Yamaha Phazer Venture Lite PZ50MTA 2011, Дополнительное руководство по обслуживанию

Страница: 22 / 78

FI
13
ECU SELF-DIAGNOSTIC FUNCTION
The ECU is equipped with a self-diagnostic function in order to ensure that the fuel injection system
is operating normally. If this function detects a malfunction in the system, it immediately operates the
engine under substitute characteristics and the warning light and self-diagnosis warning indicator
come on to alert the rider that a malfunction has occurred in the system. Once a malfunction has
been detected, a fault code is stored in the memory of the ECU.
• To inform the rider that the fuel injection system is not functioning, the warning light and self-diag-
nosis warning indicator flash when the main switch is being turned to the start position.
• If a malfunction is detected in the system by the self-diagnostic function, the ECU provides an
appropriate substitute characteristic operation, and the warning light and self-diagnosis warning
indicator flash to alert the rider of the detected malfunction.
• After the engine has been stopped, the lowest fault code number appears on the odometer/
tripmeter LCD. Once a fault code has been displayed, it remains stored in the memory of the ECU
until it is deleted.
SELF-DIAGNOSTIC FUNCTION TABLE
If the ECU detects an abnormal signal from a sensor while the snowmobile is being driven, the
warning light and self-diagnosis warning indicator come on to alert the rider that a malfunction has
occurred and the ECU 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 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 sensor.
Unable
Able
(under certain
conditions)
12
Crankshaft position sensor No normal signals are received from
the crankshaft position sensor.
Unable Unable
13
Cylinder-#1 intake air pressure
sensor (open or short circuit) No normal signals are received from
the Cylinder-#1intake air pressure sen-
sor.
Able Able
14
Cylinder-#1 intake air pressure
sensor (hose line) Cylinder-#1 intake air pressure sensor:
hose system malfunction (clogged or
detached hose).
Intake air system failure (the pressure
is not supplied to the intake air pres-
sure sensor in a stable condition)
Able Able
15
Throttle position sensor (open or
short circuit) No normal signals are received from
the throttle position sensor.
Able Able
16
Throttle position sensor (stuck) Signal from throttle position sensor will
not change.
Able Able
21
Coolant temperature sensor
(open or short circuit) No normal signals are received from
the coolant temperature sensor.
Able Able
22
Intake air temperature sensor
(open or short circuit) No normal signals are received from
the intake air temperature sensor.
Able Able
25
Cylinder-#2 intake air pressure
sensor (open or short circuit) No normal signals are received from
the Cylinder-#2 intake air pressure
sensor.
Able Able
FUEL INJECTION SYSTEM