2006 MITSUBISHI COLT relay

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

THROTTLE VALVE OPENING ANGLE CONTROL AND IDLE SPEED CONTROL
MULTIPOINT FUEL INJECTION (MPI) <4G1>13B-8
THROTTLE VALVE OPENING ANGLE CONTROL AND IDLE
SPEED CONTROL
M2132003500209
The following control is basically the same as those
of the 4G1-Non-Turbo engine used in the COLT, the
following improvements have been added.
•Clutch monitor switch
The clutch monitor switch inputs the signal into the
engine-ECU to transmit the information about
whether the clutch pedal is depressed or not. By this
signal, the engine-ECU identifies the clutch pedal is
depressed when the transmission is shifted, and per
-
form the following control. When the clutch pedal is
depressed, the throttle valve is automatically closed
and the ignition timing is retarded at the same time.
System Configuration Diagram
AK401884AF
Motor drive power
supply
(From throttle valve
control servo relay)
Engine-ECU
Throttle
position
sensor
Main Sub Sub Main
Throttle valve
control servo Accelerator
pedal position
sensor
Throttle valve control unit
Engine control unit
Motor drive circuit

FUEL PRESSURE CONTROL
MULTIPOINT FUEL INJECTION (MPI) <4G1>13B-10
FUEL PRESSURE CONTROL
M2132020000069
Normally, the negative pressure in the intake mani-
fold acts upon the fuel pressure regulator to maintain
the fuel pressure at a constant level with regard to
the pressure inside the intake manifold, causing the
amount of fuel injected to be controlled proportion to
the injector drive time. However, if the engine is
started while the engine coolant temperature and the
intake air temperature are high, the engine-ECU makes current flow to the fuel pressure control sole
-
noid valve to activate the fuel pressure regulator by
means of atmospheric pressure. Because of this, the
generation of fuel vapour due to the high fuel pres
-
sure and high temperature is avoided, and the idling
stability immediately after restarting the engine at
high temperature is maintained.
AK402663
To fuel
tank
From
fuel
pump
Fuel pressure
regulator
Fuel pressure
control solenoid
AB
Engine control
relay
Engine coolant temperature
sensorIntake air temperature
sensor
Engine-ECU
Battery

WASTE GATE CONTROL
MULTIPOINT FUEL INJECTION (MPI) <4G1>13B-11
WASTE GATE CONTROL
M2132013000078
Turbo pressure used in the waste gate actuator is
controlled by duty control of the waste gate solenoid
valve. As a result, turbo pressure corresponding to
driving conditions can be obtained.
AK402657
Waste gate
solenoid valveWaste gate
actuator
Battery Engine-ECU Crank angle sensor
Engine
control relay
Air flow sensor
Air by-pass valve
Air
inlet Intercooler
Turbocharger
AB
AK305437
Solenoid
On SolenoidSpring set pressure
Set pressure Actual turbo
pressure (kPa)
Turbo pressure acting on waste
gate actuator (kPa)
OFFAB
The eng
ine-ECU turns the power tran sistor ON and,
whe
n normal curren t (duty 100% ) flows in th e waste
gate solen
o id valve coil, the waste gat e solenoid valve do es n o t ope n if tu rbo pre ssu re does not rise
above the set pre s sure of th e waste gate actua t or
spring since some of the turb o pressure used in th e
wa ste g a te actuato r leaks o u t.
On the ot
her hand, when current do es not flow in the
wa
ste g a te soleno id valve co il (d uty 0 % ), the wa ste
gate valve ope
ns if turbo pressure rise to the set
pressure o
f the waste gat e act uator sprin g since no
pressure leaks out
.
Conseq uently , by u s in g duty co ntrol for the waste
g
a te solen o id valve, turbo pressu re can b e con t ro lled
in a range
f r om 0% to 1 00% duty . Th is du ty co ntrol is
performed in cycles of
approximately 60ms.

