Mitsubishi Eclipse. Manual — part 748
23A-1
CONTENTS
GENERAL DESCRIPTION. . . . . . . . .
AUTOMATIC TRANSAXLE
DIAGNOSIS . . . . . . . . . . . . . . . . . . . .
DIAGNOSTIC TROUBLESHOOTING
FLOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION TO A/T DIAGNOSIS . . . .
A/T DIAGNOSTIC TROUBLESHOOTING
STRATEGY. . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSTIC FUNCTION . . . . . . . . . . . . .
FAIL-SAFE/BACKUP FUNCTION. . . . . . . .
ROAD TEST . . . . . . . . . . . . . . . . . . . . . . . .
TORQUE CONVERTER STALL TEST . . . .
HYDRAULIC PRESSURE TESTS . . . . . . .
HYDRAULIC CIRCUIT . . . . . . . . . . . . . . . .
LINE PRESSURE ADJUSTMENT . . . . . . .
DIAGNOSTIC TROUBLE CODE CHART . .
SYMPTOM CHART. . . . . . . . . . . . . . . . . . .
DIAGNOSTIC TROUBLE CODE
PROCEDURES. . . . . . . . . . . . . . . . . . . . . .
SYMPTOM PROCEDURES . . . . . . . . . . . .
DATA LIST REFERENCE TABLE . . . . . . . .
ACTUATOR TEST REFERENCE TABLE . .
INVECS-II CANCEL COMMAND. . . . . . . . .
PCM TERMINAL VOLTAGE REFERENCE
CHART FOR TRANSAXLE OPERATION . .
PCM TERMINAL RESISTANCE AND
CONTINUITY INSPECTION CHART . . . . .
INSPECTION PROCEDURE USING AN
OSCILLOSCOPE . . . . . . . . . . . . . . . . . . . .
A/T FAULTY OPERATION PREVENTION
MECHANISM DIAGNOSIS . . . . . . . . .
INTRODUCTION TO A/T KEY INTERLOCK
AND SHIFT LOCK MECHANISMS . . . . . . .
A/T KEY INTERLOCK AND SHIFT LOCK
MECHANISMS DIAGNOSTIC
TROUBLESHOOTING STRATEGY . . . . . .
SYMPTOM CHART . . . . . . . . . . . . . . . . . . .
SYMPTOM PROCEDURES . . . . . . . . . . . .
Continued on next page
WARNINGS REGARDING SERVICING OF SUPPLEMENTAL RESTRAINT SYSTEM (SRS) EQUIPPED VEHICLES
WARNING
•
Improper service or maintenance of any component of the SRS, or any SRS-related component, can lead to
personal injury or death to service personnel (from inadvertent firing of the air bag) or to the driver and
passenger (from rendering the SRS inoperative).
•
Service or maintenance of any SRS component or SRS-related component must be performed only at an
authorized MITSUBISHI dealer.
•
MITSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP 52B - Supplemental
Restraint System (SRS) before beginning any service or maintenance of any component of the SRS or any
SRS-related component.
NOTE
The SRS includes the following components: SRS air bag control unit, SRS warning light, front impact sensors, air bag module,
clock spring, and interconnecting wiring. Other SRS-related components (that may have to be removed/installed in connection
with SRS service or maintenance) are indicated in the table of contents by an asterisk (*).
23A-2
SPECIAL TOOLS. . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE. . . . . . . . . . .
A/T CONTROL COMPONENT LAYOUT . .
ESSENTIAL SERVICE . . . . . . . . . . . . . . . .
TRANSMISSION FLUID CHECK . . . . . . . .
TRANSMISSION FLUID CHANGE . . . . . . .
FLUSHING COOLERS AND TUBES . . . . .
OIL COOLER FLOW CHECK . . . . . . . . . . .
TP SENSOR ADJUSTMENT . . . . . . . . . . .
TRANSMISSION RANGE SWITCH
CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRANSMISSION RANGE SWITCH AND
CONTROL CABLE ADJUSTMENT. . . . . . .
AUTOMATIC TRANSAXLE CONTROL
COMPONENT CHECK . . . . . . . . . . . . . . . .
CRANKSHAFT POSITION SENSOR
CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TP SENSOR CHECK . . . . . . . . . . . . . . . . .
