2006 MITSUBISHI COLT Service Repair Manual

CONSTRUCTION DESCRIPTION
BASIC BRAKE SYSTEM35A-5
CONSTRUCTION DESCRIPTION
MASTER CYLINDERM2350001000509
AC505737ABMaster cylinder
Reserve tank
Primary piston
Secondary piston
The master
cylind e r is a t andem-typ e, with a stru c-
ture that emp hasizes sa fety .
BRAKE BOOSTER
M23500020 0063 2
AC505736AB
Reaction disc
Booster return spring Push rod
Diaphragm
Operating rod
9-inch brake booste r has been inst alled. T he brake
booster employs a
variable amplification ratio mech
-
anism that va ries amplifications ratios so that e v en
sma
ll p edal force can provide gre a t brea kin g force.

CONSTRUCTION DESCRIPTION
BASIC BRAKE SYSTEM35A-6
BRAKE PEDAL
M2350007000154
AC207749
AC207292
AC207291AE
Fixed bolt
Stopper plate
Brake booster
Collision load Before collision
After collision
Reinforced bracket
Deck crossmember
Retreat locus of brake pedal during collision
Brake pedal position before collision Brake pedal position after collision
(Conventional)
Brake pedal position after collision
(Brake pedal rearward displacement preventio
nmechanism operated)
Reinforced bracket
The bra
k e pe dal re arward displacement preve n tion
mechanism
has been adop ted in ord e r to reduce the
driver
’ s le g and foot injury during fron t a l co llisio n .The brak e bo oste r is force d to move backward
accordin
g to ret r eatin g engine bo dy d u ring front al
collision a
nd the n the r e info rced b r acket is release d
from
the stopper plat e. Af ter release d , the reinf o rced
bracket is forced to
move backward and do wn wa rd
by gu
iding the rear end of the reinf o rced bracket
along
the stoppe r plate slo pe and it preve n t the back
-
ward and upward displace ment of the b r ake pedal.

CONSTRUCTION DESCRIPTION
BASIC BRAKE SYSTEM35A-7
FRONT BRAKE
M2350003000538
AC403189AE
14-inch disc brake

15-inch disc brake
Pad
Brake disk
Wear indicator When new When worn
Conventional structure
Caliper support
bracket Knuckle
•Ventilate d disc b r ake (V4−S51 or V5−S54) is
in
st
alled.
•The callipe r sup port bra c ket int egrated with the
kn
uckle h a s be en in st alled, achie v in g weigh t
redu
ction and optimising it for b r ake perform
-
ance.
•Audible wear indicat o r that informs th e driver of
wear limit is inst
alle d to th e inn e r brake p ad.
(Only lef
t side)
DISC BRAKE DESIGNA T ION
S 4 - S 30 P
1 2 3 4 5
AC403539
No.ItemContent
1Brake disc typeV: Ventilated
2Brake size
(Minimum applicable
disc wheel)4: 14-inch
5: 15-inch
3No. of pistonS: 1piston (floating type)
4Piston size (rounded
to nearest integer)30: φ 30 mm
34: φ 34 mm
51: φ 51 mm
54: φ 54 mm
5Parking brake
mechanismP: Set

CONSTRUCTION DESCRIPTION
BASIC BRAKE SYSTEM35A-8
REAR BRAKE
M2350004000531
AC403060AD
<8-inch leading trailing type drum brake> <14-inch disc brake>
•8-inch leading tra iling type drum brake, which
assure
s st ab le bra k in g force during forward or
rearward
movement, ha s bee n inst alle d. VR>
•Disc brake (S4 - S3 0 P ) ha s be en in st a l le d. RALLIAR
T V e rsion - R>
•An audible wear indicator th at in forms the d r ive r
of a
pplication limit has been inst a lled to the lef t
brake p
ad.
NOTE: For d i sc brake de sign ation , refer t o P.35A-7.

