Mitsubishi Lancer Evolution X. Manual - part 305

 

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Mitsubishi Lancer Evolution X. Manual - part 305

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-285

STEP 8. Check for short circuit to ground between fuel 
tank temperature sensor connector D-22 (terminal No. 3) 
and ECM connector B-10 (terminal No. 115).
NOTE: Check harness after checking intermediate connector 
C-47. If intermediate connector is damaged, repair or replace it. 
Refer to GROUP 00E, Harness Connector Inspection 

P.00E-2

Then go to Step 11.
Q: Is the harness wire in good condition?

YES : Replace the ECM. When the ECM is replaced, 

register the ID code. Refer to GROUP 42B, ID Code 
Registration Necessity Judgment Table <Vehicles 
with KOS> 

P.42B-11

 or GROUP 42C, ID Codes 

Registration Judgment Table <Vehicles with WCM> 

P.42C-9

. Then go to Step 11.

NO :  Repair it. Then go to Step 11.

STEP 9. Check harness connector B-10 at ECM for 
damage.
Q: Is the harness 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 11.

STEP 10. Check for harness damage between fuel tank 
temperature sensor connector D-22 (terminal No. 3) and 
ECM connector B-10 (terminal No. 115).
NOTE: Check harness after checking intermediate connector 
C-47. If intermediate connector is damaged, repair or replace it. 
Refer to GROUP 00E, Harness Connector Inspection 

P.00E-2

Then go to Step 11.
Q: Is the harness wire in good condition?

YES : Replace the ECM. When the ECM is replaced, 

register the ID code. Refer to GROUP 42B, ID Code 
Registration Necessity Judgment Table <Vehicles 
with KOS> 

P.42B-11

 or GROUP 42C, ID Codes 

Registration Judgment Table <Vehicles with WCM> 

P.42C-9

. Then go to Step 11.

NO :  Repair it. Then go to Step 11.

STEP 11. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to 

Diagnostic Function − OBD-II Drive Cycle − Pattern 13 

P.13A-9

.

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

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

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-286

DTC P0182: Fuel Tank Temperature Sensor Circuit Low Input

1

2 3

4

5

AK604240

71 72 73 74 75 76 77 78 79 80 81 82

83 84 85 86 87 88 89 90 91 92 93 94

95 96 97 98 99

100 101 102 103 104

112 113 114

109

108

107

110 111

115 116

106

105

118

117

2

8

7

6

5

4

3

11

21

20

19

18

17

16

15

14

13

12

9

22

1

10

AC

FUEL TANK TEMPERATURE  SENSOR  CIRCUIT

6

3

2

1

BLA

CK

D-22

(MU802058)

115

FUEL TANK TEMPERATURE
SENSOR (INTEGRATED IN FUEL
PUMP MODULE)

5 V

WHITE-BLA

CK

WHITE-BLA

CK

B-10

C-47

FROM
COMBNATION
METER

ENGINE
CONTROL
MODULE

AK704235 AB

Connector: B-10

ECM

B-10 (GR)

AK704252

Connector: C-47

C-47

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-287

.

CIRCUIT OPERATION

• 5-volt voltage is applied to the fuel tank tempera-

ture sensor output terminal (terminal No. 3) from 
the ECM (terminal No. 115) via the resistor in the 
ECM.

• The fuel tank temperature sensor output voltage 

increases when the resistance increases and 
decreases when the resistance decreases. The 
ground terminal (terminal No. 1) is grounded to 
the vehicle body.

.

TECHNICAL DESCRIPTION

• The fuel tank temperature sensor converts the 

fuel tank temperature to a voltage.

• The ECM detects the fuel tank temperature with 

this output voltage.

.

DESCRIPTIONS OF MONITOR METHODS

Fuel tank temperature sensor output voltage is out of 

specified range.

.

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

.

AK704253 AB

Fuel pump module (incorporating 
fuel level sensor (main) and 
fuel tank temperature sensor)

Connector: D-22

D-22 (GR)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-288

DTC SET CONDITIONS
Logic Flow Chart

.

Check Condition

• 2 seconds or more have passed since the engine 

starting sequence was completed.

Judgement Criterion

• Sensor output voltage has continued to be 0.1 

volt or lower for 2 seconds.

.

FAIL-SAFE AND BACKUP FUNCTION

• None

.

OBD-II DRIVE CYCLE PATTERN

Refer to Diagnostic Function − OBD-II Drive Cycle − 

Pattern 23 

P.13A-9

.

.

TROUBLESHOOTING HINTS (The most 
likely causes for this code to be set are:)

• Fuel tank temperature sensor failed.
• Shorted fuel tank temperature sensor circuit or 

connector damage.

• ECM failed. 

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.
• MB991827: USB Cable
• MB991910: Main Harness A

AK700478

Good

Malfunction

End

No

No

No

No

Yes

Yes

Yes

Yes

Continuous

failure for 2secs

Monitoring
conditions

Start

Output voltage

< 0.1V

Output voltage

> 4.6V

 

 

 

 

 

 

 

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