
7 - 3
FI
FUEL INJECTION SYSTEM
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.
• To inform the rider that the fuel injection system 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 provides an
appropriate substitute characteristic operation, and alerts the rider of the detected malfunction by
illuminating the engine trouble warning light.
• After the engine has been stopped, the lowest fault code number appears on the LCD meter.
Once a fault code has been displayed, it remains stored in the memory of the ECU until it is
deleted.
EAS00900
Engine trouble warning light indication and FI system operating condition
* The warning light flashes when any one of the conditions listed below is present and the start
switch is pushed.
12: Crankshaft position sensor
19: Broken or disconnected blue/yellow lead of
the ECU
30: Lean angle cut-off switch
(latch up detected)
33: Faulty ignition
39: Fuel injector
(open or short circuit)
41: Lean angle cut-off switch
(open or short circuit)
50: ECU internal malfunction
(memory check error)
Warning light
indication
ECU’s operation
FI operation
Vehicle operation
Flashing*
Warning provided
when unable to start
engine
Operation stopped
Unable
Remains ON
Malfunction detected
Operated with substi-
tute characteristics in
accordance with the
description of the mal-
function
Able/Unable depend-
ing on the self-diag-
nostic fault code
Содержание 2004 YP400
Страница 1: ...2004 YP400 S 5RU1 AE1 SERVICE MANUAL ...
Страница 2: ......
Страница 8: ......
Страница 9: ...GEN INFO 1 ...
Страница 11: ...GEN INFO ...
Страница 28: ...SPEC 2 ...
Страница 30: ...SPEC ...
Страница 50: ...2 20 SPEC Camshaft cap tightening sequence Cylinder head tightening sequence TIGHTENING TORQUES ...
Страница 77: ...CHK ADJ 3 ...
Страница 137: ......
Страница 138: ...CHAS 4 ...
Страница 210: ......
Страница 211: ...ENG 5 ...
Страница 286: ...COOL 6 ...
Страница 288: ...COOL ...
Страница 299: ...FI 7 ...
Страница 301: ...FI ...
Страница 342: ...ELEC 8 ...
Страница 378: ...8 34 ELEC LIGHTING SYSTEM ...
Страница 404: ......
Страница 405: ...TRBL SHTG 9 ...
Страница 415: ......
Страница 416: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN ...