4A91 MITSUBISHI COLT 2006 Service Repair Manual

GENERAL INFORMATION
ENGINE MECHANICAL <4A9>11A-2
GENERAL INFORMATION
M2112000100697
The newly developed 1.5L 4A91 engine features
4-cylinder, 16-valve, and double overhead camshafts
(DOHC).
The engine has the following features.
•Aluminum cylinder block
•MIVEC (Mitsubishi Innovative Valve timing Elec-
tronic Control system)
•Selective valve tappet of direct acting valve sys-
tem for valve clearance adjustment
•Timing chain
MAJOR SPECIFICATIONS
Item4A91
Total displacement mL1,499
Bore × Stro ke mm75 × 84.8
Compression ratio10.0
Compression chamberPentroof-type
Va l v e t i m i n gIntake openingBTDC 31° − AT D C 1 9°
Intake closingABDC 21° − ABDC 71°
Exhaust openingBBDC 39°
Exhaust closingATDC 5°
Maximum output kW (PS)/rpm77 (104)/6,000
Maximum torque N⋅m (kg⋅m)/rpm141 (14.4)/4,000
Fuel systemElectronically controlled multipoint fuel injection
Ignition systemElectronic-controlled 4-coil

GENERAL INFORMATION
ENGINE MECHANICAL <4A9>11A-18
GENERAL INFORMATION
M2112000101009
The newly developed 1.5L 4A91 engine features
4-cylinder, 16-valve, and double overhead camshafts
(DOHC).
The engine has the following features.
•Aluminum cylinder block
•MIVEC (Mitsubishi Innovative Valve timing Elec-
tronic Control system)
•Selective valve tappet of direct acting valve sys-
tem for valve clearance adjustment
•Timing chain
MAJOR SPECIFICATIONS
Item4A91
Total displacement mL1,499
Bore × Stro ke mm75 × 84.8
Compression ratio10.0
Compression chamberPentroof-type
Va l v e t i m i n gIntake openingBTDC 31° − AT D C 1 9°
Intake closingABDC 21° − ABDC 71°
Exhaust openingBBDC 39°
Exhaust closingATDC 5°
Maximum output kW (PS)/rpm77 (104)/6,000
Maximum torque N⋅m (kg⋅m)/rpm141 (14.4)/4,000
Fuel systemElectronically controlled multipoint fuel injection
Ignition systemElectronic-controlled 4-coil

TECHNICAL FEATURES
GENERAL00-9
ENGINE
M2000020000579
<4A9>
The newly-developed 4A9 engine has been installed
to realise small-size, light-weight, high-performance,
and better fuel economy with the state-of-the-art
technologies such as the aluminium die-cast cylinder
block, direct attack driven-type DOHC MIVEC, timing
chain-type cam drive, and rear exhaust.
MAJOR SPECIFICATIONS
Item4A91
Total displacement mL1,499
Bore × Stro ke mm75 × 84.8
Compression ratio10.0
Compression chamberPentroof-type
Va l v e t i m i n gIntake openingBTDC 31° − ATDC 19°
Intake closingABDC 21° − ABDC 71°
Exhaust openingBBDC 39°
Exhaust closingATDC 5°
Maximum output kW (PS)/rpm77 (105)/6,000
Maximum torque N⋅m (kg⋅m)/rpm141 (14.4)/4,000
Fuel systemElectronically controlled multipoint fuel injection
Ignition systemElectronic-controlled 4-coil
<4G1>
Based on the 4G1 engine fitted on the existing COLT,
the power performance leading the compact car field
has been secured by Turbocharger.
MAJOR SPECIFICATIONS
Item4G15 (with Intercooler Turbocharger)
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° − ATDC 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

TECHNICAL FEATURES
GENERAL00-10
TRANSMISSION
M2000021000594
MANUAL TRANSMISSION
Due to the addition of vehicles with M/T, a
"GETRAG" F5MGA type <4A9 engine>, F5MGB
type<4G1 engine> transmission has been adopted.
SPECIFICATIONS
Transmission modelF5MGAF5MGB
Engine model4A914G15
Transmission type5-speed, floor-shift
Transmission gear ratio1st3.3083.538
2nd1.9131.913
3rd1.2581.344
4th0.9431.027
5th0.7630.833
Reverse3.2313.357
Final reduction ratio4.1583.737
GEARSHIFT CONTROL
AC600701
Gearshift knob
AB
Select cable
Gearshift lever assembly
Gearshift cable or
Select cable assembly
Gearshift cable
The cable type of gea r shift contro l is adop ted.

TECHNICAL FEATURES
GENERAL00-11
CVT
The F1C1A transmission is adopted for the CVT.
This transmission is basically the same as conven
-
tional transmission.
The ATF warmer (ATF cooler) is adopted.
SPECIFICATIONS
ItemSpecification
Transmission modelF1C1A
Engine model4A91
Torque converterTy p e3-element, 1-stage, 2-phase type
Lock-upProvided
Stall torque ratio2.0
Transmission typeForward automatic continuously variable (steel belt type),
1st in reverse
Gear ratioForward2.319 − 0.445
Reverse2.588
ClutchA pair of multi-plate system
BrakeA pair of multi-plate system
Manual control systemP-R-N-D-Ds-L (smart shift)
FunctionVariable speed controlYe s
Line pressure controlYe s
Direct engagement controlYe s
N-D/N-R controlYe s
Shift pattern controlYe s
Self-diagnosisYe s
FailsafeYe s
Oil pumpTy p eExternal gear pump
ConfigurationBuilt-in (chain drive)
Control methodElectronic control (INVECS-III)

