Mitsubishi Lancer Evolution X. Manual - part 236

 

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Mitsubishi Lancer Evolution X. Manual - part 236

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-9

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TROUBLESHOOTING STRATEGY

M1131150002188

NOTE: If a DTC is erased, its "freeze frame" data will 
also be erased and system readiness test status will 
be reset. Store the "freeze frame" data before eras-
ing the DTC.
Use these steps to plan your diagnostic strategy. If 
you follow them carefully, you will be sure to have 
exhausted most of the possible ways to find an MFI 
fault.
1. Gather as much information as possible about the 

complaint from the customer.

2. Verify that the condition described by the 

customer exists.

3. Check the vehicle for any MFI Diagnostic Trouble 

Code (DTC).

4. If you cannot verify the condition and there are no 

DTCs, the malfunction is intermittent. For 
information on how to cope with intermittent 
malfunctions, refer to GROUP 00, How to Use 
Troubleshooting/Inspection Service Points − How 

to Cope with Intermittent Malfunction

P.00-15

.

5. If you can verify the condition but there are no 

DTCs, or the system cannot communicate with 
the scan tool, refer to the trouble symptom 
classification table.

6. If there is a DTC, store the number of the code, 

then erase the code from the memory using the 
scan tool.

7. Reconfirm the malfunction symptom and carry out 

a test drive with the drive cycle pattern.

8. If DTC is set again, carry out an inspection with 

appropriate diagnostic trouble code procedures.

9. If DTC is not set again, the malfunction is 

intermittent. For information on how to cope with 
intermittent malfunctions, refer to GROUP 00, 
How to Use Troubleshooting/Inspection Service 
Points − How to Cope with Intermittent 

Malfunctions 

P.00-15

.

10.After repairs are completed, conduct a road test 

duplicating the complaint set conditions to confirm 
the malfunction has been corrected.

NOTE:  If the engine control module (ECM) is 
replaced, Immobilizer Encrypted Code Registration 
should be carried out, 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

.

DIAGNOSTIC FUNCTION

M1131155503738

.

MALFUNCTION INDICATOR LAMP (SERVICE 
ENGINE SOON OR CHECK ENGINE LAMP)

Among the on-board diagnostic items, Malfunction Indicator 
Lamp (SERVICE ENGINE SOON or Check Engine Lamp) illu-
minates to notify the driver of an emission control malfunction.
However, when an irregular signal returns to normal and the 
engine control module judges that it has returned to normal, the 
Malfunction Indicator Lamp (SERVICE ENGINE SOON or 
Check Engine Lamp) will switch off. 
There are two methods for checking the Malfunction Indicator 
Lamp (SERVICE ENGINE SOON or Check Engine Lamp) burn 
out: When the ignition switch is in ON position, the Malfunction 
Indicator Lamp (SERVICE ENGINE SOON or Check Engine 
Lamp) is illuminated, and then extinguished few seconds later. 
When the ignition switch is in ON position and the engine 
starts, the Malfunction Indicator Lamp (SERVICE ENGINE 
SOON or Check Engine Lamp) is extinguished.
NOTE: When the Transmission Control Module (TCM) detects 
malfunctions related to the TC-SST, the Malfunction indicator 
Lamp (SERVICE ENGINE SOON or Check Engine Lamp) is 
also illuminated.

.

AK800001AB

Malfunction
indicator lamp
(SERVICE 
ENGINE 
SOON or check
engine lamp)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-10

Items Indicated by the Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check 
Engine Lamp) 

DTC

ITEM

P0010

Intake engine oil control valve circuit

P0011

Intake variable valve timing system target error

P0013

Exhaust engine oil control valve circuit

P0014

Exhaust variable valve timing system target error

P0016

Crankshaft/camshaft (intake) position sensor phase problem

P0017

Crankshaft/camshaft (exhaust) position sensor phase problem

P0031

Heated oxygen sensor (front) heater circuit low

P0032

Heated oxygen sensor (front) heater circuit high

P0037

Heated oxygen sensor (rear) heater circuit low

P0038

Heated oxygen sensor (rear) heater circuit high

P0069

Abnormal correlation between manifold absolute pressure sensor and barometric pressure 
sensor

P0096*

1

Intake air temperature circuit range/performance problem (sensor 2)

P0097*

1

Intake air temperature circuit low input (sensor 2)

P0098*

1

Intake air temperature circuit high input (sensor 2)

P0101*

1

Mass airflow circuit range/performance problem

P0102*

1

Mass airflow circuit low input

P0103*

1

Mass airflow circuit high input

P0106

Manifold absolute pressure circuit range/performance problem

P0107

Manifold absolute pressure circuit low input

P0108

Manifold absolute pressure circuit high input

P0111*

1

Intake air temperature circuit range/performance problem (sensor 1)

P0112*

1

Intake air temperature circuit low input (sensor 1)

P0113*

1

Intake air temperature circuit high input (sensor 1)

