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FI
FUEL INJECTION SYSTEM
EAS00901
Checking for a defective engine trouble warning light bulb
The engine trouble warning light comes on for 1.4 seconds after the main switch is turned to “ON” or
when the start switch is pushed. If the warning light does not come on under these conditions, the
warning light bulb may be defective.
EAS00902
ALTERNATE OPERATION CONTROL (FAIL-SAFE ACTION)
If the ECU detects an abnormal signal from a sensor while the motorcycle is being driven, the ECU
illuminates the engine trouble warning light and it provides the engine with alternate operating
instructions, according to the 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 the alternate operating instruc-
tions that enable the engine to continue to operate or stop operating, depending on the conditions.
The ECU applies the fail-safe actions in two ways: one in which the sensor output is set to a pre-
scribed value, and the other in which the ECU directly operates an actuator. Details on the fail-safe
actions are given in the table below.
FAIL-SAFE ACTION TABLE
Self-diagnostic function
Fault
code No.
Item Symptom Fail-safe action Startability Driveability
12
Crankshaft position
sensor
No normal signals are
received from the sensor.
— No No
13
Intake air pressure
sensor (open or short
circuit)
Open or short circuit is
detected.
• Fixes the intake air pres-
sure to 101 kPa
(760 mmHg, 29.9 inHg).
Yes Yes
14
Intake air pressure
sensor
Intake air pressure sensor
hose is clogged or discon-
nected, causing the constant
application of atmospheric
pressure to the sensor.
• Fixes the intake air pres-
sure to 101 kPa
(760 mmHg, 29.9 inHg). Yes Yes
15
Throttle position sensor
(open or short circuit)
Open or short circuit is
detected.
• Fixes the throttle position
sensor to fully open.
Yes Yes
16
Throttle position sensor
(stuck)
The throttle position sensor is
detected stuck.
• Fixes the throttle position
sensor to fully open.
Yes Yes
19
Broken or discon-
nected blue/black lead
of the ECU
Open circuit in the input line
(blue/black) of the ECU is
detected.
— No No
21
Coolant temperature
sensor
Open or short circuit is
detected.
• Fixes the coolant tempera-
ture to 80 °C (176 °F).
Yes Yes
22
Intake air temperature
sensor
Open or short circuit is
detected.
• Fixes the intake air tem-
perature to 20 °C (68 °F).
Yes Yes
Main switch Main switch
off
on
Engine trouble
warning light
Light
off
Light on for 1.4
seconds
Light
off
Initialized