Yamaha XSR 900 2022 Service Manual page 471

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
DTC Item
P0657 Fuel system volt-
age: incorrect volt-
age supplied to the
injector, fuel pump
and relay unit.
P0914 Gear position sen-
sor: signal stuck and
sensor signal does
not change.
P0915 Gear position sen-
sor: out of control
signal range and
normal signal is not
received from the
gear position sensor
to ECU.
Probable cause of
malfunction
• Open or short cir-
cuit in wire har-
ness between
relay unit and
ECU.
• Open circuit in wire
harness between
battery and ECU.
• Defective relay
unit.
• Malfunction in
ECU.
• Improperly in-
stalled gear posi-
tion sensor.
• Defective gear po-
sition sensor.
• Malfunction in
ECU.
• Defective coupler
between gear po-
sition sensor and
ECU.
• Open or short cir-
cuit in wire har-
ness between
gear position sen-
sor and ECU.
• Poor circuit conti-
nuity in wire har-
ness between
gear position sen-
sor and ECU.
• Improperly in-
stalled gear posi-
tion sensor.
• Defective gear po-
sition sensor.
• Malfunction in
ECU.
9-65
Vehicle symptom
Engine is difficult to
start.
Increased exhaust
emissions.
Improper display for
gear position.
Engine response is
poor.
Improper display for
gear position.
Engine response is
poor.
Fail-safe system
operation
Monitor voltage = 12
[V]
O feedback is not
2
carried out.
Cruise control fixed
to OFF.
Quick shift system is
not carried out.
Cruise control fixed
to OFF.
Maintains the gear
position value at the
previous value.
Quick shift system is
not carried out.
Cruise control fixed
to OFF.