Mitsubishi Montero (2004+). Manual - part 246

 

  Index      Mitsubishi     Mitsubishi Montero - service repair manual 2004 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  244  245  246  247   ..

 

 

Mitsubishi Montero (2004+). Manual - part 246

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-471

STEP 1. Using scan tool MB991958, check data list item 22: 
Crankshaft Position Sensor.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Start the engine and run at idle.
(3) Set scan tool MB991958 to the data reading mode for item 

22, Crankshaft Position Sensor.

• The tachometer and engine speed indicated on the scan 

tool should much.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?

YES : It can be assumed that this malfunction is intermittent. 

Refer to IN GROUP 00, How to Use 
Troubleshooting/Inspection Service Points 

P.00-6

.

NO :  Go to Step 2.

AK302970

AB

MB991911

MB991824

MB991827

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-472

STEP 2. Using the oscilloscope, check the crankshaft 
position sensor.
(1) Disconnect the crankshaft position sensor connector, and 

connect the test harness special tool (MD998478) in 
between.

(2) Connect the oscilloscope probe to crankshaft position 

sensor connector terminal No. 2 (black clip of special tool).
NOTE: Connect the oscilloscope plobe to terminal No. 70 
by backprobing when measuring with the PCM connector.

(3) Start the engine and run at idle.

(4) Check the waveform.

• The waveform should show a pattern similar to the illus-

tration.

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

YES : Go to Step 3.
NO :  Go to Step 5.

AK200962

1

2

3

AB

CONNECTOR: B-36

B-36(B)

CRANKSHAFT
POSITION
SENSOR

HARNESS 
CONNECTOR: 
COMPONENT SIDE

AK102979AB

MD998478

1 2

3

CRANKSHAFT POSITION
SENSOR CONNECTOR

OSCILLOSCOPE

AKX01559AB

NORMAL WAVEFORM

2 ENGINE REVOLUTIONS

5 V

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-473

STEP 3. Check connector B-36 at the crankshaft position 
sensor for damage.
Q: Is the connector in good condition?

YES : Go to Step 4.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 21.

STEP 4. Using scan tool MB991958, check data list item 22: 
Crankshaft Position Sensor.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to the data reading mode for item 

22, Crankshaft Position Sensor.

• The tachometer and engine speed indicated on the scan 

tool should match.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?

YES : It can be assumed that this malfunction is intermittent. 

Refer to GROUP 00, How to Use 
Troubleshooting/Inspection Service Points 

P.00-6

.

NO :  Replace the PCM. Then go to Step 21.

AK200962

1

2

3

AB

CONNECTOR: B-36

B-36(B)

CRANKSHAFT
POSITION
SENSOR

HARNESS 
CONNECTOR: 
COMPONENT SIDE

AK302970

AB

MB991911

MB991824

MB991827

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-474

STEP 5. Check connector B-36 at the crankshaft position 
sensor for damage.
Q: Is the connector in good condition?

YES : Go to Step 6.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 21.

AK200962

1

2

3

AB

CONNECTOR: B-36

B-36(B)

CRANKSHAFT
POSITION
SENSOR

HARNESS 
CONNECTOR: 
COMPONENT SIDE

 

 

 

 

 

 

 

Content   ..  244  245  246  247   ..