
DIAGNOSIS SYSTEM
MULTIPOINT FUEL INJECTION (MPI) <4A9>13A-15
P0125*Feedback system monitorOxygen sensor not operatingON
P0130Oxygen sensor (front) systemOpen circuit or short-circuit in
sensor-related circuitsON
P0135Oxygen sensor (front) heater
systemOpen circuit or short-circuit in
heater-related circuitsON
P0136Oxygen sensor (rear) systemOpen circuit or short-circuit in
sensor-related circuitsON
P0141Oxygen sensor (rear) heater
systemOpen circuit or short-circuit in
heater-related circuitsON
P0170Abnormal fuel systemLeanness or richness problemON
P0201No.1 injector systemOpen circuit or short-circuit in
injector-related circuitsON
P0202No.2 injector systemOpen circuit or short-circuit in
injector-related circuitsON
P0203No.3 injector systemOpen circuit or short-circuit in
injector-related circuitsON
P0204No.4 injector systemOpen circuit or short-circuit in
injector-related circuitsON
P0222*Throttle position sensor (sub)
circuit low inputOpen circuit or short-circuit in
sensor-related circuitsON
P0223*Throttle position sensor (sub)
circuit high inputOpen circuit in sensor-related
circuitsON
P0300*Random/multiple cylinder misfire
detectedMisfiringON
P0301*No.1 cylinder misfire detectedMisfiringON
P0302*No.2 cylinder misfire detectedMisfiringON
P0303*No.3 cylinder misfire detectedMisfiringON
P0304*No.4 cylinder misfire detectedMisfiringON
P0325Detonation sensor systemAbnormal sensor outputON
P0335Crank angle sensor systemAbnormal sensor outputON
P0340Camshaft position sensor systemAbnormal sensor outputON
P0403
systemOpen circuit or short-circuit in
valve-related circuitsON
P0421Warm up catalyst malfunctionAbnormal exhaust gas purification
performance of catalystON
P0443Purge control solenoid valve
systemOpen circuit or short-circuit in
solenoid valve-related circuitsON
P0500
sensor-related circuitsON
P0513Immobilizer malfunctionOpen circuit or short-circuit in
sensor-related circuits−
P0603EEP ROM malfunctionAbnormality in engine-ECU
or engine-CVT-ECU
Code No. Diagnosis item Main diagnosis contents Engine
warning lamp
![MITSUBISHI COLT 2006 Service Repair Manual
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 open MITSUBISHI COLT 2006 Service Repair Manual
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 open](/manual-img/19/57093/w960_57093-116.png)
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

OTHER CONTROL FUNCTIONS
MULTIPOINT FUEL INJECTION (MPI) <4G1>13B-12
OTHER CONTROL FUNCTIONS
M2132010000648
The following controls are basically the same as
those of the 4G1-Non-Turbo engine used in the
COLT.
•ENGINE CONTROL RELAY CONTROL
•THROTTLE VALVE CONTROL SERVO RELAY
CONTROL
•MIVEC (Mitsubishi Innovative Valve Timing Elec-
tronic Control System)
•FUEL PUMP RELAY CONTROL
•OXYGEN SENSOR (front) HEATER CONTROL
•OXYGEN SENSOR (rear) HEATER CONTROL
•FAN RELAY CONTROL
•A/C RELAY CONTROL
•ALTERNATOR CONTROL

