Mitsubishi Montero (2002-2004). Manual — part 584

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-33

STEP 14. Check for harness damage between barometric
pressure sensor connector B-48 (terminal No. 5) and PCM
connector D-134 (terminal No. 88).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 18.
NO : Repair it. Then go to Step 18.

STEP 15. Check connector B-48 at barometric pressure
sensor for damage.
Q: Is the connector in good condition?

YES : Go to Step 16.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 18.

AK200937

3

4

5

1

2

6

7

AB

HARNESS
CONNECTOR:
COMPONENT SIDE

CONNECTOR: B-48

B-48(B)

AK201166

61

62

63

64

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66

67

68

69

70

71

76

77

78

79

85

86

87

80

72

73

74

75

81

82

83

84

88

89

CONNECTOR: D-134

AB

PCM

D-134(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AK200937

3

4

5

1

2

6

7

AB

HARNESS
CONNECTOR:
COMPONENT SIDE

CONNECTOR: B-48

B-48(B)

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-34

STEP 16. Check connector D-135 at PCM for damage.
Q: Is the connector in good condition?

YES : Go to Step 17.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 18.

STEP 17. Check for short circuit to ground and harness
damage between barometric pressure sensor connector B-
48 (terminal No. 2) and PCM connector D-135 (terminal No.
100).
Q: Is the harness wire in good condition?

YES : Replace the volume airflow sensor. Then go to Step

18.

NO : Repair it. Then go to Step 18.

AK200947

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

CONNECTOR: D-135

HARNESS CONNECTOR:
COMPONENT SIDE

AB

PCM

D-135(GR)

AK200937

3

4

5

1

2

6

7

AB

HARNESS
CONNECTOR:
COMPONENT SIDE

CONNECTOR: B-48

B-48(B)

AK200947

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

CONNECTOR: D-135

HARNESS CONNECTOR:
COMPONENT SIDE

AB

PCM

D-135(GR)

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-35

STEP 18. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to

GROUP 13A, Procedure 6

− Other Monitor

P.13Ab-2

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0107 set?

YES : Retry the troubleshooting.
NO : The inspection is complete.

DTC P0108: Barometric Pressure Circuit High Input

AK201127

GREEN-YELLO

W

GREEN-WHITE

SKY B

ULE

BAROMETRIC PRESSURE SENSOR
(INCORPORATED IN VOLUME AIRFLOW
SENSOR)

1

97

5 V

100

88

2

5

POWERTRAIN CONTROL MODULE (PCM)

1 2 3 4 5 6 7

B-48

Barometric Pressure Sensor Circuit

9192

939495

96979899

100

105

113114

115116117

118119120

106

107108109

110111112

101102103

104

D-135

(MU803805)

61
656667686970 717273
74757677787980 8182
8384

858687

8889

62

6364

D-134

(MU803804)

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-36

.

CIRCUIT OPERATION

• A 5-volt voltage is supplied to the barometric

pressure sensor power terminal (terminal No. 1)
from the PCM (terminal No. 97). The ground ter-
minal (terminal No. 5) is grounded with PCM (ter-
minal No. 88).

• A voltage that is proportional to the atmospheric

pressure is sent to the PCM (terminal No. 100)
from the barometric pressure sensor output ter-
minal (terminal No. 2).

.

TECHNICAL DESCRIPTION

• The barometric pressure sensor outputs a volt-

age which corresponds to the barometric pres-
sure.

• The PCM checks whether this voltage is within a

specified range.

.

DTC SET CONDITIONS

Check Conditions

• 2 seconds or more have passed since the start-

ing sequence was completed.

• Battery positive voltage is higher than 8 volts.

Judgement Criteria

• Barometric pressure sensor output signal has

continued to be approximately 113 kPa (16 psi) or
higher (approximately 4,000 ft below sea level)
for 10 seconds.

.

TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)

• Barometric pressure sensor failed.

• Open or shorted barometric pressure sensor cir-

cuit, or loose connector.

• PCM failed.

AK200940

BAROMETRIC
PRESSURE
SENSOR

AB

CONNECTOR: B-48

B-48(B)

AK201038AK

CONNECTORS: D-134, D-135

PCM

D-134(GR) D-135(GR)