Yamaha YZFR6X(C) 2008, Service Manual

Page: 359 / 434

FUEL INJECTION SYSTEM
8-36
EAS27380
SELF-DIAGNOSTIC FUNCTION TABLE
If the ECU detects an abnormal signal from a sensor while the vehicle is being driven, the ECU illu-
minates the engine trouble warning light and provides the engine with alternate operating instruc-
tions that are appropriate for the type of malfunction.
When an abnormal signal is received from a sensor, the ECU processes the specified values that
are programmed for each sensor in order to provide the engine with alternate operating instructions
that enable the engine to continue to operate or stop operating, depending on the conditions.
Self-Diagnostic Function table
Fault
code No.
Item Symptom
Able/
unable to
start
Able/
unable to
drive
11
Cylinder identification
sensor
No normal signals are received
from the cylinder identification sen-
sor when the engine is started or
while the vehicle is being driven.
Unable Able
12
Crankshaft position
sensor
No normal signals are received
from the crankshaft position sen-
sor.
Unable Unable
13
Intake air pressure
sensor
(open or short circuit)
Intake air pressure sensor:
open or short circuit detected.
Able Able
14
Intake air pressure
sensor hose line
(piping system) Intake air pressure sensor:
hose system malfunction (clogged
or detached hose).
Able Able
15
Throttle position sen-
sor (for throttle valves)
(open or short circuit/
loose connection)
Throttle position sensor (for throttle
valves):
open or short circuit detected.
Throttle position sensor (for throttle
valves) coupler connection is
loose.
Able/Unable Able/Unable
17
EXUP servo motor cir-
cuit
(open or short circuit)
EXUP servo motor circuit:
open or short circuit detected.
Able Able
18
EXUP servo motor
(stuck)
EXUP servo motor is stuck. Able Able
19
Sidestand switch
(open circuit in the
wire to the ECU) Open circuit is detected in the input
line from the sidestand switch to
the ECU.
Unable Unable
20
Intake air pressure
sensor or atmo-
spheric pressure sen-
sor When the main switch is turned to
“ON”, the atmospheric pressure
sensor voltage and intake air pres-
sure sensor voltage differ greatly.
Able Able
21
Coolant temperature
sensor
(open or short circuit)
Coolant temperature sensor:
open or short circuit detected.
Able Able
22
Air temperature sen-
sor
(open or short circuit)
Air temperature sensor:
open or short circuit detected.
Able Able