MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
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MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-1144
HO2S
BANK2
S1
A3*
4
Heated oxygen
sensor bank 2,
sensor 1 (left
front)
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.
0.2 V or less Code No.
P0150,
P0151,
P0152,
P0153,
P0154
P.13B-305
,
P.13B-323
,
P.13B-330
,
P.13B-335
,
P.13B-341
When engine
is suddenly
revved.
0.6
− 1 V
Engine:
Warming up
(the heated
oxygen sensor
signal is used
to check the
air/fuel mixture
ratio, and
control
condition is
also checked
by the PCM)
Engine is idling Voltage
changes
repeatedly
between 0.4
V or less and
0.6
− 1 V.
2500 r/min
HO2S
BANK2
S2
59
Heated oxygen
sensor bank 2,
sensor 2 (left
rear)
Engine:
warming up
Revving
0 and 600
−
1,000 mV
alternate.
Code No.
P0156,
P0157,
P0158,
P0159
P.13B-365
,
P.13B-382
,
P.13B-389
,
P.13B-394
HO2S
BANK2
S2
A4*
4
Heated oxygen
sensor bank 2,
sensor 2 (left
rear)
Engine:
warming up
Revving
0 and 0.6
− 1
V alternate.
Code No.
P0156,
P0157,
P0158,
P0159
P.13B-365
,
P.13B-382
,
P.13B-389
,
P.13B-394
MUT-III
SCAN TOOL
DISPLAY
ITEM
NO.
INSPECTION ITEM
INSPECTION REQUIREMENT
NORMAL
CONDITION
INSPECTION
PROCEDURE
NO.
REFERENCE
PAGE