Mitsubishi Eclipse. Manual - part 811

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-253

STEP 10. Check the harness for an open circuit or short 
circuit to ground between A/T control relay connector 
A-17X terminal 4 in the engine component relay box and 
A/T control solenoid valve assembly connector B-40 
terminal 10.
Q: Is the harness wires in good condition?

YES : Go to Step 11.
NO :  Repair or replace the harness wire.

STEP 11. Check A/T control solenoid valve assembly 
connector B-40 and PCM connector C-61 <2.4L Engine> or 
C-63 <3.0L Engine> for loose, corroded or damaged 
terminals, or terminals pushed back in the connector.
Q: Are the connectors and terminals in good condition?

YES : Go to Step 12.
NO :  Repair or replace the damaged components. Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-2

.

AC102447AF

BATTERY

CONNECTOR: A-17X

A-17X

FRONT OF VEHICLE

ACX02479

CONNECTOR: B-40

AK

B-40

ACX02479

CONNECTOR: B-40

AK

B-40

AC001657

CONNECTOR: C-61 <2.4L ENGINE> OR
C-63 <3.0L ENGINE>

PCM

BC

C-61 <2.4L ENGINE> OR C-63 <3.0L ENGINE>

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-254

STEP 12. Check the harness for an open or short circuit to 
ground between A/T control solenoid valve assembly 
connector B-40 (terminals 6 and 7) and PCM connector 
C-61 <2.4L Engine> or C-63 <3.0L Engine> (terminals 107 
and 129).
Q: Are the harness wires in good condition?

YES : Go to Step 13.
NO :  Repair or replace the harness wire.

STEP 13. Check the harness for an open or short circuit to 
ground between A/T control solenoid valve assembly 
connector B-40 (terminals 6, 7, and 10) and solenoid valve 
connectors B-40-4 and B-40-5.
Q: Is the harness wire in good condition?

YES : Replace the PCM.
NO :  Replace the harness wire.

ACX02479

CONNECTOR: B-40

AK

B-40

AC001657

CONNECTOR: C-61 <2.4L ENGINE> OR
C-63 <3.0L ENGINE>

PCM

BC

C-61 <2.4L ENGINE> OR C-63 <3.0L ENGINE>

ACX02479

CONNECTOR: B-40

AK

B-40

AC002219

CONNECTORS: B-40-4, B-40-5

CI

B-40-5

VALVE BODY
ASSEMBLY

B-40-4

2

1

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-255

DTC 41 (P0731): 1st Gear Incorrect Ratio 
DTC 42 (P0732): 2nd Gear Incorrect Ratio 
DTC 43 (P0733): 3rd Gear Incorrect Ratio 
DTC 44 (P0734): 4th Gear Incorrect Ratio 
DTC 46 (P0736): Reverse Gear Incorrect Ratio

AC106636

Input Shaft Speed Sensor and Output Shaft Speed Sensor System Circuit

AB

AC001850

CONNECTORS: B-38, B-42

AG

B-42

B-38

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-256

.

CIRCUIT OPERATION

• The input shaft speed sensor generates a pulsed 

signal of 0 

⇔ 5 volts. The pulsed signal fre-

quency increases with an increase in the input 
shaft speed.

• The PCM (terminal 103) continuously monitors 

the input shaft speed signal.

• The output shaft speed sensor generates a 

pulsed signal of 0 

⇔ 5 volts. The pulsed signal 

frequency increases with an increase in the out-
put shaft speed.

• The PCM (terminal 104) continuously monitors 

the output shaft speed signal.

.

AC106611AB

CONNECTOR: C-28

C-28

AC001657

CONNECTORS: C-50 <2.4L ENGINE> OR
C-52 <3.0L ENGINE>, C-61 <2.4L ENGINE>
OR C-63 <3.0L ENGINE>

PCM

BG

C-50 <2.4L ENGINE> OR 
C-52 <3.0L ENGINE>

C-61 <2.4L ENGINE> 
OR 
C-63 <3.0L ENGINE>

AC106814AB

CONNECTORS: C-111, C-112

JUNCTION BLOCK
(FRONT VIEW)

C-111

C-112

C-111

C-112