Mitsubishi Galant. Manual — part 418

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-139

STEP 25. Check the switch output voltage at PCM
connector C-42 by backprobing.
(1) Do not disconnect connector C-42.
(2) Turn the ignition switch to "ON" position.
(3) Move the selector lever to "3" position.

(4) Measure the voltage between terminal 109 and ground by

backprobing.

•

Voltage should be battery positive voltage.

(5) Turn the ignition switch to "LOCK"(OFF) position.

Q: Is the voltage normal?

YES : Go to Step 10.
NO : Go to Step 26.

STEP 26. Check connector C-42 at PCM for damage.
Q: Is the connector in good condition?

YES : Repair it because of the harness open circuit or short

circuit to ground between the Park/Neutral position
switch connector B-39 terminal 5 and PCM connector
C-42 terminal 109.

NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

.

AC004197

PCM

AF

CONNECTOR: C-42

AC001907

C-42 CONNECTOR
HARNESS SIDE VIEW

AE

AC004197

PCM

AF

CONNECTOR: C-42

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-140

STEP 27. Check the Park/Neutral position switch.

Check for continuity between terminals for each selector
position.

Q: Is the switch operating properly?

YES : Go to Step 28.
NO : Replace the Park/Neutral position switch. Refer to

GROUP 23B, Transaxle

P.23B-10

.

STEP 28. Check connector B-39 at the Park/Neutral
position switch for damage.
Q: Is the connector in good condition?

YES : Go to Step 29.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

.

ITEMS

TERMINAL CONNECTION
OF TESTER

SPECIFIED
CONDITION

P

3

−

8, 9

−

10

Less than 2 ohm.

R

7

−

8

N

4

−

8, 9

−

10

D

1

−

8

3

5

−

8

2

2

−

8

L

6

−

8

AC004672

DIPSTICK

PARK/NEUTRAL
POSITION (PNP)
SWITCH

AC

AC001846

P

R

N

D

3

2

L

AB

AC001844AI

CONNECTOR: B-39

DIPSTICK

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-141

STEP 29. Check the switch output voltage at PCM
connector C-42 by backprobing.
(1) Do not disconnect connector C-42.
(2) Turn the ignition switch to "ON" position.
(3) Move the selector lever to "2" position.

(4) Measure the voltage between terminal 122 and ground by

backprobing.

•

Voltage should be battery positive voltage.

(5) Turn the ignition switch to "LOCK" (OFF) position.

Q: Is the voltage normal?

YES : Go to Step 10.
NO : Go to Step 30.

STEP 30. Check connector C-42 at PCM for damage.
Q: Is the connector in good condition?

YES : Repair it because of the harness open circuit or short

circuit to ground between the Park/Neutral position
switch connector B-39 terminal 2 and PCM connector
C-42 terminal 122.

NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

.

AC004197

PCM

AF

CONNECTOR: C-42

AC001908

C-42 CONNECTOR
HARNESS SIDE VIEW

AE

AC004197

PCM

AF

CONNECTOR: C-42

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-142

STEP 31. Check the Park/Neutral position switch.

Check for continuity between terminals for each selector
position.

Q: Is the switch operating properly?

YES : Go to Step 32.
NO : Replace the Park/Neutral position switch. Refer to

GROUP 23B, Transaxle

P.23B-10

.

STEP 32. Check connector B-39 at the Park/Neutral
position switch for damage.
Q: Is the connector in good condition?

YES : Go to Step 33.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

.

ITEMS

TERMINAL CONNECTION
OF TESTER

SPECIFIED
CONDITION

P

3

−

8, 9

−

10

Less than 2 ohm.

R

7

−

8

N

4

−

8, 9

−

10

D

1

−

8

3

5

−

8

2

2

−

8

L

6

−

8

AC004672

DIPSTICK

PARK/NEUTRAL
POSITION (PNP)
SWITCH

AC

AC001846

P

R

N

D

3

2

L

AB

AC001844AI

CONNECTOR: B-39

DIPSTICK