Mitsubishi Galant. Manual — part 85
MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-21
P0201
Injector circuit malfunction
−
Cylinder 1
P0202
Injector circuit malfunction
−
Cylinder 2
P0203
Injector circuit malfunction
−
Cylinder 3
P0204
Injector circuit malfunction
−
Cylinder 4
P0300
Random 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 malfunction
P0340
Camshaft position sensor circuit malfunction
P0401
Exhaust gas recirculation flow insufficient detected
P0403
Exhaust gas recirculation solenoid malfunction
P0421
Warm up catalyst efficiency below threshold
P0442
Evaporative emission control system leak detected
P0443
Evaporative emission control system purge control valve circuit
malfunction
P0446Evaporative emission control system vent control malfunction
P0450
Evaporative emission control system pressure sensor malfunction
P0451
Evaporative emission control system pressure sensor range/performance
P0455
Evaporative emission control system leak detected (Gross leak)
P0500
Vehicle speed sensor malfunction
P0506Idle control system rpm lower than expected
P0507
Idle control system rpm higher than expected
P0551
Power steering pressure sensor circuit range/performance
P0705
Transmission range
sensor circuit
malfunction (PRNDL
input)
•
A/T DTC No.27 (Park/Neutral position
switch system: Open circuit)
•
A/T DTC No.28 (Park/Neutral position
switch system: Short circuit)
P0710
Transmission fluid
temperature sensor
circuit malfunction
•
A/T DTC No.15 (Oil temperature sensor
system: Open circuit)
•
A/T DTC No.16 (Oil temperature sensor
system: Short circuit)
P0715
Input/turbine speed
sensor circuit
malfunction
•
A/T DTC No.22 (Input shaft speed sensor
system)
P0720
Output speed sensor
circuit malfunction
•
A/T DTC No.23 (Output shaft speed sensor
system)
P0725
Engine speed input
circuit malfunction
•
A/T DTC No.21 (Crankshaft position sensor
system)
DTC CODE
DIAGNOSTIC ITEMS
REFERENCE
PAGE
MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-22
NOTE: Do not replace the powertrain control module (PCM) until a through terminal check reveals there are
no short/open circuits.
NOTE: Check that the PCM ground circuit is normal before checking for the cause of the problem.
NOTE: After the PCM detects a malfunction, a diagnostic trouble code is recorded the next time the engine is
started and the same malfunction is re-detected. However, for items marked with a "*," the diagnostic trouble
code is recorded on the first detection of the malfunction.
NOTE: Sensor 1 indicates the sensor mounted at a position closest to the engine, and sensor 2 indicates the
sensor mounted at the position second closest to the engine.
SYMPTOM CHART
M1131008800094
NOTE: Check that the powertrain control module (PCM) ground circuit is normal before checking for the
cause of the problem.
P0740
Torque converter clutch
system malfunction
•
A/T DTC No.36 (Torque converter clutch
solenoid system: Short circuit/Open circuit)
•
A/T DTC No.52 (Torque converter clutch
solenoid system: Faulty system)
•
A/T DTC No.53 (Torque converter clutch
solenoid system: Lock-up stuck on)
P0750
Shift solenoid A
malfunction
•
A/T DTC No.31 (Low and reverse solenoid
valve system)
P0755
Shift solenoid B
malfunction
•
A/T DTC No.32 (Underdrive solenoid valve
system)
P0760
Shift solenoid C
malfunction
•
A/T DTC No.33 (Second solenoid valve
system)
P0765
Shift solenoid D
malfunction
•
A/T DTC No.34 (Overdrive solenoid valve
system)
P1400
Manifold differential pressure sensor circuit malfunction
P1500
Generator FR terminal circuit malfunction
P1610
Immobilizer malfunction
P1751
A/T control relay
malfunction
•
A/T DTC No.54 (A/T control relay system)
DTC CODE
DIAGNOSTIC ITEMS
REFERENCE
PAGE
SYMPTOMS
INSPEC-
TION PRO-
CEDURE
REFERENCE
PAGE
Communication
with scan tool is
impossible
Communication with all systems is not possible
1
Communication with PCM only is not possible
2
Service engine
soon/
malfunction
indicator lamp
and related
parts
The service engine soon/malfunction indicator lamp
does not illuminate right after the ignition switch is
turned to the "ON" position
3
The service engine soon/malfunction indicator lamp
remains illuminated and never goes out
4
MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-23
Starting
Cranks, won't start
5
Fires up and dies
6
Hard starting
7
Idling stability
(improper
idling)
Unstable idle (rough idle, hunting)
8
Idle speed is high (improper idle speed)
9
Idle speed is low (improper idle speed)
10
Idling stability
(engine stalls)
When the engine is cold, it stalls at idle (die out)
11
When the engine is hot, it stalls at idle (die out)
12
The engine stalls when accelerating (pass out)
13
The engine stalls when decelerating
14
Driving
Hesitation, sag or stumble
15
Acceleration shock
16
Deceleration shock
17
Poor acceleration
18
Surge
19
Knocking
20
Dieseling
21
Too high CO and HC concentration when idling
22
IM240 test
failure
Transient, mass emission tailpipe test failure
23
Purge flow test of the evaporative emission canister
failure
24
Pressure test of the evaporative system failure
25
Generator output voltage is low (approximately 12.3 volts)
26
Improper engine idle speed when the A/C is on (A/C switch 2 signal)
27
Fans (radiator fan, A/C condenser fan) are inoperative
28
Power supply system and ignition switch-IG system
29
Fuel pump system
30
Ignition switch-ST system and park/neutral position switch system
31
Ignition circuit system
32
A/C system
33
SYMPTOMS
INSPEC-
TION PRO-
CEDURE
REFERENCE
PAGE
MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-24
PROBLEM SYMPTOMS TABLE(FOR YOUR
INFORMATION)
ITEMS
SYMPTOM
Starting
Won't start
The starter is used to crank the engine, but there is no combustion
within the cylinders, and the engine won't start.
Fires up and dies The engine starts, but then the engine soon stalls.
Hard starting
Engine starts after cranking a while.
Idling stability
Hunting
Engine speed doesn't remain constant; changes at idle.
Rough idle
Usually, a judgement can be based upon the movement of the
tachometer pointer, and the vibration transmitted to the steering wheel,
shift lever, body, etc.
Incorrect idle
speed
The engine doesn't idle at the usual correct speed.
Engine stall (die
out)
The engine stalls when the foot is taken from the accelerator pedal,
regardless of whether the vehicle is moving or not.
Engine stall
(pass out)
The engine stalls when the accelerator pedal is depressed or while it is
being used.
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