Yamaha R15 2022 Service Manual page 375

Fault code
Item
No.
P1601 Sidestand switch
Open or short circuit
in wire of the ECU is
detected. (normal sig-
nal is not received
from the sidestand
switch)
P0601 Internal malfunction in
ECU. (When this mal-
function is detected in
the ECU, the fault
code might not appear
on the tool display.)
P0132 O sensor (short to
2
power circuit is de-
tected)
P2645 VVA solenoid mal-
function (normal sig-
nal is not received
from the VVA solenoid
circuit while driving
the VVA solenoid)
P1602 Malfunction in ECU in-
ternal circuit (normal
backup voltage is not
supplied to the ECU)
SELF-DIAGNOSTIC FUNCTION AND
DIAGNOSTIC CODE TABLE
Symptom
• Defective coupler
between sidestand
switch and ECU.
• Open or short cir-
cuit in wire harness
between sidestand
switch and ECU.
• Defective sidestand
switch.
• Malfunction in ECU.
• Malfunction in ECU.
[P0132] High voltage
of the O
2
cuit (4.8 V or more)
• Improperly installed
O sensor.
2
• Defective coupler
between O
and ECU.
• Short to power cir-
cuit in wire harness
between O
and ECU.
• Defective O
sor.
• Malfunction in ECU.
• Defective coupler
between VVA sole-
noid and ECU.
• Open or short cir-
cuit in wire harness
between VVA sole-
noid and ECU.
• Open circuit in VVA
solenoid.
• Improperly connect-
ed battery lead.
• Defective coupler
between main
switch and ECU.
• Open circuit in wire
harness between
main switch and
ECU.
• Malfunction in ECU.
Possible cause
Engine cannot be
started.
Engine cannot be
started.
Increased exhaust
sensor cir- emissions.
sensor
2
sensor
2
sen-
2
Decreased engine
torque in the high
speed range.
Engine idling speed is
high.
Engine idling speed is
unstable.
Increased exhaust
emissions.
Engine is difficult to
start.
8-42
ELEC – +
Remarks
Engine is forcefully
stopped (Ignition and
injector output are
stopped.)
Ignition and injection
are not carried out.
Judgment for other
fault codes are not
carried out.
Writing to EEPROM is
not carried out.
O feedback is not
2
carried out.
Fixed to the low
speed cam position.
Upper limit for the en-
gine speed is de-
creased.
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