Mitsubishi Montero (2002-2004). Manual - part 604

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-113

STEP 7. Check harness connector B-07 at right bank 
heated oxygen sensor (front) 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 15. 

AK201274

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2

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CONNECTOR: B-07

B-07(B)

AB

HARNESS 
CONNECTOR: 
COMPONENT SIDE

RIGHT BANK
HEATED OXYGEN
SENSOR (FRONT)

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-114

STEP 8. Check the continuity at right bank heated oxygen 
sensor (front) harness side connector B-07.
(1) Disconnect the connector B-07 and measure at the harness 

side.

(2) Check for the continuity between terminal No. 2 and 

ground.

• Should be less than 2 ohms.

Q: Is the continuity normal?

YES : Go to Step 11.
NO :  Go to Step 9.

STEP 9. Check harness connector D-135 at PCM for 
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 10.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 15. 

AK201274

1

2

3

4

CONNECTOR: B-07

B-07(B)

AB

HARNESS 
CONNECTOR: 
COMPONENT SIDE

RIGHT BANK
HEATED OXYGEN
SENSOR (FRONT)

AK000239AW

1

2
4 3

B-07 HARNESS 
CONNECTOR: 
COMPONENT SIDE

AK200947

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CONNECTOR: D-135

HARNESS CONNECTOR: 
COMPONENT SIDE

AB

PCM

D-135(GR)

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-115

STEP 10. Check for open circuit and harness damage 
between right bank heated oxygen sensor (front) 
connector B-07 (terminal No. 2) and PCM connector D-135 
(terminal No. 96).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 15.
NO :  Repair it. Then go to Step 15.

AK201274

1

2

3

4

CONNECTOR: B-07

B-07(B)

AB

HARNESS 
CONNECTOR: 
COMPONENT SIDE

RIGHT BANK
HEATED OXYGEN
SENSOR (FRONT)

AK200947

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CONNECTOR: D-135

HARNESS CONNECTOR: 
COMPONENT SIDE

AB

PCM

D-135(GR)

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-116

STEP 11. Check harness connector D-135 at PCM for 
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 12.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 15. 

AK200947

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

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115

116

117

118

119

120

CONNECTOR: D-135

HARNESS CONNECTOR: 
COMPONENT SIDE

AB

PCM

D-135(GR)