Mitsubishi Montero (2002-2004). Manual - part 88

AUTO A/C DIAGNOSIS

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-45

STEP 22. Check dual pressure switch connector A-22 and 
powertrain control module connector D-134 for damage.
Q: Are dual pressure switch connector A-22 and 

powertrain control module connector D-134 in good 
condition?
YES : Go to Step 23.
NO :  Repair or replace the connector. Refer to GROUP 

00E, Harness Connector Inspection 

P.00E-2

. Check 

that the air conditioning works normally.

AC204167

CONNECTOR : A-22

AW

A-22(BR)

A-22(BR)

2 1

HARNESS SIDE

AC204171

CONNECTOR: D-134

HARNESS SIDE

D-134(GR)

D-134(GR)

AE

80

87

73

66

67

65
74

81

75

82

6261

72

68

69

70

71

78

85

77

8483

76

79

86

63

64

8988

AUTO A/C DIAGNOSIS

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-46

STEP 23. Check the wiring harness between dual pressure 
switch connector A-22 (terminal 1) and powertrain control 
module connector D-134 (terminal 69).
NOTE: Also check intermediate connectors A-03. If intermedi-
ate connectors A-03 are damaged, repair or replace the con-
nector as described in GROUP 00E, Harness Connector 
Inspection 

P.00E-2

.

Q: Is the wiring harness between dual pressure switch 

connector A-22 (terminal 1) and powertrain control 
module connector D-134 (terminal 69) in good 
condition?
YES : Go to Step 24.
NO :  Repair the wiring harness. Check that the air 

conditioning works normally.

AC204185

CONNECTORS : A-03, A-22

A-03(B)

A-22(BR)

A-03(B)

AN

A-22(BR)

2 1

6

12

5

3 4

2

1

9 10

8

7

11

HARNESS SIDE

AC204171

CONNECTOR: D-134

HARNESS SIDE

D-134(GR)

D-134(GR)

AE

80

87

73

66

67

65
74

81

75

82

6261

72

68

69

70

71

78

85

77

8483

76

79

86

63

64

8988

AUTO A/C DIAGNOSIS

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-47

STEP 24. Check A/C-ECU connector D-23 and powertrain 
control module connector D-134 for damage.
Q: Are A/C-ECU connector D-23 and powertrain control 

module connector D-134 in good condition?
YES : Go to Step 25.
NO :  Repair or replace the connector. Refer to GROUP 

00E, Harness Connector Inspection 

P.00E-2

. Check 

that the air conditioning works normally.

AC204170

CONNECTOR : D-23

D-23(B)

D-23(B)

CP

HARNESS 
SIDE

1

3

4

2

12

1413

11

6

7

8

10 9

18

19

20

16

17

5

15

AC204171

CONNECTOR: D-134

HARNESS SIDE

D-134(GR)

D-134(GR)

AE

80

87

73

66

67

65
74

81

75

82

6261

72

68

69

70

71

78

85

77

8483

76

79

86

63

64

8988

AUTO A/C DIAGNOSIS

TSB Revision

AUTOMATIC AIR CONDITIONING

55B-48

STEP 25. Check the wiring harness between A/C-ECU 
connector D-23 (terminal 7) and powertrain control module 
connector D-134 (terminal 78).

NOTE: Also check intermediate connector E-111. If intermedi-
ate connector E-111 is damaged, repair or replace the connec-
tor as described in GROUP 00E, Harness Connector 
Inspection 

P.00E-2

.

Q: Is the wiring harness between A/C-ECU connector D-23 

(terminal 7) and powertrain control module connector 
D-134 (terminal 78) in good condition?
YES : Go to Step 26.
NO :  Repair the wiring harness. Check that the air 

conditioning works normally.

AC204170

CONNECTOR : D-23

D-23(B)

D-23(B)

CP

HARNESS 
SIDE

1

3

4

2

12

1413

11

6

7

8

10 9

18

19

20

16

17

5

15

AC204171

CONNECTOR: D-134

HARNESS SIDE

D-134(GR)

D-134(GR)

AE

80

87

73

66

67

65
74

81

75

82

6261

72

68

69

70

71

78

85

77

8483

76

79

86

63

64

8988

AC204176

CONNECTOR : E-111

BF

15

4

14

37

36

26 27

12

11

35

34

23 24

3

13

25

9

2

8

32

20 21

6

5

17

29

30

18

1

7

19

31

10

22

33

16

28

38