Fail-Safe Actions (Substitute Characteristics Operation Control) - Yamaha YZF-R1 2007 Service Manual

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EAS27362

FAIL-SAFE ACTIONS (SUBSTITUTE CHARACTERISTICS OPERATION CONTROL)

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.
Cylinder identification
11
sensor
Crankshaft position
12
sensor
Intake air pressure
13 sensor
(open or short circuit)
Intake air pressure
14 sensor
(pipe system)
Throttle position sen-
sor (for throttle valves)
15
(open or short circuit/
loose connection)
EXUP servo motor cir-
17 cuit
(open or short circuit)
EXUP servo motor
18
(stuck)
Sidestand switch
19 (open circuit wire har-
ness to ECU)
Intake air pressure
sensor
20
Atmospheric pressure
sensor
Coolant temperature
21
sensor
Intake air temperature
22
sensor
email: info@motomatrix.co.uk
Item
• No normal signals are received
from the cylinder identification
sensor.
• Malfunction of electric starting
system.
No normal signals are received
from the crankshaft position sen-
sor.
Intake air pressure sensor-open or
short circuit detected.
Intake air pressure sensor-pipe
system malfunction (clogged or
detached hose).
Throttle position sensor (for throttle
valves):
open or short circuit detected.
Throttle position sensor (for throttle
valves) coupler connection is
loose.
EXUP servo motor circuit: open or
short circuit detected.
EXUP servo motor is stuck.
Open circuit is detected in the input
line from the sidestand switch to
the ECU.
Intake air pressure sensor-open or
short circuit detected.
Defective values are detected due
to the internal malfunction of the
intake air pressure sensor or the
Atmospheric pressure sensor.
Coolant temperature sensor-open
or short circuit detected.
Intake air temperature sensor-
open or short circuit detected.
FUEL INJECTION SYSTEM
Symptom
8-33
Able / Able /
unable to unable to
start drive
Unable Able
Unable Unable
Able Able
Able Able
Able/Unable Able/Unable
Able Able
Able Able
Unable Unable
Able Able
Able Able
Able Able