Mitsubishi Montero (2002-2004). Manual - part 583

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-29

STEP 9. Check connector B-48 at the barometric pressure 
sensor and connector D-135 at PCM for damage.
Q: Is the connector in good condition?

YES : Repair harness wire between barometric pressure 

sensor connector B-48 (terminal No. 1) and PCM 
connector D-135 (terminal No. 97) because of open 
circuit or harness damage. Then go to Step 18.

NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 18.

AK200937

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AB

HARNESS 
CONNECTOR: 
COMPONENT SIDE

CONNECTOR: B-48

B-48(B)

AK200947

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CONNECTOR: D-135

HARNESS CONNECTOR: 
COMPONENT SIDE

AB

PCM

D-135(GR)

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-30

STEP 10. Check connector B-48 at the barometric pressure 
sensor and connector D-135 at PCM for damage.
Q: Is the connector in good condition?

YES : Go to Step 11.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 18.

AK200937

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5

1

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AB

HARNESS 
CONNECTOR: 
COMPONENT SIDE

CONNECTOR: B-48

B-48(B)

AK200947

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CONNECTOR: D-135

HARNESS CONNECTOR: 
COMPONENT SIDE

AB

PCM

D-135(GR)

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-31

STEP 11. Check for short circuit to ground between 
barometric pressure sensor connector B-48 (terminal No. 
1) and PCM connector D-135 (terminal No. 97).
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.

AK200937

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5

1

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AB

HARNESS 
CONNECTOR: 
COMPONENT SIDE

CONNECTOR: B-48

B-48(B)

AK200947

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CONNECTOR: D-135

HARNESS CONNECTOR: 
COMPONENT SIDE

AB

PCM

D-135(GR)

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-32

STEP 12. Measure the ground voltage at barometric 
pressure sensor connector B-48 by backprobing.
(1) Do not disconnect the connector B-48.
(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal No. 5 and ground by 

backprobing.

• Voltage should be 0.5 volt or less.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the voltage normal?

YES : Go to Step 15.
NO :  Go to Step 13.

STEP 13. Check connector B-48 at the barometric pressure 
sensor and connector D-134 at PCM for damage.
Q: Is the connector in good condition?

YES : Go to Step 14.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 18.

AK200937

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AB

HARNESS 
CONNECTOR: 
COMPONENT SIDE

CONNECTOR: B-48

B-48(B)

AKX01517

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AJ

B-48 HARNESS 
CONNECTOR: 
HARNESS SIDE

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HARNESS 
CONNECTOR: 
COMPONENT SIDE

CONNECTOR: B-48

B-48(B)

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CONNECTOR: D-134

AB

PCM

D-134(GR)

HARNESS CONNECTOR: 
COMPONENT SIDE