6 - 4
FI
ECU’S SELF-DIAGNOSTIC FUNCTION
The ECU is equipped with a self-diagnostic function in order to ensure that the engine control sys-
tem is operating normally. If this function detects a malfunction in the system, it immediately oper-
ates 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
• To inform the rider that the fuel injection sys-
tem is not functioning correctly, the engine
trouble warning light flashes when the start
switch is being pushed to start the engine.
• If a malfunction is detected in the system by
the self-diagnostic function, this mode pro-
vides an appropriate substitute characteristic
operation, and alerts the rider of the detected
malfunction by illuminating the engine trou-
ble warning light.
• After the engine has been stopped, the low-
est fault code number displays on the FI
diagnostic tool. This fault code remains
stored in the memory of the ECU until it is
deleted.
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.
EAS00900
Engine trouble warning light indication and FI system operating condition
1
Engine condition
Warning light
indication
FI operation
Vehicle operation
Operates
(cranking with elec-
tric starter)
Flashing
Operation stopped.
Unable
Remains ON
Operated with substi-
tute characteristics in
accordance with the
description of the mal-
function.
Able
Stopped
Flashing
(indicate the fault
code)
—
—
<Example> 42
Light ON
Light OFF
Summary of Contents for YFM700RV 2009
Page 1: ...YFM700RV SERVICE MANUAL 1S3 28197 E0 ...
Page 34: ...2 11 SPEC ENGINE SPECIFICATIONS Cylinder head tightening sequence 1 3 2 4 5 7 8 6 ...
Page 52: ...2 29 SPEC OIL FLOW DIAGRAMS 1 Oil delivery pipe 2 Oil filter 3 Oil pump 2 3 A A A A 2 1 ...
Page 55: ...2 32 SPEC OIL FLOW DIAGRAMS 1 Balancer 1 2 Crankshaft 2 1 ...
Page 408: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN ...