Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual - part 430

GENERAL DESCRIPTION

TSB Revision

AUTOMATIC TRANSAXLE

23A-11

SYSTEM CONSTRUCTION DIAGRAM

Powertrain control module (PCM)

Ignition switch

Input shaft speed sensor

Output shaft speed sensor

Crankshaft position sensor

Throttle position sensor 

A/T fruid temperature sensor

Park/Neutral position switch

Vehicle speed sensor

Dual pressure switch

Stoplight switch

Cruise cntrol unit (OD OFF Signal)

Select switch
<Vehicles with sport mode>

Shift switch (up, sown)
<Vehicles with sport mode> 

Scan tool (MUT-II)

Serial communication

A/T control relay

Torque converter clutch solenoid valve

Low-reverse solenoid valve

Second solenoid valve

Underdrive solenoid valve

Overdrive solenoid valve

Fail-safe operation
("N" range light flashing)
<Vehicles with sport mode>

Diagnosis trouble code output
("N" range light flashing)
<Vehicles with sport mode>

SENSE

DECIDE

ACT

AC001936 AB

GENERAL DESCRIPTION

TSB Revision

AUTOMATIC TRANSAXLE

23A-12

SHIFT PATTERN CONTROL

<2.4L ENGINE> UPSHIFT PATTERN

<2.4L ENGINE> DOWNSHIFT PATTERN

AC001949AC

100

50

0

1,000

2,000

3,000

4,000

5,000

6,000

7,000

1

2

2

3

3

4

THROTTLE
OPENING (%)

2 

→ 

3

MOVEMENT
RANGE

3

→

4

MOVEMENT
RANGE

0 (0)

50 (31)

100 (62)

150 (93)

200 (124)

OUTPUT SHAFT SPEED (r/min)

VEHICLE SPEED [km/h (mph)]

THICK LINE: STANDARD SHIFT PATTERN 

AC001950

100

50

0

0(0)

1,000

2,000

3,000

4,000

5,000

6,000

7,000

50 (31)

100 (62)

150 (93)

200 (124)

1

2

2

3

3

4

1

2 (L OR
   SPORT MODE)

2

3 (2,L OR
   SPORT MODE)

3

4 (3,2,L OR
   SPORT
   MODE)

THROTTLE
OPENING (%)

OUTPUT SHAFT SPEED (r/min)

VEHICLE SPEED [km/h (mph)]

AD

GENERAL DESCRIPTION

TSB Revision

AUTOMATIC TRANSAXLE

23A-13

<3.0L ENGINE> UPSHIFT PATTERN 

<3.0L ENGINE> DOWNSHIFT PATTERN 

AC001951

100

50

0

1,000

2,000

3,000

4,000

5,000

6,000

7,000

0 (0)

50 (31)

100 (62)

150 (93)

200 (124)

THROTTLE 
OPENING (%)

OUTPUT SHAFT SPEED (r/min)

VEHICLE SPEED [km/h (mph)]

1

2

2

3

3

4

2

→

3

MOVEMENT
RANGE

3

→

4

MOVEMENT
RANGE

THICK LINE: STANDARD SHIFT PATTERN

AB

AC001952

100

50

0

1,000

2,000

3,000

4,000

5,000

6,000

7,000

0 (0)

50 (31)

100 (62)

150 (93)

200 (124)

1

2

2

3

3

4

1

2 (L OR
   SPORT MODE)

2

3 (2,L OR
   SPORT MODE)

3

4

THROTTLE
OPENING (%)

OUTPUT SHAFT SPEED (r/min)

VEHICLE SPEED [km/h (mph)]

AB

(3,2,L OR
SPORT MODE)

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-14

AU TO M ATIC  TR A N SA XLE DIAG NO SIS

DIAGNOSTIC TROUBLESHOOTING FLOW

M1231013500030

INTRODUCTION TO A/T DIAGNOSIS

M1231012300055

The mounting could be incorrect, the A/T fluid may 
be low, or a component of the transaxle may be 
faulty in the following conditions: noise or vibration is 
generated, A/T fluid leaks, the vehicle does not move 
forward or backward.

The following items are suspected as causes for the 
INVECS-II troubles: malfunctions of the PCM, the 
sensors, the switches, the harness or connectors.

A/T DIAGNOSTIC TROUBLESHOOTING STRATEGY

M1231007600083

Use these steps to plan your diagnostic strategy. If 
you follow them carefully, you will be sure that you 
have exhausted most of the possible ways to find an 

A/T fault.

 

Gather information from customer.

Check the automatic transmission
fluid.

Verify complaint.

Replace or replenish the automatic
transmission fluid.

Communication with the scan tool
(MUT-II) not possible in Symptom 
Chart.

Read the diagnostic trouble code.

Erase the diagnostic trouble code.

Check trouble symptom.

Performing the essential service.

Road test

Recheck diagnostic trouble codes 
which were read before road test.

To DIAGNOSTIC TROUBLE CODE 
CHART

To SYMPTOM CHART

Search for cause.

Repair

Confirmation test (road test)

INTERMITTENT MALFUNCTIONS
(Refer to GROUP 00, How to Use
Troubleshooting/Inspection 
Service Points.)

Completed

NG

OK

Communication with the scan
tool (MUT-II) not possible

Diagnostic trouble code
displayed.

No diagnostic trouble code
displayed.

Abnormality exists (no diagnostic 
trouble code)

Abnormality exists 
(diagnostic trouble 
code present)

No abnormality

No diagnostic trouble code
displayed.

Diagnostic trouble code
displayed.

Found

Not found

NG

OK

OK

NG

AC005120AB