ABS MITSUBISHI COLT 2006 Service User Guide

CONSTRUCTION DESCRIPTION
ANTI-SKID BRAKE SYSTEM (ABS)35B-11
SERVICE DATA OUTPUT
The following items of the ECU input data can be
read using M.U.T.-III.
Item No.Check itemCheck conditionNormal condition
01FR wheel speed sensorPerform a test run of the vehicle.Speedometer display and
M.U.T.-III display almost agree
with each other.
02FL wheel speed sensor
03RR wheel speed sensor
04RL wheel speed sensor
05Power supply voltageAlways10 V or more
06Stop lamp switchThe brake pedal is depressedON
The brake pedal is released.OFF
07Va l v e r e l a yWhen ABS is operatingON
When ABS is not operatingOFF
10FL inlet valve When ABS is operatingON
When ABS is not operatingOFF
11FL outlet valve When ABS is operatingON
When ABS is not operatingOFF
12FR inlet valve When ABS is operatingON
When ABS is not operatingOFF
13FR outlet valve When ABS is operatingON
When ABS is not operatingOFF
14RL inlet valve When ABS is operatingON
When ABS is not operatingOFF
15RL outlet valve When ABS is operatingON
When ABS is not operatingOFF
16RR inlet valve When ABS is operatingON
When ABS is not operatingOFF
17RR outlet valve When ABS is operatingON
When ABS is not operatingOFF
20Pump motorWhen ABS is operatingON
When ABS is not operatingOFF

CONSTRUCTION DESCRIPTION
ANTI-SKID BRAKE SYSTEM (ABS)35B-12
ACTUATOR TEST
AC300188AD
Activation PatternAB
C Start of
activation
1 s 2 s
On
Off
Note
A:
B:
C: Hydraulic pressure increases
Hydraulic pressure holds
Hydraulic pressure decreases End of
activation
Solenoid
valve
Pump
motor
The M.U.T . -III can be u s ed to force-drive a ll sole noid
valves and th
e pump mo tor .
NOTE: .
•Whe n ABS-ECU is disabled, the actu ator te st
cannot b
e perfo rmed.
•The actu ator test can be p e rformed on ly whe n
the
veh i cle is st a t iona ry . Whe n the ve hicle speed
rea
c h e s 10km/h, the f o rcible a c t uator operation is
disabled.
•During actuator test, the ABS warning lamp illu-
minates , an d ABS contro l is proh ibit ed.
Item No.Check itemDrive Contents
01Solenoid valve for
front-right wheelSolenoid valves
and pump motor in
the hydraulic unit
(simple inspection
mode)
02Solenoid valve for
front-left wheel
03Solenoid valve for
rear-right wheel
04Solenoid valve for
rear-left wheel

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
or Engine-ECU
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

GENERAL INFORMATION
REAR SUSPENSION34-2
GENERAL INFORMATION
M2340000100825
Newly developed H-shaped torsion beam type sus-
pension has been introduced.
•The coil spring is installed under the rear floor,
the torsion beam and arm assembly is installed in
front of the spare tyre house, and the shock
absorber is installed outside, so that the large
cabin space is achieved.
•The arm bushing with the toe control function is
adopted to optimise the tyre steering angle using
the bushing deflection caused by lateral force
and longitudinal force generated at cornering, so
that the good cornering performance is secured.
•The layout of shock absorber is optimised for
smooth riding.
•Long wheel stroke secures sufficient road holding
quality.
•The hub-integrated unit bearing is adopted for the
wheel bearing for sufficient suspension rigidity
(Refer to GROUP 27, Rear Axle
P.27-2).
•The dumping characteristic of shock absorber
has been changed. <4G1>
•The urethane bump stopper has been adopted to
improve the linearity. <4G1>
•Torsion beam rigidity has been improved <4G1>
CONSTRUCTION DIAGRAM
AC405533AD
Coil spring
Shock absorber
Torsion beam and arm assembly
Arm bushing
Torsion bar
Section A – A
<4G9>
A
A Torsion beam and arm assembly
Section A – A
<4G1>
Torsion beam and arm assembly

