Mitsubishi Montero (2002-2004). Manual - part 758

TSB Revision

SYMPTOM PROCEDURES

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STEP 6. Measure the backup power supply voltage at PCM 
harness side connector D-133.
(1) Disconnect the connector D-133 and measure at the 

harness side.

(2) Measure the voltage between terminal No.58 and ground.

• Voltage should be battery positive voltage.

Q: Is battery positive voltage (approximately 12 volts) 

present?
YES : Go to Step 7.
NO :  Check harness connector A-03 at intermediate 

connector for damage, and repair or replace as 
required. Refer to GROUP 00E, Harness Connector 
Inspection 

P.00E-2

. If intermediate connector A-03 is 

in good condition, repair an open circuit between 
fusible link (5) and PCM connector D-133 (terminal 
No. 58). Then confirm that the malfunction symptom 
is eliminated.

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CONNECTOR: D-133

HARNESS CONNECTOR: 
COMPONENT SIDE

PCM

D-133(GR)

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D-133 HARNESS 
CONNECTOR: 
COMPONENT SIDE

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TSB Revision

SYMPTOM PROCEDURES

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STEP 7. Check the continuity at PCM harness side 
connector D-133.
(1) Disconnect the connector D-133 and measure at the 

harness side.

(2) Check for the continuity between terminal No. 33, No. 42 

and ground.

• Should be less than 2 ohms.

Q: Is the continuity normal?

YES : Go to Step 8.
NO :  Check harness connector D-14 at intermediate 

connector for damage, and repair or replace as 
required. Refer to GROUP 00E, Harness Connector 
Inspection 

P.00E-2

. If intermediate connector D-14 is 

in good condition, repair an open circuit or harness 
damage between PCM connector D-133 (terminal No. 
33, No. 42) and ground. Then confirm that the 
malfunction symptom is eliminated.

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CONNECTOR: D-133

HARNESS CONNECTOR: 
COMPONENT SIDE

PCM

D-133(GR)

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AK201377

D-133 HARNESS 

CONNECTOR: 

COMPONENT SIDE

AK201377AB

TSB Revision

SYMPTOM PROCEDURES

13Ad-83

STEP 8. Measure the power supply voltage at PCM harness 
side connector D-133.
(1) Disconnect the connector D-133 and measure at the 

harness side.

(2) Measure the voltage between terminal No.57 and ground.

• Voltage should be battery positive voltage.

Q: Is battery positive voltage (approximately 12 volts) 

present?
YES : Go to Step 9.
NO :  Repair an open circuit between MFI relay connector 

B-22X (terminal No. 4) and PCM connector D-133 
(terminal No. 57). Then confirm that the malfunction 
symptom is eliminated.

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AB

CONNECTOR: D-133

HARNESS CONNECTOR: 
COMPONENT SIDE

PCM

D-133(GR)

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D-133 HARNESS 
CONNECTOR: 
COMPONENT SIDE

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TSB Revision

SYMPTOM PROCEDURES

13Ad-84

STEP 9. Measure the power supply voltage at PCM harness 
side connector D-133.
(1) Disconnect the connector D-133 and measure at the 

harness side.

(2) Using a jumper wire, connect terminal No. 57 to ground.

(3) Measure the voltage between terminal No. 34, No. 43 and 

ground.

• Voltage should be battery positive voltage.

Q: Is battery positive voltage (approximately 12 volts) 

present?
YES : Replace the PCM. Then confirm that the malfunction 

symptom is eliminated.

NO :  Check harness connector D-116 at intermediate 

connector for damage, and repair or replace as 
required. Refer to GROUP 00E, Harness Connector 
Inspection 

P.00E-2

. If intermediate connector D-116 

is in good condition, repair an open circuit between 
MFI relay connector B-22X (terminal No. 1) and PCM 
connector D-133 (terminal No. 34, No. 43). Then 
confirm that the malfunction symptom is eliminated.

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CONNECTOR: D-133

HARNESS CONNECTOR: 
COMPONENT SIDE

PCM

D-133(GR)

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D-133 HARNESS CONNECTOR: 
COMPONENT SIDE

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