Mitsubishi Galant (2004+). Manual — part 804
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-33
Throttle position sensor
(main)
• Controls the throttle valve position through the use of the throttle position
sensor (sub) signal.
• Renders the amount of accelerator pedal travel as being approximately
one-half the normal opening angle.
• Prohibits the operation of the engine speed feedback control.
• Prohibits the operation of the auto-cruise control.
• Cuts off fuel when the engine speed exceeds 3,000 r/min.
• Suppresses the engine output by stopping the electronically controlled
throttle valve system if the throttle position sensor (sub) is also
malfunctioning.
Throttle position sensor
(sub)
• Controls the throttle valve position through the use of the throttle position
sensor (main) signal.
• Renders the amount of accelerator pedal travel as being approximately
one-half the normal opening angle.
• Prohibits the operation of the auto-cruise control.
• Cuts off fuel when the engine speed exceeds 3,000 r/min.
• Prohibits the idle speed control from learning.
• Suppresses the engine output by stopping the electronically controlled
throttle valve system if the throttle position sensor (main) is also
malfunctioning.
Throttle valve position
feedback
• Suppresses the engine output by stopping the electronically controlled
throttle valve system.
• Prohibits the operation of the auto-cruise control.
• Prohibits the operation of the engine speed feedback control.
Throttle actuator control
motor
• Suppresses the engine output by stopping the electronically controlled
throttle valve system.
• Prohibits the operation of the auto-cruise control.
• Prohibits the operation of the engine speed feedback control.
Throttle actuator control
computer
• Suppresses the engine output by stopping the electronically controlled
throttle valve system.
• Prohibits the operation of the auto-cruise control.
• Prohibits the operation of the engine speed feedback control.
Communication between
throttle actuator control
computer and engine
control computer
• Renders the amount of accelerator pedal travel as being approximately
one-half the normal opening angle.
• Prohibits the operation of the auto-cruise control.
• Prohibits the operation of the engine speed feedback control.
• Cuts off fuel when the engine speed exceeds 3,000 r/min.
Switching to high-speed
cam in mitsubishi
innovative valve timing
and lift electronic control
• Do not switch to high-speed cam.
• Cut off fuel when the engine speed exceeds 5,000 r/min.
MALFUNCTION ITEM
CONTROL CONTENTS DURING MALFUNCTION
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-34
DIAGNOSTIC TROUBLE CODE CHART
M1131151000828
CAUTION
During diagnosis, a DTC associated with other
system may be set when the ignition switch is
turned on with connector(s) disconnected. On
completion, confirm all systems for DTCs. If
DTCs are set, erase them all.
DTC
DIAGNOSTIC ITEM
REFERENCE
PAGE
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)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-35
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)
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
P0325
Knock sensor circuit
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
DTC
DIAGNOSTIC ITEM
REFERENCE
PAGE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-36
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
P0622
Generator FR terminal circuit malfunction
P0638*
Throttle actuator control motor circuit range/performance problem
P0642*
Throttle position sensor power supply
P0657*
Throttle actuator control motor relay circuit malfunction
P0705
Transmission range
switch circuit malfunction
(PRNDL input)
• A/T DTC No. 27 (Transmission range switch
system: Open circuit)
• A/T DTC No. 28 (Transmission range switch
system: Short circuit)
P0712*
Transmission fluid
temperature sensor low
input
• A/T DTC No. 16 (Transmission fluid
temperature sensor system: Short circuit)
P0713*
Transmission fluid
temperature sensor high
input
• A/T DTC No. 15 (Transmission fluid
temperature sensor system: Open circuit)
P0715*
Input/turbine speed
sensor circuit
• A/T DTC No. 22 (Input shaft speed sensor
system: Short circuit/Open circuit)
P0720*
Output speed sensor
circuit
• A/T DTC No. 23 (Output shaft speed sensor
system: Short circuit/Open circuit)
P0731*
Gear 1 incorrect
• A/T DTC No. 41 (1st gear incorrect ratio)
P0732*
Gear 2 incorrect
• A/T DTC No. 42 (2nd gear incorrect ratio)
P0733*
Gear 3 incorrect
• A/T DTC No. 43 (3rd gear incorrect ratio)
P0734*
Gear 4 incorrect
• A/T DTC No. 44 (4th gear incorrect ratio)
P0736*
Gear R incorrect
• A/T DTC No. 46 (Reverse gear incorrect
ratio)
P0741
Torque converter clutch
circuit performance or
stuck off
• A/T DTC No. 52 (Torque converter clutch
solenoid system: Defective system)
DTC
DIAGNOSTIC ITEM
REFERENCE
PAGE
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