Mitsubishi Galant (2004+). Manual - part 823

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-109

STEP 6. Check for open circuit and harness damage 
between intake air temperature sensor connector B-10 
(terminal No. 4) and PCM connector B-21 (terminal No. 69).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 9.
NO :  Repair it. Then go to Step 9.

AK303805

2

1

3

4

AB

CONNECTOR: B-10

B-10 (GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AK303018

55

56

54 53 52 51

57

62 61 60 59 58

63

69 68 67 66 65 64

70

75 74 73 72 71

76

82 81 80 79 78 77

83

CONNECTOR: B-21

PCM

AB

HARNESS CONNECTOR: 
COMPONENT SIDE

AIR CLEANER

B-21 (B)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-110

STEP 7. Check harness connector B-22 at PCM for 
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 8.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 9.

AK303016

104

96

94

95

93 92 91

99 98 97

103 102 101 100

108 107 106 105

113 112 111 110 109

CONNECTOR: B-22

B-22 (B)

PCM

AB

HARNESS CONNECTOR: 
COMPONENT SIDE

AIR CLEANER

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-111

STEP 8. Check for open circuit and harness damage 
between intake air temperature sensor connector B-10 
(terminal No. 1) and PCM connector B-22 (terminal No. 
107).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 9.
NO :  Repair it. Then go to Step 9.

STEP 9. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to 

Diagnostic Function 

− OBD-II Drive Cycle − Procedure 6 − 

Other Monitor 

P.13A-5

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0111 set?

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

AK303805

2

1

3

4

AB

CONNECTOR: B-10

B-10 (GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AK303016

104

96

94

95

93 92 91

99 98 97

103 102 101 100

108 107 106 105

113 112 111 110 109

CONNECTOR: B-22

B-22 (B)

PCM

AB

HARNESS CONNECTOR: 
COMPONENT SIDE

AIR CLEANER

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-112

DTC P0112: Intake Air Temperature Circuit Low Input

CAUTION

If DTC P0112 has been set, TCL related DTC 
U1120 is also set. After P0112 has been diag-
nosed, don't forget to erase DTC U1120.

.

100

99

92

91

93 94 95

96 97 98

101 102 103 104

105 106 107 108

109 110 111 112 113

52

51

53 54 55 56

57

58 59 60 61 62

63

64 65 66 67 68 69

70

71 72 73 74 75

76

77 78 79 80 81 82

83

1

2

3 4

AK303812

BLA

CK

RED-BLUE

INTAKE AIR TEMPERATURE SENSOR
(INTEGRATED IN MASS AIRFLOW 
 SENSOR)

POWERTRAIN CONTROL MODULE (PCM)

5 V

107

4

69

1

B-10

Intake Air Temperature Sensor Circuit

B-21

B-22

AK303802AB

CONNECTOR: B-10

MASS AIRFLOW SENSOR
(WITH BUILT-IN INTAKE AIR 
TEMPERATURE SENSOR)

B-10 (GR)

AK303013

CONNECTORS: B-21, B-22

PCM

AB

AIR CLEANER

B-22 (B)

B-21 (B)