Mitsubishi Montero (2004+). Manual — part 247

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

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STEP 6. Measure the sensor supply voltage at crankshaft
position sensor harness side connector B-36.
(1) Disconnect the connector B-36 and measure at the harness

side.

(2) Turn the ignition switch to the "ON" position.

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

• Voltage should be between 4.8 and 5.2 volts.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 4.8 and 5.2 volts?

YES : Go to Step 11.
NO : Go to Step 7.

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AB

CONNECTOR: B-36

B-36(B)

CRANKSHAFT
POSITION
SENSOR

HARNESS
CONNECTOR:
COMPONENT SIDE

AKX01416 AQ

2 1

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B-36 HARNESS
CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-476

STEP 7. Measure the sensor supply voltage at PCM
connector D-134 by backprobing.
(1) Do not disconnect the PCM connector D-134.
(2) Disconnect the crankshaft position sensor connector B-36.
(3) Turn the ignition switch to the "ON" position.

(4) Measure the voltage between terminal No. 70 and ground

by backprobing.

• Voltage should be between 4.8 and 5.2 volts.

(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage between 4.8 and 5.2 volts?

YES : Go to Step 8.
NO : Go to Step 9.

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

YES : Repair it because of open circuit between crankshaft

position sensor connector B-36 (terminal No. 2) and
PCM connector D-134 (terminal No. 70). Then go to
Step 21.

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

Connector Inspection

P.00E-2

. Then go to Step 21.

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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

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CONNECTOR: D-134

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PCM

D-134(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-477

STEP 9. Check connector D-134 at PCM for damage.
Q: Is the 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 21.

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CONNECTOR: D-134

AB

PCM

D-134(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-478

STEP 10. Check for short circuit to ground between
crankshaft position sensor connector B-36 (terminal No. 2)
and PCM connector D-134 (terminal No. 70).
Q: Is the harness wire in good condition?

YES : Replace the PCM. Then go to Step 21.
NO : Repair it. Then go to Step 21.

AK200962

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AB

CONNECTOR: B-36

B-36(B)

CRANKSHAFT
POSITION
SENSOR

HARNESS
CONNECTOR:
COMPONENT SIDE

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CONNECTOR: D-134

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PCM

D-134(GR)

HARNESS CONNECTOR:
COMPONENT SIDE