Mitsubishi Montero (2002-2004). Manual — part 622

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-185

STEP 7. Check for open circuit or short circuit to ground
between right bank heated oxygen sensor (rear) connector
C-14 (terminal No. 3) and PCM connector D-132 (terminal
No. 24).
NOTE: Check harness after checking intermediate connector
E-114. If intermediate connector E-114 is damaged, repair or
replace it. Refer to GROUP 00E, Harness Connector Inspec-
tion

P.00E-2

. Then go to Step 12.

Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 12.
NO : Repair it. Then go to Step 12.

AK201276

1

2

3

4

CONNECTOR: C-14

C-14(GR)

AB

HARNESS
CONNECTOR:
COMPONENT SIDE

RIGHT BANK
HEATED OXYGEN
SENSOR (REAR)

AK200938

2

3

4

5

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9

1

10

14

15

16

17

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19

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22

23

24

25

26

27

11

12

13

AB

CONNECTOR: D-132

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-132(GR)

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-186

STEP 8. Check harness connector D-132 at PCM for
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 9.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 12.

AK200938

2

3

4

5

6

7

8

9

1

10

14

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21

22

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24

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27

11

12

13

AB

CONNECTOR: D-132

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-132(GR)

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-187

STEP 9. Check for harness damage between MFI relay
connector B-22X (terminal No. 1) and right bank heated
oxygen sensor (rear) connector C-14 (terminal No. 1).
NOTE: Check harness after checking intermediate connectors
E-114 and D-116. If intermediate connectors E-114 and D-116
are damaged, repair or replace them. Refer to GROUP 00E,
Harness Connector Inspection

P.00E-2

. Then go to Step 12.

Q: Is the harness wire in good condition?

YES : Go to Step 10.
NO : Repair it. Then go to Step 12.

AK200951

2 1

3

4

B-22X

AB

CONNECTOR: B-22X

HARNESS
CONNECTOR:
COMPONENT SIDE

AK201276

1

2

3

4

CONNECTOR: C-14

C-14(GR)

AB

HARNESS
CONNECTOR:
COMPONENT SIDE

RIGHT BANK
HEATED OXYGEN
SENSOR (REAR)

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-188

STEP 10. Check for harness damage between right bank
heated oxygen sensor (rear) connector C-14 (terminal No.
3) and PCM connector D-132 (terminal No. 24).
NOTE: Check harness after checking intermediate connector
E-114. If intermediate connector E-114 is damaged, repair or
replace it. Refer to GROUP 00E, Harness Connector Inspec-
tion

P.00E-2

. Then go to Step 12.

Q: Is the harness wire in good condition?

YES : Go to Step 11.
NO : Repair it. Then go to Step 12.

STEP 11. Check the trouble symptoms.
(1) Carry out a test drive with the drive cycle pattern. Refer to

GROUP 13A, Procedure 6

− Other Monitor

P.13Ab-2

.

(2) Read in the diagnostic trouble code (DTC).
Q: Is DTC P0141 set?

YES : Replace the PCM. Then go to Step 12.
NO : It can be assumed that this malfunction is intermittent.

Refer to GROUP 00, How to Use Troubleshooting/
Inspection Service Points

P.00-6

.

AK201276

1

2

3

4

CONNECTOR: C-14

C-14(GR)

AB

HARNESS
CONNECTOR:
COMPONENT SIDE

RIGHT BANK
HEATED OXYGEN
SENSOR (REAR)

AK200938

2

3

4

5

6

7

8

9

1

10

14

15

16

17

18

19

20

21

22

23

24

25

26

27

11

12

13

AB

CONNECTOR: D-132

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-132(GR)