Mitsubishi Montero (2004+). Manual - part 238

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-439

STEP 8. Check for harness damage between throttle 
position sensor connector B-05 (terminal No. 2) and PCM 
connector D-135 (terminal No. 106).
Q: Is the harness wire in good condition?

YES : Go to Step 9.
NO :  Repair it. Then go to Step 11.

AK201174

1

6 5 4 3 2

B-05(B)

CONNECTOR: B-05

HARNESS 
CONNECTOR: 
COMPONENT SIDE

AB

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)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-440

STEP 9. Check for open circuit, short circuit to ground and 
harness damage between throttle position sensor 
connector B-05 (terminal No. 3) and PCM connector D-135 
(terminal No. 113).
Q: Is the harness wire in good condition?

YES : Go to Step 10.
NO :  Repair it. Then go to Step 11.

STEP 10. Replace the throttle body assembly.
(1) Replace the throttle body assembly.
(2) Turn the ignition switch to the "ON" position.
(3) After the DTC has been deleted, read the DTC again.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC P0222 set?

YES : Replace the PCM. Then go to Step 11.
NO :  The procedure is complete.

AK201174

1

6 5 4 3 2

B-05(B)

CONNECTOR: B-05

HARNESS 
CONNECTOR: 
COMPONENT SIDE

AB

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)

AK201174

1

6 5 4 3 2

B-05(B)

CONNECTOR: B-05

HARNESS 
CONNECTOR: 
COMPONENT SIDE

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-441

STEP 11. Using scan tool MB991958, read the diagnostic 
trouble code (DTC).

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK"(OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) After the DTC has been deleted, read the DTC again.
(4) Turn the ignition switch to the "LOCK"(OFF) position.
Q: Is DTC P0222 set?

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

AK302970

AB

MB991911

MB991824

MB991827

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-442

DTC P0223: Throttle Position Sensor (Sub) Circuit High Input

.

CIRCUIT OPERATION

• A 5-volt power supply is applied on the throttle 

position sensor (sub) power terminal (terminal 
No. 2) from the PCM (terminal No. 106).
The ground terminal (terminal No. 4) is grounded 
with PCM (terminal No. 105).

• When the throttle valve shaft is turned from the 

idle position to the fully opened position, the 
resistance between the throttle position sensor 
(sub) output terminal (terminal No. 3) and ground 
terminal (terminal No. 4) will increase according 
to the rotation.

.

AK201162

RED

GREEN

BLA

C

K

B-05

5 V

106

2

THROTTLE
POSITION
SENSOR 
(SUB)

POWERTRAIN CONTROL MODULE (PCM)

113

105

3

4

Throttle Position Sensor (Sub) Circuit

6

1 2 3 4 5

9192

939495

96979899

100

105

113114

115116117

118119120

106

107108109

110111112

101102103

104

D-135

(MU803805)

AK201173

THROTTLE 
POSITION 
SENSOR

AB

B-05(B)

CONNECTOR: B-05

AK201038AF

CONNECTOR: D-135

PCM

D-135(GR)