1A-22 Engine General Information and Diagnosis:
Fail-Safe Function Table
B947H11104007
FI system is provided with fail-safe function to allow the engine to start and the motorcycle to run in a minimum
performance necessary even under malfunction condition.
Item Fail-Safe Mode Starting Ability Running Ability
CMP sensor
When camshaft position signal has failed
during running, the ECM determines the
cylinder positions as # to be the same as
before occurrence of such a failure.
“NO” “YES”
Motorcycle can run, but once engine
stops, engine can not start.
IAP sensor
Intake air pressure value is fixed to 101 KPa
(760 mmHg).
“YES” “YES”
TP sensor
The throttle opening is fixed to full open
position.
Ignition timing is also fixed.
“YES” “YES”
ECT sensor
Engine coolant temperature value is fixed to
80 °C (176 °F).
Cooling fan is fixed on position.
“YES” “YES”
IAT sensor
Intake air temperature value is fixed to 40 °C
(104 °F).
“YES” “YES”
AP sensor
Atmospheric pressure is fixed to 101 kPa
(760 mmHg).
“YES” “YES”
Ignition signal
#1 fuel-cut
(primary side and secondary side)
“YES” “YES”
#2, #3 & #4 cylinders can run.
#2 fuel-cut
(primary side and secondary side)
“YES” “YES”
#1, #3 & #4 cylinders can run.
#3 fuel-cut
(primary side and secondary side)
“YES” “YES”
#1, #2 & #4 cylinders can run.
#4 fuel-cut
(primary side and secondary side)
“YES” “YES”
#1, #2 & #3 cylinders can run.
Primary injection signal
—
“YES” “YES”
#2, #3 & #4 cylinders can run.
—
“YES” “YES”
#1, #3 & #4 cylinders can run.
—
“YES” “YES”
#1, #2 & #4 cylinders can run.
—
“YES” “YES”
#1, #2 & #3 cylinders can run.
Secondary injection signal
—
— “YES”
#2, #3 & #4 cylinders can run.
—
— “YES”
#1, #3 & #4 cylinders can run.
—
— “YES”
#1, #2 & #4 cylinders can run.
—
— “YES”
#1, #2 & #3 cylinders can run.
STV actuator
Secondary throttle valve is fixed to full close
position. When motor disconnection or lock
occurs, power from ECM is shut off.
“YES” “YES”
STP sensor
Secondary throttle valve is fixed to full open
position.
“YES” “YES”
Gear position signal Gear position signal is fixed to 6th gear. “YES” “YES”
HO2 sensor
Feedback compensation is inhibited. (Air/
fuel ratio is fixed to normal.)
“YES” “YES”
PAIR control solenoid valve
ECM stops controlling PAIR control solenoid
valve.
“YES” “YES”
EXCV actuator
EXCV actuator is fixed to full open position.
When motor disconnectio
n or
lock occurs,
power from ECM is shut off.
“YES” “YES”
ISC valve
When motor disconnection or lock occurs,
power from ECM is shut off.
“YES” “YES”
Manuals by Motomatrix / The Solution For Lost Motorcycle Coded Keys
email: info@motomatrix.co.uk / www.motomatrix.co.uk
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