P0116*

1

Engine coolant temperature circuit range/performance problem

P0117*

1

Engine coolant temperature circuit low input

P0118*

1

Engine coolant temperature circuit high input

P0122*

1

Throttle position sensor (main) circuit low input

P0123*

1

Throttle position sensor (main) circuit high input

P0125*

1

Insufficient coolant temperature for closed loop fuel control

P0128

Coolant thermostat (coolant temperature below thermostat regulating temperature)

P0131

Heated oxygen sensor (front) circuit low voltage

P0132

Heated oxygen sensor (front) circuit high voltage

P0133

Heated oxygen sensor (front) circuit slow response

P0134*

1

Heated oxygen sensor (front) circuit no activity detected

P0137

Heated oxygen sensor (rear) circuit low voltage

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-11

P0138

Heated oxygen sensor (rear) circuit high voltage

P0139

Heated oxygen sensor (rear) circuit slow response

P0140

Heated oxygen sensor (rear) circuit no activity detected

P0171

System too lean

P0172

System too rich

P0181

Fuel tank temperature sensor circuit range/performance

P0182

Fuel tank temperature sensor circuit low input

P0183

Fuel tank temperature sensor circuit high input

P0201

Injector circuit − cylinder 1

P0202

Injector circuit − cylinder 2

P0203

Injector circuit − cylinder 3

P0204

Injector circuit − cylinder 4

P0222*

1

Throttle position sensor (sub) circuit low input

P0223*

1

Throttle position sensor (sub) circuit high input

P0234

Turbocharger wastegate system malfunction

P0243

Turbocharger wastegate solenoid 1 circuit

P0247

Turbocharger wastegate solenoid 2 circuit

P0300*

2

Random/multiple cylinder misfire detected

P0301*

2

Cylinder 1 misfire detected

P0302*

2

Cylinder 2 misfire detected

P0303*

2

Cylinder 3 misfire detected

P0304*

2

Cylinder 4 misfire detected

P0327

Knock sensor circuit low

P0328

Knock sensor circuit high

P0335*

1

Crankshaft position sensor circuit

P0340*

1

Intake camshaft position sensor circuit

P0365*

1

Exhaust camshaft position sensor circuit

P0420

Warm up catalyst efficiency below threshold

P0441

Evaporative emission control system incorrect purge flow

P0442

Evaporative emission control system leak detected (small leak)

P0443

Evaporative emission control system purge control valve circuit

P0446

Evaporative emission control system vent control circuit

P0450

Evaporative emission control system pressure sensor malfunction

P0451

Evaporative emission control system pressure sensor range/performance

P0452

Evaporative emission control system pressure sensor low input

P0453

Evaporative emission control system pressure sensor high input

P0455

Evaporative emission control system leak detected (gross leak)

P0456

Evaporative emission control system leak detected (very small leak)

DTC

ITEM

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-12

P0461

Fuel level sensor (main) circuit range/performance

P0462

Fuel level sensor circuit low input

P0463

Fuel level sensor circuit high input

P0500*

1

Vehicle speed signal malfunction

P0506

Idle control system RPM lower than expected

P0507

Idle control system RPM higher than expected

P050B

Ignition timing retard insufficient

P0551

Power steering pressure switch circuit range/performance

P0554

Power steering pressure switch circuit intermittent

P0603*

1

EEPROM malfunction

P0606*

1

Engine control module main processor malfunction

P0630*

1

Vehicle Identification Number (VIN) malfunction

P0638*

1

Throttle actuator control motor circuit range/performance

P0642*

1

Throttle position sensor power supply

P0657*

1

Throttle actuator control motor relay circuit malfunction

P1233*

1

Throttle position sensor (main) plausibility

P1234*

1

Throttle position sensor (sub) plausibility

P1235*

1

Mass airflow sensor plausibility

P1236*

1

A/D converter

P1237*

1

Accelerator pedal position sensor plausibility

P1238*

1

Mass airflow sensor plausibility (torque monitor)

P1239*

1

Engine RPM plausibility

P1241*

1

Torque monitor

P1506

Idle control system RPM lower than expected at low temperature

P1507

Idle control system RPM higher than expected at low temperature

P1590*

1

TCM to ECM communication error in torque reduction request <TC-SST>

P1603*

1

Battery backup circuit malfunction

P1676*

1

Variant coding

P2066

Fuel level sensor (sub) circuit range/performance

P2096

Post catalyst fuel trim system too lean

P2097

Post catalyst fuel trim system too rich

P2100*

1

Throttle actuator control motor circuit (open)

P2101*

1

Throttle actuator control motor magneto malfunction

P2122*

1

Accelerator pedal position sensor (main) circuit low input

P2123*

1

Accelerator pedal position sensor (main) circuit high input

P2127*

1

Accelerator pedal position sensor (sub) circuit low input

DTC

ITEM

 

 

 

 

 

 

 

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