MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-827
LAFS
(front)
E1
Linear air-fuel
ratio sensor
Engine: warming
up (Air/fuel
mixture is made
leaner when
decelerating and
is made richer
when revving)
When the
engine is
running at
4,000 r/min,
decelerate
suddenly.
3.5 V or more
→ 2.0 V or
less (After
several
seconds have
elapsed)
Code No.
P0130,
P0131,
P0132,
P0133,
P0134,
P2237,
P2243,
P2251
P.13A-218
,
P.13A-223
,
P.13A-228
,
P.13A-233
,
P.13A-236
,
P.13A-672
,
P.13A-677
,
P.13A-682
When engine
is suddenly
revved
2.0 V or less
Engine: warming
up (the linear
air-fuel ratio
sensor signal is
used to check
the air/fuel
mixture ratio,
and control
condition is also
checked by the
ECM.)
Engine is
idling
Voltage
changes
repeatedly
between 2.25
V or less and
2.35 V or
more.
2,500 r/min
Learned
knock
retard
33
Knock control
learned value
Ignition switch: "ON"
• The learning value is
shown, which
compensates the ignition
time based on the knock
sensor.
• "0 %" means "retard angle"
and "100 %" means
"advance angle".
0
− 100 %
(Display
range)
−
−
Long term
fuel trim
(bank 1)
26
Long-term fuel
trim
Engine: warming up, 2,500 r/min
without any load (during closed
loop)
− 12.5 to 12.5
%
Code No.
P0171,
P0172
P.13A-262
,
P.13A-268
M.U.T.-III
SCAN TOOL
DISPLAY
ITEM
NO.
INSPECTION ITEM INSPECTION REQUIREMENT
NORMAL
CONDITION
INSPECTION
PROCEDURE
NO.
REFERENCE
PAGE