Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 332
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-527
HO2S
BANK2
S1
A3
*6
Heated
oxygen
sensor (bank
2, sensor 1)
Engine: Warm
(air/fuel
mixture is
made leaner
when
decelerating,
and is made
richer when
revving.)
When the
engine is
running at
4000 r/min,
decelerated
suddenly.
0.2 V or less to
0.6
−
1 V (After
several
seconds have
elapsed)
Code No.
P0150,
P0153,
P0154
Engine: Warm
(the heated
oxygen sensor
signal is used
to check the
air/fuel mixture
ratio, and
control
condition is
also checked
by the PCM
<A/T> or ECM
<M/T>)
Engine is idling Voltage
alternates
between 0.4 V
or less and 0.6
−
1 V.
2,500 r/min
HO2S
BANK2
S2
A4
*6
Heated
oxygen
sensor (bank
2, sensor 2)
Engine:
warming up
Revving
0 and 0.6
−
1 V
alternate.
Code No.
P0156,
P0159
IAT
SENSOR
13
*6
Intake air
temperature
sensor
Ignition switch:
"ON" or with
engine running
Intake air
temperature is
-20
°
C (-4
°
F)
-20 degC
(-4 degF)
Code
No.P0111
Intake air
temperature is
0
°
C (32
°
F)
0 degC
(32 degF)
Intake air
temperature is
20
°
C (68
°
F)
20 degC
(68 degF)
Intake air
temperature is
40
°
C (104
°
F)
40 degC
(104 degF)
Intake air
temperature is
80
°
C (176
°
F)
80 degC
(176 degF)
IG.
TIMING
ADV
44
*6
Ignition coils
and ignition
power
transistor
•
Engine:
warming up
•
Timing light
is set (to
check actual
ignition
timing)
Engine is idling 7
−
23 deg
-
-
2,500 r/min
28
−
48 deg
MUT-II SCAN
TOOL
DISPLAY
ITEM
NO.
INSPECTION
ITEM
INSPECTION REQUIREMENT
NORMAL
CONDITION
INSPECTION
PROCEDURE
NO.
REFERENCE
PAGE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-528
LONG
TRIM B1
81
*6
Long-term
fuel
compensatio
n (bank 1)
Engine: warming up, 2,500 r/
min without any load (during
closed loop)
−
12.5
−
12.5%
Code No.
P0171,
P0172
LONG
TRIM B2
83
*6
Long-term
fuel
compensatio
n (bank 2)
Engine: warming up, 2,500 r/
min without any load (during
closed loop)
−
12.5
−
12.5%
Code No.
P0174,
P0175
SHORT
TRIM B1
82
*6
Short-term
fuel
compensatio
n (bank 1)
Engine: warming up, 2,500 r/
min without any load (during
closed loop)
−
25
−
25%
Code No.
P0171,
P0172
SHORT
TRIM B2
84
*6
Short-term
fuel
compensatio
n (bank 2)
Engine: warming up, 2,500 r/
min without any load (during
closed loop)
−
25
−
25%
Code No.
P0174,
P0175
SYS.
STATUS
B1
88
*6
Fuel control
condition
(bank 1)
Engine:
warming up
2,500 r/min
Closed loop
-
-
When engine
is suddenly
revved
Open circuit
−
drivecondition
SYS,
STATUS
B2
89
*6
Fuel control
condition
(bank 2)
Engine:
warming up
2,500 r/min
Closed loop
-
-
When engine
is suddenly
revved
Open loop
−
drive condition
TP
SENSOR
8A
*6
Throttle
position
sensor
Ignition switch:
"ON"
Set to idle
position
535
−
735 mV
(0
−
1%)
Code No.
P0121,
P0122,
P0123
Gradually open Increases in
proportion to
throttle
opening angle
Open fully
4,500
−
5,500
mV (80
−
100%)
MUT-II SCAN
TOOL
DISPLAY
ITEM
NO.
INSPECTION
ITEM
INSPECTION REQUIREMENT
NORMAL
CONDITION
INSPECTION
PROCEDURE
NO.
