MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-497
HO2S
BANK1
S1
A1
*6
Heated oxygen
sensor (bank
1, sensor 1)
Engine:
warming up
(Air/fuel
mixture is
made leaner
when
decelerating,
and is made
richer when
revving.)
When at 4,000
r/min, engine is
suddenly
decelerated.
0.2 V or less
→
0.6
−
1 V (After
several
seconds have
elapsed)
Code
No.P0130,
P0133,P01
34
P.13B-
107
,
P.1
3B-
116
,
P.1
3B-118
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
BANK1
S2
A2
*6
Heated oxygen
sensor (bank
1, sensor 2)
Engine:
warming up
Revving
0 and 0.6
−
1 V
alternate.
Code
No.P0136,
P0139
P.13B-
132
,
P.1
3B-141
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,P01
54
P.13B-
151
,
P.1
3B-
159
,
P.1
3B-161
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)
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
P.13B-
174
,
P.1
3B-182
MUT-II
SCAN
TOOL
DISPLAY
ITEM
NO.
INSPECTION
ITEM
INSPECTION REQUIREMENT
NORMAL
CONDITION
INSPECTION
PROCEDURE
NO.
REFER
ENCE
PAGE