelerator pedal
position sensor
(main)
Accelerator pedal
position sensor
(sub)
Alternator FR
terminal
Stop lamp switchEngine-ECUEngine control relay
Fuel pump relay
A/C compressor relay
Throttle valve
control servo relay
Ignition coil
Cooling fan
control relay
Diagnosis output
Alternator G terminal
Oxygen sensor heater
(front)
Oxygen sensor heater
(rear)
Canister Air
inlet
Catalytic converter From fuel
pump
5 Throttle position sensor
(sub)
Barometric
pressure
sensor

GENERAL INFORMATION
MULTIPOINT FUEL INJECTION (MPI) <4A9>13A-5

AK403079
1 Oxygen sensor
(front)4 Intake air temperature
sensor
3 Manifold absolute
presssure sensor
2 Oxygen sensor (rear) 4 Throttle valve control
servo
10 Throttle position sensor
(main)
2 EGR valve
(stepper motor) 3 Purge control
solenoid valve
8 Engine coolant
temperature sensor
9 Detonation sensor
7 Crank angle sensor
6 Camshaft position sensor
5 Oil feeder control valve
1 Injector
AC
1 Oxygen sensor (front)
2 Oxygen sensor (rear)
3 Manifold absolute
presssure sensor
4 Intake air temperature
sensor
5 Throttle position
sensor (sub)
6 Camshaft position
sensor
7 Crank angle sensor
8 Engine coolant
temperature sensor
9 Detonation sensor
10 Throttle position
sensor (main) 1 Injector
2 EGR valve
(stepper motor)
3 Purge control
solenoid valve
4 Throttle valve control
servo
5 Oil feeder control
valve
Power supply
Ignition switch-IG
Ignition switch-ST
Accelerator pedal
position sensor
(main)
Accelerator pedal
position sensor
(sub)
Inhibitor switch
Alternator FR
terminal
Stop lamp switchEngine-
CVT-ECUEngine control relay
Fuel pump relay
A/C compressor relay
Throttle valve
control servo relay
Ignition coil
Cooling fan
control relay
Diagnosis output
Alternator G terminal
Oxygen sensor heater
(front)
Oxygen sensor heater
(rear)
Canister Air
inlet
Catalytic converter From fuel
pump
5 Throttle position sensor
(sub)
Barometric
pressure
sensor

FUEL INJECTION CONTROL
MULTIPOINT FUEL INJECTION (MPI) <4A9>13A-9
FUEL INJECTION CONTROL
M2132003000840
This control system is basically the same as that of
the 4G1-Non-Turbo engine used in the COLT.
System Configuration Diagram
AK600487
Catalytic
converterInjector
From fuel
pump
AB
Manifold absolute pressure sensor
Engine-ECU
or
Engine-CVT-
ECU Barometric pressure sensor
Intake air temperature sensor
Engine coolant temperature sensor
Throttle position sensor
Accelerator pedal position sensor Detonation sensor
Camshaft position sensor Crank angle sensor
Ignition switch-ST Oxygen sensor (front)
Oxygen sensor (rear)

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

EMISSION CONTROL
ENGINE AND EMISSION CONTROL17-3
EMISSION CONTROL
GENERAL INFORMATION <4A9>M2171000100838
Although the emission control systems are basically
the same as those of the 4G1-Non-Turbo engine
used in the COLT, the following improvements have
been added.•The adoption of the catalytic converter just
beneath exhaust manifold realizes the earlier
activation.
•The adoption of the dual oxygen sensor has
increased reliability air/fuel ratio control.
•
SystemRemarks
Crank case ventilaton systemClosed type
Evaporative emission control systemElectronic control type with duty signal
Exhaust gas recirculation (EGR) system Electronic control (stepper motor) type
Air/fuel ratio closed loop controlOxygen sensor signal used
Catalytic converterThree-way catalytic converter
The abolition of the EGR system .
EMISSION CONTROL SYSTEM DIAGRAM
AK402829
Oxygen sensor (front)
Oxygen sensor (rear)
Air
inlet
EGR valve
(stepper motor)
Canister
Purge control
solenoid valve
Injector
PCV valve
ACCatalytic converter From
fuel pump

EMISSION CONTROL
ENGINE AND EMISSION CONTROL17-4
GENERAL INFORMATION <4G1>
M2171000100849
Although the emission control systems are basically
the same as those of the 4G1-Non-Turbo engine
used in the COLT, the following improvements have
been added.
•The adoption of the catalytic converter just
beneath turbo charger and under the floor
increased the performance of the emission con
-
trols.
•The adoption of the check valve between the
purge control solenoid valve and the canister pro
-
tects the regurgitation as turbocharging.
•
SystemRemarks
Crank case ventilaton systemClosed type
Evaporative emission control systemElectronic control type with duty signal
Air/fuel ratio closed loop controlOxygen sensor signal used
Catalytic converterThree-way catalytic converter
The abolition of the EGR system
EMISSION CONTROL SYSTEM DIAGRAM
AK600530AB
Canister
Purge control
solenoid valve Fuel pressure control
solenoid valve
Check valve
Waste gate
solenoid valve Waste gate
actuator
Air
inlet
Catalytic
converter
Catalytic
converter Injector
From
fuel pump
Fuel pressure
regulator
To
fuel tank
Oxygen sensor
(front)
Oxygen sensor
(rear)