REFERENCE
PAGE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-529
ACTUATOR TEST REFERENCE TABLE
M1131009000068
VAF
SENSOR
12
*6
Volume air
flow sensor
(mass air
flow rate)
*5
•
Engine
coolant
temperature
: 80
−
95
°
C
(176
−
203
°
F)
•
Lights,
electric
cooling fan
and all
accessories
: "OFF"
•
Transaxle:
neutral (A/T:
"P" range)
Engine is idling 2.2
−
5.7 gm/s
-
-
2,500 r/min
9.0
−
14.7 gm/s
Engine is
revved
Frequency (or
air flow
volume)
increases in
response to
revving
VSS
24
*6
Vehicle
speed sensor
Drive at 40 km/h (25 mph).
Approximately
40 km/h (25
mph)
Code No.
P0500
<M/T>
<A/T>
MUT-II SCAN
TOOL
DISPLAY
ITEM
NO.
INSPECTION
ITEM
INSPECTION REQUIREMENT
NORMAL
CONDITION
INSPECTION
PROCEDURE
NO.
REFERENCE
PAGE
MUT-II
SCAN
TOOL
DISPLAY
ITEM
NO.
INSPECTION
ITEM
DRIVE
CONTENTS
INSPECTION REQUIREMENT
NORMAL
CONDITION
INSPECTION
PROCEDURE
NO.
REFEREN
CE PAGE
EGR
SOLEN
OID
10
EGR
solenoid
Solenoid
valve turns
from OFF to
ON.
Ignition switch:"ON"
Clicks
when
solenoid
valve is
driven.
Code No.
P0403
EVAP
PURGE
08
Evaporative
emission
purge
solenoid
Solenoid
valve turns
from OFF to
ON.
Ignition switch:"ON"
Clicks
when
solenoid
valve is
driven.
Code No.
P0443
EVAP
VENT
29
Evaporative
emission
ventilation
solenoid
Solenoid
valve turns
from OFF to
ON.
Ignition switch:"ON"
Clicks
when
solenoid
valve is
driven.
Code No.
P0446
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-530
FUEL
PUMP
07
Fuel pump
Fuel pump
operates and
fuel is
recirculated
•
Engine:
cranking
•
Fuel
pump:
activated
Inspect
according to
both the
above
conditions
Pinch the
return hose
with fingers
to feel the
pulse of the
fuel being
recirculated
Pulse is felt Procedure
No.30
Listen near
the fuel tank
for the sound
of fuel pump
operation
Sound of
operation is
heard
IG 5
°
BTDC
17*
Basic
ignition
timing
Set to ignition
timing
adjustment
mode
•
Engine: idling
•
Conect timing light
5
°
BTDC
-
-
NO. 1
INJECTOR
01
Injectors
Cut fuel to
No.1 injector
Engine: warm, idle (cut the
fuel supply to each injector
in turn and check cylinders
which don't affect idling.)
Idling
condition
becomes
different
(becomes
unstable)
Code No.
P0201,
P0202,
P0203,
P0204,
P0205,
P0206
NO. 2
INJECTOR
02
Cut fuel to
No.2 injector
NO. 3
INJECTOR
03
Cut fuel to
No.3 injector
NO. 4
INJECTOR
04
Cut fuel to
No.4 injector
NO. 5
INJECTOR
05
Cut fuel to
No.5 injector
NO. 6
INJECTOR
06
Cut fuel to
No.6 injector
RADIAT.
FAN LO
21
Fan
controller
Drive the fan
motor
Ignition switch: "ON"
Radiator
fan and
A/C
condenser
fan rotate
at high
speed.
Procedure
No.28
MUT-II
SCAN
TOOL
DISPLAY
ITEM
NO.
INSPECTION
ITEM
DRIVE
CONTENTS
INSPECTION REQUIREMENT
NORMAL
CONDITION
INSPECTION
PROCEDURE
NO.
REFEREN
CE PAGE
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