Mitsubishi Montero (2004+). Manual — part 298

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-679

STEP 8. Measure the power supply voltage at PCM harness
side connector D-136.
(1) Disconnect the connector D-136 and measure at the

harness side.

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

(3) Measure the voltage between terminal No. 132 and ground.

• Voltage should be battery positive voltage.

(4) Turn the ignition switch to the "LOCK"(OFF) position.
Q: Is battery positive voltage (approximately 12 volts)

present?
YES : Go to Step 11.
NO : Go to Step 9.

AK201170

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CONNECTOR: D-136

PCM

D-136(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AB

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AK201448

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D-136 HARNESS
CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-680

STEP 9. Check for open circuit and short circuit to ground
between throttle actuator control motor relay connector
B-23X (terminal No. 1) and PCM connector D-136 (terminal
No. 132).
Q: Is the harness wire in good condition?

YES : Go to Step 10.
NO : Repair it. Then go to Step 17.

AK201172

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B-23X

AB

CONNECTOR: B-23X

HARNESS
CONNECTOR:
COMPONENT SIDE

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CONNECTOR: D-136

PCM

D-136(GR)

HARNESS CONNECTOR:
COMPONENT SIDE

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-681

STEP 10. Check for harness damage between MFI relay
connector B-22X (terminal No. 1) and throttle actuator
control motor relay connector B-23X (terminal No. 4).
Q: Is the harness wire in good condition?

YES : Repair harness wire between throttle actuator control

motor relay connector B-23X (terminal No. 2) and
PCM connector D-132 (terminal No. 15) because of
harness damage. Then go to Step 17.

NO : Repair it. Then go to Step 17.

STEP 11. Check connector D-132 and D-136 at PCM for
damage.
Q: Is the connector in good condition?

YES : Go to Step 12.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 17.

AK200951

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B-22X

AB

CONNECTOR: B-22X

HARNESS
CONNECTOR:
COMPONENT SIDE

AK201172

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B-23X

AB

CONNECTOR: B-23X

HARNESS
CONNECTOR:
COMPONENT SIDE

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CONNECTORS: D-132, D-136

D-132 HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-132(GR) D-136(GR)

AB

D-136 HARNESS CONNECTOR:
COMPONENT SIDE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-682

STEP 12. Check the throttle actuator control motor.
(1) Disconnect the connector B-05.

(2) Measure the resistance between throttle actuator control

motor side connector terminal No. 5 and No. 6.

Standard value: 0.3

− 100 ohms

Q: Is the measured resistance between 0.3 and 100 ohms?

YES : Go to Step 13.
NO : Replace the throttle body ASSY. Then go to Step 17.

STEP 13. Check connector B-05 at throttle actuator control
motor 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 17.

AK201174

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B-05(B)

CONNECTOR: B-05

HARNESS
CONNECTOR:
COMPONENT SIDE

AB

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AK201513AB

THROTTLE ACTUATOR
CONTROL MOTOR
SIDE CONNECTOR

AK201174

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B-05(B)

CONNECTOR: B-05

HARNESS
CONNECTOR:
COMPONENT SIDE

AB