TRANSMISSION FLUID TEMPERATURE
SENSOR CHECK . . . . . . . . . . . . . . . . . . . .
TRANSMISSION RANGE SWITCH
CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STOPLIGHT SWITCH CHECK . . . . . . . . . .
PRESSURE SWITCH CHECK . . . . . . . . . .
SELECT SWITCH CHECK . . . . . . . . . . . . .
SHIFT SWITCH (UP) CHECK. . . . . . . . . . .
SHIFT SWITCH (DOWN) CHECK. . . . . . . .
A/T CONTROL RELAY CHECK . . . . . . . . .
SOLENOID VALVE CHECK . . . . . . . . . . . .
SELECTOR LEVER OPERATION CHECK.
KEY INTERLOCK MECHANISM CHECK . .
SHIFT LOCK MECHANISM CHECK . . . . . .
TRANSAXLE CONTROL . . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . .
DISASSEMBLY AND ASSEMBLY . . . . . . .
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . .
A/T KEY INTERLOCK AND SHIFT
LOCK MECHANISMS. . . . . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
INSPECTION. . . . . . . . . . . . . . . . . . . . . . . .
TRANSAXLE ASSEMBLY . . . . . . . . .
REMOVAL AND INSTALLATION . . . . . . . .
SPECIFICATIONS . . . . . . . . . . . . . . .
FASTENER TIGHTENING
SPECIFICATIONS. . . . . . . . . . . . . . . . . . . .
SERVICE SPECIFICATIONS . . . . . . . . . . .
GENERAL DESCRIPTION
TSB Revision
AUTOMATIC TRANSAXLE
23A-3
GENERAL DESCRIPTION
M1231000100333
The A/T come in two models, namely, F4A42 and F4A51.
ITEM
SPECIFICATION
Transaxle model
F4A42-2-JZB7
F4A51-2-FZB2
F4A51-2-LZP
Engine model
4G64 (2.4L Engine)
6G72 (3.0L Engine)
<Vehicles without
variable induction
system>
6G72 (3.0L Engine)
<Vehicles with
variable induction
system>
Torque
converter
Type
3-element, 1-stage, 2-phase
Torque converter clutch
Provided (3rd to 4th)
Stall torque ratio
1.85
2.04
2.04
Transaxle type
4-speed forward, 1-speed reverse fully automatic
Gear ratio
1st
2.842
2.842
2.666
2nd
1.529
1.495
1.448
3rd
1.000
1.000
1.000
4th
0.712
0.731
0.731
Reverse
2.480
2.720
2.720
Final gear ratio (Differential gear ratio) 4.042
3.728
4.011
Number of underdrive clutch discs
4
Number of overdrive clutch discs
4
Number of reverse clutch discs
2
Number of low-reverse brake discs
6
Number of second brake discs
3
4
4
Manual control type
P-R-N-D-3-2-L (7
positions) or P-R-N-D
(4 positions) + sport
mode (up, down)
P-R-N-D (4 positions) + sport mode (up,
down)
Shift pattern control
Electronic control (INVECS-II)
Oil pressure control during shifting
Electronic control (each oil pressure independently controlled)
Torque converter clutch control
Electronic control
GENERAL DESCRIPTION
TSB Revision
AUTOMATIC TRANSAXLE
23A-4
TRANSAXLE
The transaxle is made up of the torque converter and gear train. A 3-element, 1-step, 2-phase torque con-
verter with built-in torque converter clutch is used. The gear train is made up of three sets of multi-plate
clutches, two sets of multi-plate brakes, one set of one-way clutches and two sets of planetary gears. The
planetary gears are made up of sun gears, carriers, pinion gears and annulus gears.
.
TRANSAXLE CONFIGURATION DRAWING
.
COMPONENTS AND FUNCTIONS
AC001813
OD
REV
2ND LR
OWC
UD
AB
COMPONENT
FUNCTION
Underdrive clutch
UD
connects the input shaft to the underdrive sun gear.
Reverse clutch
REV
connects the input shaft to the reverse sun gear.
Overdrive clutch
OD
connects the input shaft to the overdrive planetary carrier.
Low-reverse brake
LR
holds the low-reverse annulus gear and the overdrive planetary carrier.
Second brake
2ND
holds the reverse sun gear.
One-way clutch
OWC
restricts the rotation direction of the low-reverse annulus gear.
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