Yamaha XSR 900 2022 Service Manual page 475

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
DTC Item
P1606 [P1606] Intake air
P1607 pressure sensor 2:
P1608 short to ground cir-
cuit is detected.
Normal signal is not
received from the in-
take air pressure
sensor 2 circuit.
[P1607] Intake air
pressure sensor 2:
open or short to
power circuit is de-
tected. Normal sig-
nal is not received
from the intake air
pressure sensor 2
circuit.
[P1608] Intake air
pressure sensor 2:
signal out of range.
Normal signal is not
received from the in-
take air pressure
sensor 2 circuit.
P1609 Intake air pressure
sensor 2: clogging
of hose or sensor in-
stallation improper-
ly. Stable pressure
is not supplied.
P1806 [P1806] Shift sen-
P1807 sor: open or short to
ground circuit is de-
tected. Normal sig-
nal is not received
from the shift sensor
to ECU.
[P1807] Shift sen-
sor: short to power
circuit is detected.
Normal signal is not
received from the
shift sensor to ECU.
Probable cause of
malfunction
• Defective coupler
between intake air
pressure sensor 2
and ECU.
• Open or short cir-
cuit in wire har-
ness between
intake air pressure
sensor 2 and ECU.
• Improperly in-
stalled intake air
pressure sensor 2.
• Defective intake
air pressure sen-
sor 2.
• Malfunction in
ECU.
• Intake air pressure
sensor 2 hose is
not installed.
• Intake air pressure
sensor 2 hose is
not installed cor-
rectly (Detached,
clogged, twisted or
pinching).
• Intake air pressure
sensor 2 hole is
clogged, or intake
air pressure sen-
sor is not installed
correctly.
• Defective coupler
between shift sen-
sor and ECU.
• Open or power
short circuit in wire
harness between
shift sensor and
ECU.
• Improperly in-
stalled shift sen-
sor.
• Defective shift
sensor.
• Malfunction in
ECU.
9-69
Vehicle symptom
Engine is difficult to
start.
Increased exhaust
emissions.
Insufficient power at
high altitudes.
Engine idling speed
is unstable.
Engine idling speed
is high.
Engine idling speed
is unstable.
Loss of engine pow-
er.
Unable to carry out
quick shift system.
(If this abnormality
occurs during actual
shifting, the opera-
tion will be carried
out until the process
is completed.)
Fail-safe system
operation
α–N is fixed.
Intake air pressure
difference is fixed to
0 [kPa].
Atmospheric pres-
sure is fixed to
101.3 [kPa].
Fuel is not cut off
due to the intake air
pressure difference.
O feedback is not
2
carried out.
ISC feedback is not
carried out.
ISC learning is not
carried out.
Cruise control fixed
to OFF.
Intake air pressure
difference is fixed to
0 [kPa].
α–N is fixed.
Fuel is not cut off
due to the intake air
pressure difference.
Atmospheric pres-
sure is fixed to
101.3 [kPa].
O feedback is not
2
carried out.
Cruise control fixed
to OFF.
Quick shift system is
not carried out.