Mitsubishi Montero (2004+). Manual - part 289

 

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Mitsubishi Montero (2004+). Manual - part 289

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-643

STEP 16. Check for leaks in the evaporative emission 
canister.
(1) Remove the evaporative emission canister. (Refer to 

GROUP 17, Evaporative Emission Canister and Fuel Tank 
Pressure Relief Valv

P.17-72

).

(2) Connect a hand vacuum pump to the vent nipple of the 

evaporative emission canister.

(3) Plug the other two nipples or loop a hose between them.
(4) Apply vacuum with the hand vacuum pump and confirm that 

the canister holds vacuum.

Q: Does the evaporative emission canister hold vacuum?

YES : Reinstall the evaporative emission canister. (Refer to 

GROUP 17, Evaporative Emission Canister and Fuel 
Tank Pressure Relief Valve 

P.17-72

). Go to Step 17         

.

NO :  Replace the evaporative emission canister. (Refer to 

GROUP 17, Evaporative Emission Canister and Fuel 
Tank Pressure Relief Valve 

P.17-72

). Go to Step 18         

.

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-644

STEP 17. Using scan tool MB991958, check evaporative 
emission system monitor test.

CAUTION

• To prevent damage to scan tool MB991958, always turn 

the ignition switch to the "LOCK" (OFF) position before 
connecting or disconnecting scan tool MB991958.

• During this test, the PCM automatically increases the 

engine speed to 1,600 r/min or greater. Check that the 
transmission is set to "P" position.

(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Erase the DTCs using scan tool MB991958. 
(4) Check that the fuel cap is securely closed. (Tighten until 

three clicks are heard).

(5) Start the engine.
(6) Select "System Test".
(7) Select "Evap Leak Mon".
(8) During this test, keep the accelerator pedal at the idling 

position.

(9) Keep the engine speed and engine load within the specified 

range. When the monitor test starts, the "In Progress" item 
on scan tool MB991958 will change from "NO" to "YES".

(10)Turn the ignition switch to the "LOCK" (OFF) position and 

disconnect scan tool MB991958.

Q: Is "Evap Leak Mon. Completed. Test Failed and DTCs 

Set" displayed on scan tool MB991958?
YES : 
Replace the PCM (Refer to 

P.13A-1014

). Then go to 

Step 18   .

NO <"Evap Leak Mon. Completed. Test Passed" is 
displayed on scan tool MB991958.> : 
The evaporative 

emission system is working properly at this time. Then 
go to Step 18.

NO <"Evap Leak Mon. Discontinued. Retest again from 
the first" is displayed on scan tool MB991958.> : 
The 

EVAP monitor has been interrupted during the test. 
Turn the ignition switch to the "LOCK" (OFF) position 
once, and repeat the monitoring from Step 17.

STEP 18. Perform the OBD-II drive cycle.
(1) Confirm the repair by performing the appropriate drive cycle  

(Refer to Diagnostic Function 

− OBD-ll Drive Cycle − 

Procedure 1 

− Evaporative Emission System Leak Monitor 

P.13A-4

).

(2) Read the diagnostic trouble code (DTC).
Q: Is DTC P0456 set?

YES : Repeat the troubleshooting from Step 1.
NO :  The procedure is complete.

AC306409AF

MB991911

MB991824

MB991827

Continue

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-645

13A

DTC P0461: Fuel Level Sensor Circuit Range/Performance

POWERTRAIN CONTROL
MODULE (PCM)

METER AND GAUGE

Fuel Level Sensor Circuit

8

17

1

2

7

2

BLA

C

K

BLA

C

K

YELLO

W

-

GREEN

G-03

MU802337

1 2 3

AK201147

72

FUEL LEVEL SENSOR

YELLO

W

-

GREEN

YELLO

W

-

GREEN

YELLO

W

-

GREEN

YELLO

W

-

GREEN

4

17

1

12 13 14

18

30

41

34

3

16

10

6 7

19

31

42

20

32

43

21

33

25

24

26

36

35

37

29

28

15

27

38

8 9

39 40

11

2

22

5

23

D-111

8

7

6

5

1 2 3 4

F-07

MU802609

11

1

9 10

13

2

12

3 4

7

5

14

6

8

E-113

61
656667686970 717273
74757677787980 8182
8384

858687

8889

62

6364

D-134

(MU803804)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-646

.

CIRCUIT OPERATION

• The fuel gauge drive signal is input in PCM (ter-

minal No. 72).

.

TECHNICAL DESCRIPTION

• Branch the drive signal from the fuel gauge cir-

cuit, and input it into PCM.

• The PCM detects the amount of fuel left in the 

fuel tank with this signal, and also controls the 
fuel level warning light.

.

DESCRIPTIONS OF MONITOR METHODS
Detect malfunction if change of fuel level sensor out-

put voltage is small when sum of fuel injection is 
large.

.

MONITOR EXECUTION
Continuous

.

MONITOR EXECUTION CONDITIONS (Other 
monitor and Sensor)

Other Monitor (There is no temporary DTC stored 

in memory for the item monitored below)

• Not applicable

Sensor (The sensor below is determined to be 

normal)

• Not applicable

.

AK201040 AB

CONNECTOR: G-03

G-03(B)

FUEL TANK TEMPERATURE SENSOR
(INTEGRATED IN FUEL 
LEVEL SENSOR)

AK201038

CONNECTOR: D-134

AD

PCM

D-134(GR)

AK201055

CONNECTOR: D-111

D-111

AB

AK304350

F-07 (B)

AB

CONNECTOR: F-07

AK201053

E-113

AB

CONNECTOR: E-113

 

 

 

 

 

 

 

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