Mitsubishi Montero (2002-2004). Manual — part 651

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-301

STEP 6. Measure the sensor supply voltage at PCM
connector D-134 by backprobing.
(1) Do not disconnect the PCM connector D-134.
(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal No. 81 and ground

by backprobing.

• When fuel tank temperature is 0°C (32°F), voltage

should be 2.7 and 3.1 volts.

• When fuel tank temperature is 20°C (68°F), voltage

should be 2.1 and 2.5 volts.

• When fuel tank temperature is 40°C (104°F), voltage

should be 1.6 and 2.0 volts.

• When fuel tank temperature is 80°C (176°F), voltage

should be 0.8 and 1.2 volts.

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

YES : Go to Step 7.
NO : Go to Step 8.

STEP 7. Check connector D-134 at PCM for damage.
Q: Is the connector in good condition?

YES : Check connector D-111 and F-07 at intermediate

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

P.00E-2

. If intermediate connector are in

good condition, repair harness wire between fuel level
sensor connector G-03 (terminal No. 3) and PCM
connector D-134 (terminal No. 81) because of open
circuit. Then go to Step 12.

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

Connector Inspection

P.00E-2

. Then go to Step 12.

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CONNECTOR: D-134

AB

PCM

D-134(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

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D-134 HARNESS
CONNECTOR:
HARNESS SIDE

AB

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CONNECTOR: D-134

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PCM

D-134(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-302

STEP 8. Check connector D-134 at PCM for damage.
Q: Is the 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.

STEP 9. Check for short circuit to ground between fuel
level sensor connector G-03 (terminal No. 3) and PCM
connector D-134 (terminal No. 81).
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.

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CONNECTOR: D-134

AB

PCM

D-134(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

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CONNECTOR: G-03

G-03(B)

HARNESS
CONNECTOR:
COMPONENT SIDE

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CONNECTOR: D-134

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PCM

D-134(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-303

STEP 10. Check connector D-134 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 12.

STEP 11. Check for harness damage between fuel tank
temperature sensor connector G-03 (terminal No. 3) and
PCM connector D-134 (terminal No. 81).
NOTE: Check harness after checking intermediate connector
D-111, E-113 and F-07. If intermediate connector are damaged,
repair or replace it. Refer to GROUP 00E, Harness Connector
Inspection

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.

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CONNECTOR: D-134

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PCM

D-134(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AK200959

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AB

CONNECTOR: G-03

G-03(B)

HARNESS
CONNECTOR:
COMPONENT SIDE

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CONNECTOR: D-134

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PCM

D-134(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-304

STEP 12. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to

GROUP 13A, Procedure 6

− Other Monitor

P.13Ab-2

.

(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0181 set?

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