DIAGNOSIS SYSTEM
MULTIPOINT FUEL INJECTION (MPI) <4G1>13B-15
P0123Throttle position sensor (main)
circuit high inputShort-circuit in sensor-related
circuitsON
P0125Feedback system monitorOxygen sensor not operatingON
P0130Oxygen sensor systemOpen circuit or short-circuit in
sensor-related circuitsON
P0135Oxygen sensor heater systemOpen circuit or short-circuit in
heater-related circuitsON
P0136Oxygen sensor (rear) systemOpen circuit or short-circuit in
sensor-related circuitsON
P0141Oxygen sensor heater (rear)
systemOpen circuit or short-circuit in
heater-related circuitsON
P0170Abnormal fuel systemLeanness or richness problemON
P0201No. 1 injector systemOpen circuit or short-circuit in
injector-related circuitsON
P0202No. 2 injector systemOpen circuit or short-circuit in
injector-related circuitsON
P0203No. 3 injector systemOpen circuit or short-circuit in
injector-related circuitsON
P0204No. 4 injector systemOpen circuit or short-circuit in
injector-related circuitsON
P0222Throttle position sensor (sub)
circuit low inputOpen circuit or short-circuit in
sensor-related circuitsON
P0223Throttle position sensor (sub)
circuit high inputOpen circuit in sensor-related
circuitsON
P0243Abnormal waste gate systemAbnormal in waste gate solenoid
valve−
P0300Random cylinder misfire detection
systemAbnormal ignition signal (Misfiring)ON
P0301No. 1 cylinder misfire detection
systemMisfiringON
P0302No. 2 cylinder misfire detection
systemMisfiringON
P0303No. 3 cylinder misfire detection
systemMisfiringON
P0304No. 4 cylinder misfire detection
systemMisfiringON
P0325Detonation sensor systemAbnormal sensor outputON
P0335Crank angle sensor systemAbnormal sensor outputON
P0340Camshaft position sensor systemAbnormal sensor outputON
P0421Catalyst malfunctionAbnormal exhaust gas purification
performance of catalystON
P0443Purge control solenoid valve
systemOpen circuit or short-circuit in
solenoid valve-related circuitsON
Code No. Diagnosis item Main diagnosis contents Engine
warning lamp

TECHNICAL FEATURES
GENERAL00-12
ATF WARMER (ATF COOLER) <4A9>
AC403052AC
AT F
Engine coolant
Sectional view
ATF Warmer
(ATF Cooler)
Thermo valve
AC403006
CVT CVT CVT
Thermostat
Thermo
valve
ATF warmer (ATF cooler)ATF warmer (ATF cooler)
: Engine coolant
: ATF
Engine coolant flows through
all the sections.
- 85˚C>
Engine coolant flows through
the heater and the ATF warmer.
Engine coolant flows through
the heater only.
AD
: Valve open
: Valve closed
Thermostat
Thermo
valve
ATF warmer (ATF cooler)Thermo
valve
Thermostat
Radiator
Engine Heater
Radiator Engine Heater
Radiator
Engine Heater
The A TF warme r (A TF cooler) is adop ted for the
mode ls with 4A9 en gine. (the A TF cooler incorporat
-
ing the radiator is no t adopted)
At the start of runn ing, the tempe rature of th e engine
coolant rises earlier tha n that of the AT F. The A TF
war mer ut ilizes this ch aracteristic to raise the ATF
tempe rature a s ea rly a s po ssible to an a ppropriate
leve l (70
−80 °C). It also co ntrols flu id tempera ture st
ably and reduces A TF agitation resist ance to
imp rove f uel consump tion ra tio.
In addition , a thermo-valve has bee n adopted to
restrict the eng ine coolant supply to the A TF warmer
(A TF coole r) until the engine co olant temperature
reach es th e appro priat e temperature when low tem
-
perature start in winter , giving the priority to th e heat-
ing performance .