VEHICLE IDENTIFICATION
GENERAL00-30
VEHICLE IDENTIFICATION
M2000001002264
MODELS
Model codePrice classEngine modelTransmission modelFuel supply
system
Z23AXNMHR8LS4A91 DOHC MIVEC
(1,499 mL)F5MGA (5-speed M/T, floor
shift) MPI
XNXHR8VR-X
XSMHR8LSF1C1A (INVECS-III CVT,
smart shift)
XSXHR8VR-X
Z27AXNGFR8RALLIART
Version-R4G15 DOHC MIVEC with
Intercooler Turbocharger
(1,468 mL ) F5MGB (5-speed M/T, floor
shift)
MODEL CODE
AC601074
1 23456789
AB
No.ItemConten t
1Develop mentZ2MITSUB ISHI COL T
2Engine type31, 499 mL petro l engine
(4A91)
71, 468 mL petro l engine
(4G15)
3SortAPassenger car
4Body styleX4-door hatchback
5Transmission
typeNFloor shift M/T
SSmart shift CVT
6Trim levelGRALLIART Version-R
MLS
XVR-X
7Specification
engine featureFDOHC-MPI-MIVEC with
Intercooler Turbocharger
HDOHC-MPI-MIVEC
8Steering wheel
locationRRight hand drive
9Destination8For Australia and New
Zealand
No. Item Content

MAJOR SPECIFICATIONS
GENERAL00-31
MAJOR SPECIFICATIONS
M2000030000837
AC401657AB
1
2 34
658
97
ItemZ23A
XSMHR8XSXHR8
LSVR-X
Vehicle dimensions mmFront track11,460
Overall width21,680
Front overhang3790
Wheel base42,500
Rear overhang5595
Overall length63,885
Ground clearance
(unladen)7150
Overall height (unladen)81,550
Rear track91,445
Vehicle weight kgKerb weight1,0501,065
Max. gross vehicle weight1,490
Max. axle weight rating-front810
Max. axle weight rating-rear700
Seating capacity5
EngineModel code4A91
Total displacement mL1,499
TransmissionModel codeF1C1A
Ty p eSmart shift CVT
Fuel systemFuel supply systemMPI

MAJOR SPECIFICATIONS
GENERAL00-32

M2000030000848
AC401657AB
1
2 34
658
97
ItemZ23AZ27A
XNMHR8XNXHR8XNGFR8
LSVR-XRALLIART Version-R
Vehicle dimensions
mmFront track11,4601,465
Overall width21,6801,695
Front overhang3790815
Wheel base42,500
Rear overhang5595610
Overall length63,8853,925
Ground clearance
(unladen)7150
Overall height (unladen)81,550
Rear track91,4451,450
Vehicle weight kgKerb weight1,0201,0351,130
Max. gross vehicle weight1,4601,470
Max. axle weight rating-front780850
Max. axle weight rating-rear700640
Seating capacity54
EngineModel code4A914G15 (with intercooler,
turbocharger)
Total displacement mL1,4991,468
TransmissionModel codeF5MGAF5MGB
Ty p eFloor shift M/T
Fuel systemFuel supply systemMPI

COMMUNICATION METHOD
SMART WIRING SYSTEM (SWS)54B-3
COMMUNICATION METHOD
M2541001000527
AC206910
Engine-ECU or
Engine-CVT-ECU EPS-ECU
ABS-ECU*
1 or
ASC-ECU*2
ETACS-ECU
Combination meter
(incorporating meter-A/C-ECU)
AC
SWS
communication
Column switch
CAN
communication
: Bidirectional communication : Unidirectional communication
NOTE: 4A91
: 4G15
The following th ree type s of co mmunicatio n systems
are co
nnected as sh own for mutual commu n ication .
•SWS communicatio n system in wh ich a ded i-
cated signa l line for send ing mult iple x da t a con-
nects ET ACS-ECU and the column swit ch (in the
co
lum n ECU)
•CAN communication system in which twisted-p a ir
cables with h
i gh resist ance to noise conn ect
ET
ACS-ECU, engine-ECU ,
engine-CVT
- ECU , ABS -E CU <4A9>,
ASC-ECU <4G1>, EPS-ECU,
and the combina
-
tion meter (in the meter-A/C-ECU)
NOTE: For informatio n on CAN, refe r to GROUP
54C
P.54C-2.

CVT
CONTINUOUSLY VARIABLE TRANSMISSION (CVT)23-2
CVT
GENERAL INFORMATIONM2231000100165
The F1C1A transmission is adopted for the CVT.
This transmission is basically the same as conven
-
tional transmission.
The ATF warmer (ATF cooler) is adopted.
SPECIFICATIONS
ItemSpecification
Transmission modelF1C1A
Engine model4A91
Torque converterTy p e3-element, 1-stage, 2-phase type
Lock-upProvided
Stall torque ratio2.0
Transmission typeForward automatic continuously variable (steel belt type),
1st in reverse
Gear ratioForward2.319 − 0.445
Reverse2.588
ClutchA pair of multi-plate system
BrakeA pair of multi-plate system
Manual control systemP-R-N-D-Ds-L (smart shift)
FunctionVariable speed controlYe s
Line pressure controlYe s
Direct engagement controlYe s
N-D/N-R controlYe s
Shift pattern controlYe s
Self-diagnosisYe s
FailsafeYe s
Oil pumpTy p eExternal gear pump
ConfigurationBuilt-in (chain drive)
Control methodElectronic control (INVECS-III)
Transmission oilSpecified lubricantsDIA QUEEN ATF SP III
Quantity L8.1