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-16
P0500Vehicle speed sensor systemOpen circuit or short-circuit in
sensor-related circuitsON
P0513Immobilizer malfunctionOpen circuit or short-circuit in
sensor-related circuits−
P0603EEPROM malfunctionAbnormality in engine-ECU−
P0606Engine-ECU main processor
malfunctionAbnormality in engine-ECUON
P0622Alternator FR terminal systemOpen circuit or short-circuit in
system-related circuits−
P0638Throttle valve control servo circuit
range/performance problemAbnormal throttle valve control
servoON
P0642Throttle position sensor power
supply malfunctionOpen circuit or short-circuit in
sensor-related circuitsON
P0657Throttle valve control servo relay
circuit malfunctionOpen circuit or short-circuit in
sensor-related circuitsON
P1021Oil feeder control valve systemOpen circuit and short-circuit in
solenoid valve-related circuits−
P1231Trustful check active stability
control (ASC)ABS/ASC-ECU−
P1233Trustful check throttle position
sensor (main)Abnormality in throttle position
sensor (main)ON
P1234Trustful check throttle position
sensor (sub)Abnormality in throttle position
sensor (sub)ON
P1235Trustful check air flow sensorAbnormality in air flow sensorON
P1236A/D converter systemAbnormality in engine-ECUON
P1237Trustful check accelerator pedal
position sensorAbnormality in accelerator pedal
position sensorON
P1238Air flow sensor trustful for torque
monitoringAbnormality in engine-ECUON
P1239Trustful check engine speedAbnormality in engine-ECUON
P1240Trustful check ignition angleAbnormality in ABS/ASC-ECU−
P1241Torque monitoringAbnormality in engine-ECUON
P1602Communication malfunction
(between engine-ECU main
processor and system LSI)Abnormality in engine-ECUON
P1603Battery back-up circuit malfunctionOpen circuit or short-circuit in
system-related circuitsON
P2100Throttle valve control servo circuit
(open)Open circuit in throttle valve control
servo-related circuitON
P2101Throttle valve control servo
magneto malfunctionShort-circuit in system-related
circuitsON
P2108Throttle valve control servo
processor malfunctionAbnormality in engine-CVT-ECUON
Code No. Diagnosis item Main diagnosis contents Engine
warning lamp

DIAGNOSIS SYSTEM
MULTIPOINT FUEL INJECTION (MPI) <4G1>13B-17
DATA LIST FUNCTION
The data list items are given in the table below
P2122Accelerator pedal position sensor
(main) circuit low inputOpen circuit or short-circuit in
sensor-related circuitsON
P2123Accelerator pedal position sensor
(main) circuit high inputOpen circuit in sensor-related
circuitsON
P2127Accelerator pedal position sensor
(sub) circuit low inputOpen circuit or short-circuit in
sensor-related circuitsON
P2128Accelerator pedal position sensor
(sub) circuit high inputOpen circuit in sensor-related
circuitsON
P2135Throttle position sensor (main and
sub) range/performance problemAbnormal sensor outputON
P2138Accelerator pedal position sensor
(main and sub) range/performance
problemAbnormal sensor outputON
U1073Bus offAbnormality in CAN bus line−
U1102ASC-ECU time-outAbnormality in CAN bus line−
U1106EPS-ECU time-outAbnormality in CAN bus line−
U1108Combination meter time-outAbnormality in CAN bus line−
U 111 0A/C-ECU time-outAbnormality in CAN bus line−
Code No. Diagnosis item Main diagnosis contents Engine
warning lamp
Item No.Inspection itemUnit
11Oxygen sensormV
12Air flow sensorg/s
13Intake air temperature sensor°C
14Throttle position sensor (sub)mV
16Power supply voltageV
18Cranking signal (ignition switch-ST)ON/OFF
21Engine coolant temperature sensor°C
22Crank angle sensorr/min
25Barometric pressure sensorkPa
29Inhibitor switchP or N/D, 2, L, or R
37Volumetric efficiency%
41Injectorsms
44Ignition advance°BTDC
49A/C relayON/OFF
67Stop lamp switchON/OFF
77Accelerator pedal position sensor (sub)mV
78Accelerator pedal position sensor (main)mV
79Throttle position sensor (main)mV
7EVariable valve timing phase angle°CA