TECHNICAL FEATURES
GENERAL00-28
ENVIRONMENTAL PROTECTION
M2000027000279
Mitsubishi has given careful consideration to protec-
tion of natural resources and the environment in the
vehicle. Environmentally friendly features are shown
below.
IMPROVEMENT ON RECYCLING EFFICIENCY
ClassificationMain Components
Components made
of recycled
materialsChip materials produced during manufacturing process has been reused as the
following components: Door inside handle, bu mper, radiator grille, instrument panel,
door trims, or floor padding.
Waste materials produced by other i ndustries have been reused as the following
components: Engine oil level gauge, air filter casing, and sound absorbing materials
for dash panel
Components made
of materials which
can be easily
recycledThermoplastic resin has been utilised as the following components: Inside door
handle, bumper, radiator grille, instrument panel, door trim
Thermoplastic resin has been utilised as t he following components: Vacuum hose for
engine control, air intake hose, hood weather strip, tailgate opening weather strip
REDUCTION OF MATERIAL BURDEN ON ENVIRONMENT
ItemMain Components
Elimination of
environmental
burden materialsLead-free materials have been utilised as the following components: Radiator, fuel
tank, power steering oil pressure hose, el ectrodeposition paint for body, glass ceramic
print, heater core, battery terminals, wiring harness
Non-asbestos material has been used for engine gaskets.
PVC(polyvinyl chloride)-free materials ha ve been used for the waterproofing film.
Prevention of
ozone depletionAir conditioner filled with new refrigerant (HFC 134a) has been installed.
Prevention of air
pollutionEmployment of a metal cylinder head gasket reduces the volume of incomplete
combustion generated between the cylinder block and cylinder head, and suppresses
the level of unburned hydrocarbon (HC).
SERVICEABILITY AND RELIABILITY
M2000028000528
MULTI USE TESTER-III (M.U.T.-III) SUB
ASSEMBLY
Comprehensive improvements have been made to
the M.U.T.-II, a tester for diagnosing problems with
the electronic control system. For easier servicing,
the newly developed M.U.T.-III has greatly improved
functions and is much easier to use. The M.U.T.-III
expands the functions of the M.U.T.-II in the following
ways:
1.CAN* bus diagnosis
•Auto diagnosis function for the CAN commu-
nications bus line is added.
NOTE: *CAN: Controller Area Network (for further
details, refer to GROUP 54C
P.54C-2).

MAIN INDEX
00Genera l. . . . . . . . . . . . . . . . . . . . . . . .
11Engin e. . . . . . . . . . . . . . . . . . . . . . . . .
12Engine Lubricatio n . . . . . . . . . . . . . .
13Fuel. . . . . . . . . . . . . . . . . . . . . . . . . . .
14Engine Coolin g . . . . . . . . . . . . . . . . .
15Intake and Exhaus t . . . . . . . . . . . . . .
16Engine Electrica l . . . . . . . . . . . . . . . .
17E ngine an d Emissi on Contro l. . . . . .
21Clutc h . . . . . . . . . . . . . . . . . . . . . . . . .
22Manual Transmissio n . . . . . . . . . . . .
23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26Front Axl e. . . . . . . . . . . . . . . . . . . . . .
27Rear Axl e . . . . . . . . . . . . . . . . . . . . . .
31Wheel and Tyr e . . . . . . . . . . . . . . . . .
32Power Plant Moun t . . . . . . . . . . . . . .
33Front Suspensio n . . . . . . . . . . . . . . .
34Rear Suspensio n. . . . . . . . . . . . . . . .
35Service Brake s. . . . . . . . . . . . . . . . . .
36Parking Brake s. . . . . . . . . . . . . . . . . .
37Steerin g . . . . . . . . . . . . . . . . . . . . . . .
42Bod y . . . . . . . . . . . . . . . . . . . . . . . . . .
51Exterio r. . . . . . . . . . . . . . . . . . . . . . . .
52Genera l. . . . . . . . . . . . . . . . . . . . . . . .
54Chass is Electrica l . . . . . . . . . . . . . . .
55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COLT
TECHNICAL
INFORMATION MANUAL
FOREWORD
This manual has been prepared as an introduction to
the specifications, features, construction, functions,
etc. of the newly developed COLT.
Please read this manual carefully so that it will be of
assistance for your service activities. Please note the
following service manuals are also available and
should be used in conjunction with this manual.
WORKSHOP MANUAL
CHASSIS GROUP
BODY REPAIR MANUAL
PARTS CATALOGUE
All information, illustra tions and product descriptions
contained in this manual are current as of the time of
publication. We, however, reserve the right to make
changes at any time without prior notice or obligation.
© Mitsubishi Motors Corporation 2006
Interior and Supplemental
Restraint System (SR S) . . . . . . . . . .
Heater, Air Conditioner and
Ventila tio n . . . . . . . . . . . . . . . . . . . . .
Continuously Variable
Transmission (CVT ). . . . . . . . . . . . . .