Mitsubishi Montero (2004+). Manual — part 943

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-347

STEP 8. Check intermediate connector D-28, A/C-ECU
connector D-23 <Vehicles with full automatic A/C> and
automatic compressor controller connector D-119
<Vehicles with manual A/C> 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 9.
NO : Repair or replace the damaged components. Refer to

GROUP 00E, Harness Connector Inspection

P.00E-2

.

AC204188

CONNECTORS : D-23, D-28, D-119

D-23 (B)

D-23, D-119

D-119 (B)

BE

D-28

D-28

20

10

19

9

17

7

16

6

14

4

3

13

5

15

11

1 2

12

8

18

2 3

27

32

28

33

16

15

4 5

19

18

29

17

34

7 8

35

22

21

9 10

30

36

31

37

25

24

23

6

20

1

14

26

11

13

12

38

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-348

STEP 9. Check the harness for open circuit between dual
pressure switch connector A-22 terminal 2 and A/C-ECU
connector D-23 terminal 5 <Vehicles with full automatic
A/C> or dual pressure switch connector A-22 terminal 2
and automatic compressor controller connector D-119
terminal 4 <Vehicles with manual A/C>.
Q: Is the harness wire in good condition?

YES : Go to Step 14.
NO : Repair or replace the harness wire.

AC204167

CONNECTOR : A-22

AV

A-22 (BR)

A-22

1 2

AC204188

CONNECTORS : D-23, D-119

D-23 (B)

D-23, D-119

D-119 (B)

BD

20

10

19

9

17

7

16

6

14

4

3

13

5

15

11

1 2

12

8

18

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-349

STEP 10. Measure the switch output voltage at PCM
connector D-134 by backprobing.
(1) Do not disconnect connector D-134.
(2) Start the engine and run at idle.
(3) Operate the A/C.

(4) Measure the voltage between terminal 69 and ground by

backprobing.

• When the A/C is in operation, the voltage should mea-

sure battery positive voltage.

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

YES : Go to Step 15.
NO : Go to Step 11.

AC204681AC

CONNECTOR: D-134

D-134 (GR)

61 62

63 64

65 66 67 68 69 70 71 72 73

82

89

81

88

80

79

78

77

87

86

85

76

75

74

84

83

AC204918 BI

D-134 HARNESS CONNECTOR :
HARNESS SIDE

76

85

65

72

71

73

82

75

81

74

63 64

66

70

69

68

67

78

87

79

88 89

80

77

86

62

61

83 84

AUTOMATIC TRANSMISSION DIAGNOSIS

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AUTOMATIC TRANSMISSION

23A-350

STEP 11. Check intermediate connector A-03 and PCM
connector D-134 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

.

AC204167

CONNECTOR : A-03

AT

A-03 (B)

6

12

5

3 4

2

1

9 10

8

7

11

AC204681AC

CONNECTOR: D-134

D-134 (GR)

61 62

63 64

65 66 67 68 69 70 71 72 73

82

89

81

88

80

79

78

77

87

86

85

76

75

74

84

83