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

1

2

3

4

5

6

6

6

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

R N

P

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

AB

CODE

DIAGNOSIS ITEM

REFERENCE
PAGE

11

Throttle position sensor system

Short circuit

P.23A-47

12

Open circuit

P.23A-57

14

Sensor out of adjustment

P.23A-65

15

A/T fluid temperature sensor system

Open circuit

P.23A-75

16

Short circuit

P.23A-82

21

Crankshaft position sensor system

Open circuit

P.23A-87

22

Input shaft speed sensor system

Short circuit/open circuit

P.23A-103

23

Output shaft speed sensor system

Short circuit/open circuit

P.23A-115

26

Stoplight switch system

Short circuit

P.23A-128

27

Park/Neutral position switch system

Open circuit

P.23A-135

28

Short circuit

P.23A-163

29

Vehicle speed sensor system

Short circuit/open circuit

P.23A-179

31

Low-reverse solenoid valve system

Short circuit/open circuit

P.23A-185

32

Underdrive solenoid valve system

Short circuit/open circuit

P.23A-193

33

Second solenoid valve system

Short circuit/open circuit

P.23A-200

34

Overdrive solenoid valve system

Short circuit/open circuit

P.23A-207

36

Torque converter clutch solenoid system

Short circuit/open circuit

P.23A-214

41

1st gear incorrect ratio

P.23A-221

42

2nd gear incorrect ratio

P.23A-221

43

3rd gear incorrect ratio

P.23A-221

44

4th gear incorrect ratio

P.23A-221

46

Reverse gear incorrect ratio

P.23A-221

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-45

SYMPTOM CHART

M1231008000040

52

Torque converter clutch solenoid system

Defective system

P.23A-230

53

Lock-up stuck on

P.23A-235

54

A/T control relay system

Short circuit to ground/open
circuit

P.23A-237

56

"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

1

P.23A-254

Does not move forward

2

P.23A-255

Does not move backward

3

P.23A-257

Does not move (forward or backward)

4

P.23A-260

Malfunction when
engaging

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

5

P.23A-261

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

6

P.23A-263

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

7

P.23A-266

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

8

P.23A-269

Malfunction when
shifting

Shift shocks and slipping

9

P.23A-270

Does not shift
properly

Early or late shifting in all gears

10

P.23A-273

Early or late shifting in some gears

11

P.23A-275

Does not shift

No diagnostic trouble codes

12

P.23A-277

Malfunction while
driving

Poor acceleration

13

P.23A-280

Vibration

14

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

15

P.23A-285

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

16

P.23A-295

Shift switch assembly system <Vehicles with sport mode>

17

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>

AJ

PCM