Mitsubishi Galant 9G. Manual - part 523

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-170

(4) Measure the voltage between terminal 67 and ground.

• When transmission range is "P," voltage should equal 

battery positive voltage.

• When transmission range is "R," voltage should mea-

sure 0.5 volt or less.

• When transmission range is "N," voltage should mea-

sure 0.5 volt or less.

• When transmission range is "D," voltage should mea-

sure 0.5 volt or less.

• When transmission range is "3," voltage should mea-

sure 0.5 volt or less. <Vehicles without sport mode>

• When transmission range is "2," voltage should mea-

sure 0.5 volt or less. <Vehicles without sport mode>

• When transmission range is "L," voltage should mea-

sure 0.5 volt or less. <Vehicles without sport mode>

• When transmission range is sport mode, voltage should 

measure 0.5 volt or less. <Vehicles with sport mode>

Q: Is the measured voltage within the specified range?

YES : Go to Step 6.
NO :  Turn the ignition switch to the "LOCK" (OFF) position. 

Go to Step 5.

AC210399

51

58

71

64

77

76

83

70

63

57

73 72

75 74

80

82 81

79 78

54

67

JAE

62

69

56

61

68

55

59

66

60

53

65

52

AC

B-21 HARNESS 
CONNECTOR:
COMPONENT SIDE

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-171

STEP 5. Check harness for damage between PCM 
connector B-21 terminal 67 and transmission range switch 
connector B-110 terminal 3.
Q: Is the harness wire in good condition?

YES : Go to Step 20.
NO :  Repair or replace the harness wire.

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

AC210068

CONNECTOR: B-110

B-110 (B)

AE

TRANSMISSION
RANGE SWITCH

1

7

2

8

3

5

9

4

10

6

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-172

STEP 6. Measure the transmission range switch output 
voltage at PCM connector B-21 by using check harness 
special tool MB991923. ("R" position)
Measure the voltage between terminal 61 and ground.

• When transmission range is "P," voltage should measure 

0.5 volt or less.

• When transmission range is "R," voltage should equal bat-

tery positive voltage.

• When transmission range is "N," voltage should measure 

0.5 volt or less.

• When transmission range is "D," voltage should measure 

0.5 volt or less.

• When transmission range is "3," voltage should measure 

0.5 volt or less. <Vehicles without sport mode>

• When transmission range is "2," voltage should measure 

0.5 volt or less. <Vehicles without sport mode>

• When transmission range is "L," voltage should measure 

0.5 volt or less. <Vehicles without sport mode>

• When transmission range is sport mode, voltage should 

measure 0.5 volt or less. <Vehicles with sport mode>

Q: Is the measured voltage within the specified range?

YES : Go to Step 8.
NO :  Turn the ignition switch to the "LOCK" (OFF) position. 

Go to Step 7.

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

AC210402

51

58

71

64

77

76

83

70

63

57

73 72

75 74

80

82 81

79 78

54

67

JAE

62

69

56

61

68

55

59

66

60

53

65

52

AC

B-21 HARNESS 
CONNECTOR:
COMPONENT SIDE

AUTOMATIC TRANSAXLE DIAGNOSIS

TSB Revision

AUTOMATIC TRANSAXLE

23A-173

STEP 7. Check the harness for damage between PCM 
connector B-21 terminal 61 and transmission range switch 
connector B-110 terminal 7.
Q: Is the harness wire in good condition?

YES : Go to Step 20.
NO :  Repair or replace the harness wire.

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

AC210068

CONNECTOR: B-110

B-110 (B)

AE

TRANSMISSION
RANGE SWITCH

1

7

2

8

3

5

9

4

10

6