Mitsubishi Montero (2004+). Manual - part 520

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-49

STEP 2. Using scan tool MB991958, check the MFI system 
diagnostic trouble code.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to "LOCK" (OFF) position before connect-
ing or disconnecting scan tool.
(1) Connect scan tool MB991958 to the data link connector. 
(2) Turn the ignition switch "ON" position.
(3) Check the MFI system diagnostic trouble code.
Q:  Are MFI system-related DTC(s) set to the MFI system?

YES : Refer to GROUP 13A, Multiport Fuel Injection (MFI) 

Diagnosis 

P.13A-26

.

NO :  Go to Step 3.

AC306409AF

MB991911

MB991824

MB991827

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-50

STEP 3. Check combination meter connector D-03 and 
PCM connector D-134 for loose, corroded or damaged 
terminals, or terminals pushed back in the connector.

Q: Are combination meter connector D-03 and PCM 

connector D-134 in good condition?
YES : Go to Step 4.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. The tachometer should work normally.

AC204170

CONNECTOR : D-03

AC

D-03(GR)

HARNESS 
SIDE

51

52

61 60

53

54

56

57

55

63

66 65 64

59

62

58

67

D-03(GR)

AC204171

CONNECTOR : D-134

D-134(GR)

D-134(GR)

AT

HARNESS SIDE

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

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-51

STEP 4. Check the wiring harness between combination 
meter connector D-03 (terminal 66) and PCM connector 
D-134 (terminal 87).

NOTE: Also check intermediate connector E-111 and joint con-
nector D-29. If intermediate connector E-111 or joint connector 
D-29 is damaged, repair or replace the connector as described 
in GROUP 00E, Harness Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between combination meter 

connector D-03 (terminal 66) and PCM connector D-134 
(terminal 87) in good condition?
YES : Go to Step 5.
NO :  Repair the wiring harness. The tachometer should 

work normally.

AC204188

CONNECTORS: D-03, D-29

BI

HARNESS SIDE

D-29

D-29

9 10

8

6 7

31 32

30

29

18 19 20 21

5

4

2

1

3

27

26

24

23

25

12 13 14 15 16 17

28

11
22
33

D-03(GR)

51

52

61 60

53

54

56

57

55

63

66 65 64

59

62

58

67

D-03(GR)

AC204171

CONNECTOR : D-134

D-134(GR)

D-134(GR)

AT

HARNESS SIDE

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

COMBINATION METER ASSEMBLY AND VEHICLE SPEED SENSOR

TSB Revision

CHASSIS ELECTRICAL

54A-52

STEP 5. Replace and check the combination meter.
Q:  Does the tachometer operate?

YES : There is no action to be taken.
NO :  Replace the PCM. The tachometer should work 

normally.

INSPECTION PROCEDURE 3: Fuel Gauge does not Work.

COMBINATION
METER

JOINT 
CONNECTOR (5)

CPU

FUEL 
GAUGE

FUEL LEVEL
SENSOR 

Fuel Gauge Circuit