Mitsubishi Lancer Evolution X. Manual - part 324

 

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Mitsubishi Lancer Evolution X. Manual - part 324

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-361

DTC SET CONDITIONS
Logic Flow Chart

Check Conditions

• Engine is being cranked.
• Battery positive voltage is between 10 and 16.5 

volts.

Judgement Criteria

• The turbocharger wastegate solenoid 2 coil surge 

voltage (battery positive voltage + 2 volts) is not 
detected for 0.2 second.

• The ECM monitors for this condition once during 

the drive cycle.

Check Conditions

• Battery positive voltage is between 10 and 16.5 

volts.

• ON duty cycle of the turbocharger wastegate 

solenoid 2 is between 10 and 90 percent.

• 1 second or more has elapsed after the above 

mentioned conditions have been met. 

Judgement Criterion

• The turbocharger wastegate solenoid 2 coil surge 

voltage (battery positive voltage + 2 volts) is not 
detected for 1 second after the turbocharger 
wastegate solenoid 2 is turned off.

.

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:)

• Turbocharger wastegate solenoid 2 failed.
• Open or shorted turbocharger wastegate sole-

noid 2 circuit, harness damage, or connector 
damage.

• ECM failed. 

End

No

No

Was surge voltage 

(> VB + 2V) detected?

Good

AK604339

Malfunction

Start

Yes

Yes

Monitoring
conditions

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-362

DIAGNOSIS

Required Special Tools:

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

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

• MB992110: Power Plant ECU Check Harness

STEP 1. Using scan tool MB991958, check actuator test 
item 20: Turbocharger Wastegate Solenoid.

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 actuator test mode for item 

20, Turbocharger wastegate solenoid.

• An operation sound should be heard and vibration 

should be felt when the turbocharger wastegate sole-
noid 2 is operated.

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

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

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

Cope with Intermittent Malfunctions 

P.00-15

.

NO :  Go to Step 2.

STEP 2. Check harness connector A-08 at the 
turbocharger wastegate solenoid 2 for damage.
Q: Is the harness connector in good condition?

YES : Go to Step 3.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 10.

AC608435

Data link connector

MB991827

MB991824

MB991910

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-363

STEP 3. Check the turbocharger wastegate solenoid 2.
(1) Disconnect the turbocharger wastegate solenoid 2 

connector A-08.

(2) Measure the resistance between turbocharger wastegate 

solenoid 2 side connector terminal No. 1 and No. 2.

Standard value: 29 − 35 Ω [at 20° C (68° F)]

Q: Is the measured resistance between 29 and 35 Ω [at 

20° C (68° F)]?
YES : Go to Step 4.
NO :  Replace the turbocharger wastegate solenoid 2. Then 

go to Step 10.

STEP 4. Measure the power supply voltage at turbocharger 
wastegate solenoid 2 harness side connector A-08.
(1) Disconnect the connector A-08 and measure at the harness 

side.

(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 1 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 6.
NO :  Go to Step 5.

STEP 5. Check harness connector A-34X at MFI relay for 
damage.
Q: Is the harness connector in good condition?

YES : Repair harness wire between MFI relay connector 

A-34X (terminal No. 2) and turbocharger wastegate 
solenoid 2 connector A-08 (terminal No. 1) because of 
open circuit or short circuit to ground. Then go to Step 
10.

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

Connector Inspection 

P.00E-2

. Then go to Step 10.

STEP 6. Check harness connector B-09 at the ECM for 
damage.
Q: Is the harness connector in good condition?

YES : Go to Step 7.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 10.

1 2

AK704410

Turbocharger wastegate
solenoid 2 connector

AB

AK704412

1

2

A-08 harness 
connector: 
component side

AB

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-364

STEP 7. Measure the power supply voltage at ECM 
connector B-09 by using power plant ECU check harness 
special tool MB992110.
(1) Disconnect all ECM connectors. Connect the power plant 

ECU check harness special tool MB992110 between the 
separated connectors.

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

(3) Measure the voltage between terminal No. 53 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 8.
NO :  Check harness connector A-13 at intermediate 

connector for damage, and repair or replace as 
required. Refer to GROUP 00E, Harness Connector 
Inspection 

P.00E-2

. If intermediate connector is in 

good condition, repair harness wire between 
turbocharger wastegate solenoid 2 connector A-08 
(terminal No. 2) and ECM connector B-09 (terminal 
No. 53) because of open circuit or short circuit to 
ground. Then go to Step 10.

STEP 8. Check for harness damage between MFI relay 
connector A-34X (terminal No. 2) and turbocharger 
wastegate solenoid 2 connector A-08 (terminal No. 1).
Q: Is the harness wire in good condition?

YES : Go to Step 9.
NO :  Repair it. Then go to Step 10.

AK604040

ECM

AB

Body side harness 

MB992110

AK704411

16 15 14 13 12 11 10 9 8 7 6 5 4 3

2

1

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49

AB

Power plant ECU
check harness connector

 

 

 

 

 

 

 

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