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Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual - part 438

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-43

FAIL-SAFE (IN CASE OF FAIL-SAFE VALVE B OPERATION)

: LINE PRESSURE

: OIL PUMP SUCTION PRESSURE

: TORQUE CONVERTER CLUTCH
PRESSURE

: TORQUE CONVERTER AND LUBRICATION
PRESSURE

: TORQUE CONVERTER CLUTCH SOLENOID
VALVE PRESSURE

R N

D
3
2
L

    1.  REVERSE CLUTCH
    2.  LOW-REVERSE BRAKE
    3.  SECOND BRAKE
    4.  UNDERDRIVE CLUTCH
    5.  OVERDRIVE CLUTCH
    6.  ACCUMULATOR
    7.  CHECK BALL
    8.  TORQUE CONVERTER CLUTCH
    9.  FAIL SAFE VALVE A
    10.  FAIL SAFE VALVE B
    11.  TORQUE CONVERTER CLUTCH CONTROL

VALVE

    12.  SWITCH VALVE
    13.  A/T FLUID COOLER
    14.  LUBRICATION
    15.  LOW-REVERSE PRESSURE CONTROL VALVE
    16.  SECOND PRESSURE CONTROL VALVE

    17.  UNDERDRIVE PRESSURE CONTROL VALVE
    18.  OVERDRIVE PRESSURE CONTROL VALVE
    19.  TORQUE CONVERTER CLUTCH SOLENOID

VALVE

    20.  LOW-REVERSE SOLENOID VALVE
    21.  SECOND SOLENOID VALVE
    22.  UNDERDRIVE SOLENOID VALVE
    23.  OVERDRIVE SOLENOID VALVE
    24.  TORQUE CONVERTER PRESSURE CON-

TROL VALVE

    25.  REGULATOR VALVE
    26.  MANUAL VALVE
    27.  OIL FILTER
    28.  OIL PUMP
    29.  OIL STRAINER
    30.  RELIEF VALVE
    31.  OIL PAN

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-44

LINE PRESSURE ADJUSTMENT

M1231001700048

1. Drain the A/T fluid.

NOTE: Be sure to perform the hydraulic pressure test before
attempting any adjustments.

2. Remove the valve body cover.

3. Turn the adjusting screw shown in the illustration to adjust

the line pressure to the standard value. The pressure
increases when the screw is turned to the left.

NOTE: When adjusting the line pressure, adjust to the
middle of the standard value range.

Standard value: 1,010 - 1,050 kPa (147 - 152 psi)

4. Install the valve body cover. Pour in one quart A/T fluid.

5. Repeat the hydraulic pressure test. (Refer to

P.23A-30

Readjust the line pressure if necessary.

DIAGNOSTIC TROUBLE CODE CHART

M1231007900039

AC001830

ADJUSTING
SCREW

CODE

DIAGNOSIS ITEM

REFERENCE
PAGE

Throttle position sensor system

Short circuit

P.23A-47

Open circuit

P.23A-57

Sensor out of adjustment

P.23A-65

A/T fluid temperature sensor system

Open circuit

P.23A-75

Short circuit

P.23A-82

Crankshaft position sensor system

Open circuit

P.23A-87

Input shaft speed sensor system

Short circuit/open circuit

P.23A-103

Output shaft speed sensor system

Short circuit/open circuit

P.23A-115

Stoplight switch system

Short circuit

P.23A-128

Park/Neutral position switch system

Open circuit

P.23A-135

Short circuit

P.23A-163

Vehicle speed sensor system

Short circuit/open circuit

P.23A-179

Low-reverse solenoid valve system

Short circuit/open circuit

P.23A-185

Underdrive solenoid valve system

Short circuit/open circuit

P.23A-193

Second solenoid valve system

Short circuit/open circuit

P.23A-200

Overdrive solenoid valve system

Short circuit/open circuit

P.23A-207

Torque converter clutch solenoid system

Short circuit/open circuit

P.23A-214

1st gear incorrect ratio

P.23A-221

2nd gear incorrect ratio

P.23A-221

3rd gear incorrect ratio

P.23A-221

4th gear incorrect ratio

P.23A-221

Reverse gear incorrect ratio

P.23A-221

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-45

SYMPTOM CHART

M1231008000040

Torque converter clutch solenoid system

Defective system

P.23A-230

Lock-up stuck on

P.23A-235

A/T control relay system

Short circuit to ground/open
circuit

P.23A-237

"N" range light system <Vehicles with sport
mode>

Open circuit

P.23A-247

CODE

DIAGNOSIS ITEM

REFERENCE
PAGE

SYMPTOMS

INSPECTION
PROCEDURE NO.

REFERENCE
PAGE

Communication with
scan tool is not
possible

Communication with
all systems is
impossible

2.4L Engine

Group 14A,
diagnosis

P.13A-

339

3.0L Engine

Group 14B,
diagnosis

P.13B-

411

Communication with
the PCM only is
impossible

2.4L Engine

Group 14A,
diagnosis

P.13A-

341

3.0L Engine

Group 14B,
diagnosis

P.13B-

413

Driving impossible

Vehicle does not move

P.23A-254

Does not move forward

P.23A-255

Does not move backward

P.23A-257

Does not move (forward or backward)

P.23A-260

Malfunction when
engaging

Engine stalls when moving selector lever
from "N" to "D" or "N" to "R"

P.23A-261

Shift shocks when shifting from "N" to "D"
and long delay

P.23A-263

Shift shocks when shifting from "N" to "R"
and long delay

P.23A-266

Shift shocks when shifting from "N" to "D"
or "N" to "R" and long delay

P.23A-269

Malfunction when
shifting

Shift shocks and slipping

P.23A-270

Does not shift
properly

Early or late shifting in all gears

P.23A-273

Early or late shifting in some gears

P.23A-275

Does not shift

No diagnostic trouble codes

P.23A-277

Malfunction while
driving

Poor acceleration

P.23A-280

Vibration

P.23A-282

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-46

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC 11: Throttle Position Sensor System (Short Circuit)

CIRCUIT OPERATION

•

When the throttle valve shaft rotates from the idle
position to the fully opened position, the

resistance between the TPS output terminal
(terminal 3) and ground terminal (terminal 1) will
increase according to the rotation.

Vehicle shifts differently with A/C engaged

P.23A-285

Transaxle won't downshift under load with auto-cruise engaged

P.23A-295

Shift switch assembly system <Vehicles with sport mode>

P.23A-300

SYMPTOMS

INSPECTION
PROCEDURE NO.

REFERENCE
PAGE

AC004681AC

Throttle Position Sensor System Circuit

AC001831AB

CONNECTOR: B-07

<2.4L ENGINE>

<3.0L ENGINE>

AC001657

CONNECTORS: C-54 <2.4L ENGINE> OR
C-55 <3.0L ENGINE>, C-57 <2.4L ENGINE>
OR C-59 <3.0L ENGINE>

C-54 <2.4L ENGINE>
OR
C-55 <3.0L ENGINE>

C-57 <2.4L ENGINE>
OR
C-59 <3.0L ENGINE>

PCM

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