Mitsubishi Eclipse. Manual - part 779

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-125

STEP 7. Check input shaft speed sensor connector B-42 
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 in good condition?

YES : Go to Step 8.
NO :  Repair or replace the damaged components. Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-2

.

STEP 8. Check the harness for open circuit or damage 
between input shaft speed sensor connector B-42 terminal 
2 and PCM connector C-61 <2.4L Engine> or C-63 <3.0L 
Engine> terminal 103.
Q: Is the harness wire in good condition?

YES : Go to Step 19.
NO :  Repair or replace the harness wire.

AC001835

CONNECTOR: B-42

AH

B-42

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>

AC001835

CONNECTOR: B-42

AH

B-42

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-126

STEP 9. Check input shaft speed sensor connector B-42 
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 10.
NO :  Repair or replace the damages components. Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-2

.

STEP 10. Check the harness for short circuit to ground 
between input shaft speed sensor connector B-42 terminal 
2 and PCM connector C-61 <2.4L Engine> or C-63 <3.0L 
Engine> terminal 103.
Q: Is the harness wire in good condition?

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

AC001835

CONNECTOR: B-42

AH

B-42

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>

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>

AC001835

CONNECTOR: B-42

AH

B-42

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-127

STEP 11. Measure the ground circuit for resistance at the 
input shaft speed sensor connector B-42.
(1) Disconnect connector B-42 from the speed sensor and 

measure at the harness side.

(2) Measure the resistance between terminal 1 and ground.

• The resistance should measure less than 2 ohms.

Q: Is the measured resistance less than 2 ohms?

YES : Go to Step 16.
NO :  Go to Step 12.

STEP 12. Measure the resistance at the PCM connector 
C-50 <2.4L Engine> or C-52 <3.0L Engine> by backprobing.
(1) Do not disconnect connector C-50 <2.4L Engine> or C-52 

<3.0L Engine>.

(2) Turn the ignition switch to the "ON" position.

(3) Measure the resistance between terminal 16 and ground by 

backprobing.

• The resistance should measure less than 2 ohms.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured resistance less than 2 ohms?

YES : Go to Step 13.
NO :  Go to Step 15.

AC001835

CONNECTOR: B-42

AH

B-42

ACX02128AO

B-42 HARNESS
CONNECTOR:
COMPONENT SIDE

AC001657

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

PCM

BE

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

AC100047

1
9

24

2

10 11
25

3

12
26

4

13

27

5

19
32

6

20 21
33

7

22
34

8

23
35

14
28

15 16
29

17

30

18

31

AM

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

HARNESS CONNECTOR:
HARNESS SIDE

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-128

STEP 13. Check input shaft speed sensor connector B-42 
and PCM connector C-50 <2.4L Engine> or C-52 <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 14.
NO :  Repair or replace the damaged components. Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-2

.

STEP 14. Check the harness for open circuit or damage 
between input shaft speed sensor harness side connector 
B-42 terminal 1 and PCM connector C-50 <2.4L Engine> or 
C-52 <3.0L Engine> terminal 16.
Q: Is the harness wire in good condition?

YES : Go to Step 16.
NO :  Repair or replace the harness wire.

AC001835

CONNECTOR: B-42

AH

B-42

AC001657

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

PCM

BE

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

AC001835

CONNECTOR: B-42

AH

B-42

AC001657

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

PCM

BE

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