GROUP 23
CONTINUOUSLY VARIABLE
TRANSMISSION (CVT)
CONTENTS
CVT. . . . . . . . . . . . . . . . . . . . . . . . . . .23-2
GENERAL INFORMATION . . . . . . . . . . . . . 23-2
ELECTRONIC CONTROL SYSTEM. . . . . . 23-3
EEPROM. . . . . . . . . . . . . . . . . . . . . . . . . . . 23-3
CONTROLLER AREA NETWORK (CAN)
COMMUNICATION . . . . . . . . . . . . . . . . . . . 23-3
RATIO PATTERN . . . . . . . . . . . . . . . . . . . . 23-3
DIAGNOSIS CLASSIFICA TION TABLE . . . 23-4
ATF WARMER (ATF COOLER) . . . . . . . . . 23-5
TRANSMISSION CONTROL . . . . . . .23-6
GENERAL INFORMATION . . . . . . . . . . . . . 23-6
SELECTOR LEVER ASSEMBLY . . . . . . . . 23-7
CVT ERRONEOUS OPERATION
PREVENTION MECHANISMS . . . . . . . . . . 23-8

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

CVT
CONTINUOUSLY VARIABLE TRANSMISSION (CVT)23-3
ELECTRONIC CONTROL SYSTEM
EEPROM
M2231012000024
Because EEPROM has been used, even if the bat-
tery terminals or control unit connectors are discon-
nected, the necessary learned values are stored in
the engine-CVT-ECU to prevent a loss of shift qual
-
ity. (Initialisation is available by M.U.T.-III).
CONTROLLER AREA NETWORK (CAN)
COMMUNICATION
M2231017000018
CAN* communication has been adopted for commu-
nication with other ECUs in order to decrease the
number of wires and ensure information transmis
-
sion. For CVT control, the engine-CVT-ECU receives
the following signals.
CAN COMMUNICATION INPUT SIGNAL TABLE
Input signalTransmitter ECU
Average vehicle speed signal from drive wheelsABS-ECU
Motor current signalEPS-ECU
EPS warning lamp illumination request signal
Compressor signalMeter and A/C-ECU
NOTE: *: For more information about CAN (Control-
ler Area Network), refer to GROUP 54C P.54C-2.
RATIO PATTERN
M2231013000061
AC403740
AE
Engine speed
(r/min)
Vehicle speed (km/h)
0
100 150
50
1,000 2,000 4,000
3,000 5,000
7,000
6,000
OD
LOW
Accelerator
fully closed, 20% 40%
Accelerator
fully open
60%80%

CVT
CONTINUOUSLY VARIABLE TRANSMISSION (CVT)23-4
DIAGNOSIS CLASSIFICATION TABLE
M2231015000056
ItemDiagnosisData listActuator
test
Code No.Trouble symptomsItem No.Display
Crank angle sensor−−01r/min−
CVT fluid temperature sensor15Open circuit08°C−
16Short circuit
Line pressure sensor18Open circuit09MPa−
19Short circuit
Turbine speed sensor22Open circuit02r/min−
Primary speed sensor23Open circuit03r/min−
26System failure
Secondary speed sensor24Open circuit04r/min−
25System failure
Accelerator pedal position sensor (APS)−−06mV−
Primary pressure sensor27Open circuit11MPa−
28Short circuit
Gear ratio−−12Displays the
gear ratio.−
Line pressure control solenoid valve31Open circuit/short
circuit 16%01
Shift control solenoid valve32Open circuit15%02
36Short circuit
Damper clutch control solenoid valve33Open circuit14%03
37Short circuit
Clutch pressure control solenoid valve34Open circuit17%04
38Short circuit
Shift system42System failure−−−
Damper clutch system44System failure10r/min−
45
Clutch system46System failure−−−
48
Inhibitor switch51Open circuit26P/R/N/D/Ds/L−
52Short circuit
Stop lamp switch53Open circuit33ON/OFF−
54Short circuit
Battery voltage−−24V−
CVT control relay56Open circuit25V11
Steel belt system59System failure−−−
Line pressure system57System failure−−−
71
72