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 illuminates the engine trouble warning light 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.
1. Engine trouble warning light
Engine trouble warning light fault code indication
Digit of 10: Cycles of 1 sec. on and 1.5 sec. off.
Digit of 1: Cycles of 0.5 sec. on and 0.5 sec. off.
Example: 42
a. Light on
b. Light off
c. 1
d. 1.5
e. 0.5
f. 3
Engine trouble warning light indication and fuel injection system
operation
* The warning light flashes when any one of the conditions listed below is present and the start switch is pushed:
19: Blue/yellow ECU lead (broken or disconnected)
30: Lean angle sensor (latch up detected)
33: Faulty ignition
39: Fuel injector (open or short circuit)
41: Lean angle sensor (open or short circuit)
50: ECU internal malfunction (memory check error)
Checking the engine trouble warning light
The engine trouble warning light comes on for 3 seconds after the main switch
has been set to "ON". If
the warning light does not come on under these conditions, the warning light
(LED) may be defective.
a. Main switch "OFF"
b. Main switch "ON"
c. Engine trouble warning light off
d. Engine trouble warning light on for 3 seconds
Checking the stator coil
1. Disconnect:
Stator coil coupler
(from the wire harness)
2. Check:
Stator coil resistance
Out of specification → Replace the
crankshaft
position sensor/stator assembly.
a. Connect the pocket tester ( ×
1) to the stator
coil coupler as shown.
b. Measure the sta ...
Checking the front fork
1. Stand the vehicle on a level surface.
WARNINGSecurely support the vehicle so that there
is
no danger of it falling over.
2. Check:
Inner tube
Damage/scratches Replace.
Oil seal
Oil leakage Replace.
3. Hold the vehicle upright and apply the front
brake.
4. Che ...
Checking the primary driven gear
1. Check:
Primary driven gear "1"
Damage/wear Replace the
primary drive
gear and clutch housing as a set.
Excessive noise during operation
Replace
the primary drive gear and clutch housing as
a set.
...