Mitsubishi Galant (2004+). Manual — part 797
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-5
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TROUBLESHOOTING STRATEGY
M1131150000609
NOTE: If a DTC is erased, its "freeze frame" data will
be also erased and the system readiness test status
will be reset. Store the "freeze frame" data before
erasing 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
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, record 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 Malfunction
10.After repairs are completed, conduct a road test
duplicating the complaint set conditions to confirm
the malfunction has been corrected.
NOTE: If the powertrain control module (PCM) is
replaced, Immobilizer Encrypted Code Registration
should be carried out, Refer to GROUP 54A, Ignition
Switch
−
On-vehicle Service
−
Immobilizer Encrypted
.
DIAGNOSTIC FUNCTION
M1131155500267
.
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
powertrain control module judges that it has returned to normal,
the Malfunction Indicator Lamp (SERVICE ENGINE SOON or
Check Engine Lamp) is switched off.
Immediately after the ignition switch is turned on, the Malfunc-
tion Indicator Lamp (SERVICE ENGINE SOON or Check
Engine Lamp) is lit for 20 seconds to indicate that the Malfunc-
tion Indicator Lamp (SERVICE ENGINE SOON or Check
Engine Lamp) operates normally.
.
AK302202 AB
MALFUNCTION INDICATOR LAMP
(SERVICE ENGINE SOON
OR CHECK ENGINE LAMP)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-6
Items Indicated by the Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp)
DTC
ITEM
-
Powertrain control module (PCM) malfunction
P0101*
Mass airflow circuit range/performance problem
P0102*
Mass airflow circuit low input
P0103*
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*
Intake air temperature circuit range/performance problem
P0112*
Intake air temperature circuit low input
P0113*
Intake air temperature circuit high input
P0116*
Engine coolant temperature circuit range/performance problem
P0117*
Engine coolant temperature circuit low input
P0118*
Engine coolant temperature circuit high input
P0122*
Throttle position sensor (main) circuit low input
P0123*
Throttle position sensor (main) circuit high input
P0125*
Insufficient coolant temperature for closed loop fuel control
P0128
Coolant thermostat (Coolant temperature below thermostat regulating temperature)
P0130
Cylinder 1, 4 heated oxygen sensor circuit (sensor 1)
P0131
Cylinder 1, 4 heated oxygen sensor circuit low voltage (sensor 1)
P0132
Cylinder 1, 4 heated oxygen sensor circuit high voltage (sensor 1)
P0133
Cylinder 1, 4 heated oxygen sensor circuit slow response (sensor 1)
P0134*
Cylinder 1, 4 heated oxygen sensor circuit no activity detected (sensor 1)
P0135
Cylinder 1, 4 heated oxygen sensor heater circuit (sensor 1)
P0136
Cylinder 1, 4 heated oxygen sensor circuit (sensor 2)
P0137
Cylinder 1, 4 heated oxygen sensor circuit low voltage (sensor 2)
P0138
Cylinder 1, 4 heated oxygen sensor circuit high voltage (sensor 2)
P0139
Cylinder 1, 4 heated oxygen sensor circuit slow response (sensor 2)
P0141
Cylinder 1, 4 heated oxygen sensor heater circuit (sensor 2)
P0150
Cylinder 2, 3 heated oxygen sensor circuit (sensor 1)
P0151
Cylinder 2, 3 heated oxygen sensor circuit low voltage (sensor 1)
P0152
Cylinder 2, 3 heated oxygen sensor circuit high voltage (sensor 1)
P0153
Cylinder 2, 3 heated oxygen sensor circuit slow response (sensor 1)
P0154*
Cylinder 2, 3 heated oxygen sensor circuit no activity detected (sensor 1)
P0155
Cylinder 2, 3 heated oxygen sensor heater circuit (sensor 1)
P0156
Cylinder 2, 3 heated oxygen sensor circuit (sensor 2)
P0157
Cylinder 2, 3 heated oxygen sensor circuit low voltage (sensor 2)
P0158
Cylinder 2, 3 heated oxygen sensor circuit high voltage (sensor 2)
P0159
Cylinder 2, 3 heated oxygen sensor circuit slow response (sensor 2)
P0161
Cylinder 2, 3 heated oxygen sensor heater circuit (sensor 2)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-7
P0171
System too lean (cylinder 1, 4)
P0172
System too rich (cylinder 1, 4)
P0174
System too lean (cylinder 2, 3)
P0175
System too rich (cylinder 2, 3)
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*
Throttle position sensor (sub) circuit low input
P0223*
Throttle position sensor (sub) circuit high input
P0300
Random/multiple cylinder misfire detected
P0301
Cylinder 1 misfire detected
P0302
Cylinder 2 misfire detected
P0303
Cylinder 3 misfire detected
P0304
Cylinder 4 misfire detected
P0335*
Crankshaft position sensor circuit
P0340*
Camshaft position sensor circuit
P0401
Exhaust gas recirculation flow insufficient detected
P0403
Exhaust gas recirculation control circuit
P0421
Warm up catalyst efficiency below threshold (cylinder 1, 4)
P0431
Warm up catalyst efficiency below threshold (cylinder 2, 3)
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
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)
P0461
Fuel level sensor (main) circuit range/performance
P0506
Idle control system RPM lower than expected
P0507
Idle control system RPM higher than expected
P0513
Immobilizer malfunction
P0551
Power steering pressure switch circuit range/performance
P0554
Power steering pressure switch circuit intermittent
P0606*
Powertrain control module main processor malfunction
DTC
ITEM
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-8
P0638*
Throttle actuator control motor circuit range/performance
P0642*
Throttle position sensor power supply
P0657*
Throttle actuator control motor relay circuit malfunction
P0705
Transmission range switch circuit malfunction (RPNDL input)
P0712*
Transmission fluid temperature sensor circuit low input
P0713*
Transmission fluid temperature sensor circuit high input
P0715*
Input/Turbine speed sensor circuit
P0720*
Output speed sensor circuit
P0731*
Gear 1 incorrect ratio
P0732*
Gear 2 incorrect ratio
P0733*
Gear 3 incorrect ratio
P0734*
Gear 4 incorrect ratio
P0736*
Gear R incorrect ratio
P0741
Torque converter clutch circuit performance or stuck off
P0742
Torque converter clutch circuit stuck on
P0743*
Torque converter clutch circuit electrical
P0753*
Shift solenoid "A" electrical
P0758*
Shift solenoid "B" electrical
P0763*
Shift solenoid "C" electrical
P0768*
Shift solenoid "D" electrical
P1020
Mitsubishi innovative valve timing and lift electronic control system (MIVEC) performance
problem
P1021
Engine oil control valve circuit
P1601*
Communication malfunction (between PCM and throttle actuator control unit)
P1603*
Battery backup line malfunction
P1751*
A/T control relay malfunction
P2066
Fuel level sensor (sub) circuit range/performance
P2100*
Throttle actuator control motor circuit (open)
P2101*
Throttle actuator control motor magneto malfunction
P2102*
Throttle actuator control motor circuit (shorted low)
P2103*
Throttle actuator control motor circuit (shorted high)
P2108*
Throttle actuator control processor malfunction
P2122*
Accelerator pedal position sensor (main) circuit low input
P2123*
Accelerator pedal position sensor (main) circuit high input
P2127*
Accelerator pedal position sensor (sub) circuit low input
P2128*
Accelerator pedal position sensor (sub) circuit high input
P2135*
Throttle position sensor (main and sub) range/performance problem
P2138*
Accelerator pedal position sensor (main and sub) range/performance problem
P2227*
Barometric pressure circuit range/performance problem
DTC
ITEM
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