Self-Diagnostic Function Table - Yamaha YZFR6V Service Manual

a b
c
a. Main switch "OFF"
b. Main switch "ON"
c. Engine trouble warning light off
EAS27380

SELF-DIAGNOSTIC FUNCTION TABLE

If the ECU detects an abnormal signal from a sensor while the vehicle is being driven, the ECU illumi-
nates the engine trouble warning light and provides the engine with alternate operating instructions 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
Item
code No.
Cylinder identification
11
sensor
Crankshaft position
12
sensor
Intake air pressure
13 sensor
(open or short circuit)
Intake air pressure
14 sensor hose line
(piping system)
Throttle position sen-
sor (for throttle valves)
15
(open or short cir-
cuit/loose connection)
EXUP servo motor
17 circuit
(open or short circuit)
c
d
No normal signals are received
from the cylinder identification
sensor when the engine is started
or while the vehicle is being driv-
en.
No normal signals are received
from the crankshaft position sen-
sor.
Intake air pressure sensor:
open or short circuit detected.
Intake air pressure sensor:
hose system malfunction (clogged
or detached hose).
Throttle position sensor (for throt-
tle valves):
open or short circuit detected.
Throttle position sensor (for throt-
tle valves) coupler connection is
loose.
EXUP servo motor circuit:
open or short circuit detected.
8-36
FUEL INJECTION SYSTEM
d. Engine trouble warning light on for 1.4
seconds
Symptom
Able/un-
Able/un-
able to
able to start
drive
Unable Able
Unable Unable
Able Able
Able Able
Able/Un- Able/Un-
able able
Able Able