Mitsubishi Galant 9G. Manual — part 549

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-274

STEP 7. Measure the supply voltage at A/T control relay
connector B-16X in the engine component relay box.
(1) Disconnect the A/T control relay.
(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal 2 and ground.

• The measured voltage should equal battery positive

voltage.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage equal to battery positive

voltage?
YES : Go to Step 10.
NO : Go to Step 8.

AC306354

RELAY BOX

AB

CONNECTOR: B-16X

2

1

3

4

FRONT OF
VEHICLE

AC210734

1

3

2

4

AC

B-16X HARNESS
CONNECTOR:
RELAY BOX SIDE

FRONT OF
VEHICLE

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-275

STEP 8. Check intermediate connector A-13, joint
connector (1) C-01 and junction block connector C-214 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Are the connectors in good condition?

YES : Go to Step 9.
NO : Repair or replace the damaged components. Refer to

GROUP 00E, Harness Connector Inspection

P.00E-2

.

AC306223

A-13 (GR)

AB

CONNECTOR: A-13

1

4

7

8

2 3

5

13

14

17

15

12

16

11

10

9

6

AC305231

CONNECTOR: C-01

AS

33

22

11

28

17

16

15

14

13

12

25

2324

2627

3

1 2

4 5

21

20

19

18

29 30

32

31

7

6

8

10

9

AC207120

CONNECTOR: C-214

AU

C-214

6

1

7

2

9

8

10

3

5

12

11

4

1314

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-276

STEP 9. Check the harness for open circuit or short circuit
to ground between A/T control relay connector B-16X
terminal 2 in the engine component relay box and junction
block connector C-214 terminal 12.
Q: Is the harness wire in good condition?

YES : Go to Step 15.
NO : Repair or replace the harness wire.

AC306354

RELAY BOX

AB

CONNECTOR: B-16X

2

1

3

4

FRONT OF
VEHICLE

AC207120

CONNECTOR: C-214

AU

C-214

6

1

7

2

9

8

10

3

5

12

11

4

1314

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-277

STEP 10. Measure the A/T control relay output voltage at
PCM connector B-21 by using check harness special tool
MB991923.
(1) Disconnect all the connectors from the PCM.

(2) Connect special tool MB991923 (check harness) between

the PCM and the body-side harness connector.

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

AC306248AC

B-21
(B)

CONNECTOR: B-21

PCM

AIR
CLEANER

73

80

54

67

60

71 72

77 78 79

64

51

59

58

65

52

66

53

75

74

76

81 82

83

63

JAE

62

68

61

55

69

56

70

57

AC209793AG

SPECIAL TOOL 33-PIN CONNECTOR
(PCM CONNECTOR B-21)

B-21
(GR)

55

56

54 53 52 51

57

62 61 60 59 58

63

69 68 67 66 65 64

70

75 74 73 72 71

76

82 81 80 79 78 77

83

PCM

MB991923

BODY SIDE
HARNESS