Yamaha FZ 25 2021, Supplementary Service Manual

Page: 162 / 247

6-32
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ELEC
SELF-DIAGNOSTIC FUNCTION AND
DIAGNOSTIC CODE TABLE
Intake air
tempera-
ture sen-
sor
(Open or
short cir-
cuit)
P0112
(ground
fault)
P0113
(open circuit/
sky fault)
Able Able
- Coupler malfunc-
tion between
sensor module
and ECU.
- Open or short
circuit in harness
between sensor
module and
ECU.
- Incorrect installa-
tion of the sen-
sor module.
- Sensor malfunc-
tion.
- ECU malfunc-
tion.
No normal sig-
nals are received
from the intake air
temperature sen-
sor.
P0112: Signal is
0.2 V or less
P0113: Signal is
4.8 V or more
Startability
deterioration.
Exhaust gas
deterioration.
Instable
idling. Intake air
temperature
is fixed at
20 [°].
O
2
feedback
is prohibited.
(P0112)
Remove the
intake air
temperature
sensor
(MAQS) cou-
pler and con-
nect the
signal lead to
GND. Note:
Incorrect op-
eration may
damage the
vehicle such
as ECU. Be
careful.
(P0113)
Remove the
intake air
temperature
sensor
(MAQS) cou-
pler (P0107/

P0122 error
also occurs
at the same
time) or dis-
connect it at
the switch
box.
O
2
sen-
sor
(Open
circuit)
P2195 Able Able
- Incorrect installa-
tion of the sen-
sor.
- Coupler malfunc-
tion between
sensor and
ECU.
- Open or short
circuit in harness
between sensor
and ECU.
- Sensor malfunc-
tion
- ECU malfunc-
tion.
No normal sig-
nals are received
from the O
2
sen-
sor
Signal is 0.25 V or
more and 0.53 V
or less
Exhaust gas
deterioration O
2
feedback
is prohibited.
O
2
feedback
feedback
learning is
prohibited.
Remove the
O
2
sensor
coupler and
leave Idle for
more than
10 minutes,
then ride for
more than
60 seconds
at fully open.
Lean an-
gle sen-
sor
Judged
as turn-
over
P1E30 Unable Unable
- Vehicle has over-
turned.
- Improperly in-
stalled sensor.
- Defective sensor.
- ECU malfunc-
tion.
Overturn signal
detected Engine
stopped
Inability to
start Engine run-
ning

En-
gine forcibly
stops.
Engine has
stopped

Starting is
prohibited.
Remove the
lean angle
sensor and
put it in an
“overturned”
condition.
Or turn the
vehicle over.
Ignition
system
P0351 Unable Unable
- Coupler malfunc-
tion between ig-
nition coil and
ECU.
- Open or short
circuit in harness
between ignition
coil and ECU.
- Incorrect installa-
tion of the igni-
tion coil.
- Ignition coil mal-
function.
- ECU malfunc-
tion.
No normal sig-
nals are received
from the ignition
circuit. Engine
stopped.
Insufficient
power.
Startability
deterioration.
Inability to
start. Engine run-
ning

En-
gine forcibly
stops.
Engine has
stopped

Starting is
prohibited.
Stop injec-
tion.
Remove the
ignition coil
coupler (pri-
mary line)
while engine
racing.
Disconnect
the ignition
coil (primary
line) at the
switch box
and continue
cranking.
Item
Abnormal
code
Start
engine Travel
Probable
malfunction
Direct cause
Vehicle
symptoms
System
operation on
failure
Operation
example for
causing
abnormal
state
B9X-F8197-E0.book Page 32 Thursday, July 16, 2020 2:28 PM