GENERAL INFORMATION
MULTIPOINT FUEL INJECTION (MPI) <4A9>13A-3
SYSTEM BLOCK DIAGRAM
AK600486
Barometric pressure sensorThrottle valve control servo
Manifold absolute pressure
sensor
Engine coolant
temperature sensor
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
A/C compressor relay
Fuel pump relay
Alternator G terminal
Cooling fan control relay
Purge control solenoid valve
Diagnostic output terminal
Intake air temperature 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
Inhibitor switch
Detonation sensor
Ignition switch-IG
Ignition switch-ST
Stop lamp switch
Power supply
Accelerator pedel
position sensor (sub) Throttle position sensor (main)
Throttle valve control unitEngine control unit
Engine-ECU or
Engine-CVT-ECU
Throttle opening feedback control Oxygen sensor heater (front)
Oxygen sensor heater (rear)
[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 heater
control
[9] Fan relay control
[10] A/C compressor relay
control
[11] Alternator control
[12] Purge control
[13] EGR control
[14] Diagnostic output
[15] RAM data transmission
Oil feeder control valve
(for MIVEC)
EGR valve
(Stepper motor)
AB

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

GENERAL INFORMATION
MULTIPOINT FUEL INJECTION (MPI) <4A9>13A-6
List of Component Functions
NameFunction
ECU
Engine-ECU or engine-CVT-ECU The signals that are input by the sensors enable the
actuators to be controlled in accordance with the
driving conditions.
Sensors
Ignition switch-IGThis signal indicates the ON/OFF condition of the
ignition switch. When this signal is input, the
engine-ECU or engine-CVT-ECU
supplies power to the crank angle sensor, camshaft
position sensor, etc.
Ignition switch-STThis signal indicates that the engine is cranking.
Based on this signal, the engine-ECU or
engine-CVT-ECU controls the fuel injection,
throttle valve position, and the injection timing that
are suited for starting the engine.
Manifold absolute pressure sensor Uses a pressure conversion element to detect the
pressure in the intake manifold, converts it into a
voltage signal, and outputs it to the
engine-ECU or engine-CVT-ECU. The
engine-ECU or engine-CVT-ECU
optimally corrects the fuel injection amount and the
like based on this signal.
Oxygen sensor This sensor, which contains zirconia and platinum
electrodes, detects the level of oxygen concentration
in the exhaust gases. The engine-ECU or
engine-CVT-ECU determines whether the
air-fuel ratio is at the optimal stoichiometric ratio in
accordance with this oxygen concentration level.
Barometric pressure sensorThis sensor detects the altitude of the vehicle. It
enables the engine-ECU or engine-CVT-ECU
to make fuel injection volume corrections in
order to achieve an appropriate air-fuel ratio.
Intake air temperature sensorThis sensor, which contains a thermistor, detects the
temperature of the intake air. The engine-ECU
or engine-CVT-ECU makes fuel injection
volume corrections that suit the intake air
temperature, in accordance with the voltage that is
output by this sensor.
Engine coolant temperature sensorThis sensor, which contains a thermistor, detects the
temperature of the engine coolant. The engine-ECU
or engine-CVT-ECU determines the
warm-up condition of the engine in accordance with
the voltage that is output by this sensor, in order to
control the fuel injection volume, idle speed, and
ignition timing.

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)

IGNITION TIMING AND DISTRIBUTION CONTROL
MULTIPOINT FUEL INJECTION (MPI) <4A9>13A-11
IGNITION TIMING AND DISTRIBUTION CONTROL
M2132005000750
This control system is basically the same as that of
the 4G1-Non-Turbo engine used in the COLT.
System Configuration Diagram
AK402031
Ignition switch-IG
Ignition
coil Battery
Spark plug
Cylinder No. 1 2 3 4
Manifold absolute
pressure sensor
Intake air temperature sensor
Barometric pressure sensor
Engine coolant
temperature sensor
Camshaft position sensor
Crank angle sensor
Detonation sensor
Ignition switch-ST
Engine-ECU
or Engine-
CVT-ECU
AG
OTHER CONTROL FUNCTI O NS
M21320100 0059 6
The following co ntrols are b a sically t he sa me a s
those
of the 4G1 - No n
−turbo eng ine u s ed in the
CO
L
T
.
•ENGINE CONTROL RELA Y CONTROL
•THROTTLE VA L V E C O NTROL SER VO R E LA Y
CONTROL
•MIVEC (Mitsub i sh i Inno vative V a lve T i ming Elec-
tronic Con t rol System)
•FUEL PUMP RELA Y CONTROL
•OXYGEN S E NSOR HEA T E R CONTR O L
•A/C RELAY CONTROL
•ALTER N A T OR CONTROL