Yamaha WaveRunner FX Cruiser SHO, Service Manual

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E
GEN
INFO
Warning control
Overheat warning control
The overheat warning control is activated under the following conditions.
• If the engine temperature rises rapidly within several seconds.
• If the thermoswitch is on.
• If the exhaust cooling water temperature exceed 75 ° C (167 ° F)
If the overheat warning control is activated, the overheat warning indicator comes on and the buzzer
sounds.
In addition, the opening angle of the ETV is regulated and the maximum engine speed is limited to
approximately 3,500
– 3,800 r/min by the ECM.
If the engine is turned off during overheat warning control, the engine can be restarted.
The overheat warning control is deactivated under the following conditions.
• If the engine is turned off within 30 seconds.
• If the engine temperature is below 140 ° C (248 ° F) with the thermoswitch off.
• If the exhaust cooling water temperature is below 70 ° C (158 ° F) with the throttle fully closed.
Oil pressure warning control
The oil pressure warning control is activated under the following conditions.
• If the engine speed exceeds 4,500 r/min.
• If the ETV is open.
• If the oil pressure switch is on.
If the oil pressure warning control is activated, the oil pressure indicator on the multifunction meter
comes on and the buzzer sounds.
In addition, the opening angle of the ETV is regulated and the maximum engine speed is limited to
approximately 3,500
– 3,800 r/min by the ECM.
If the engine is turned off during oil pressure warning control, the engine can be restarted.
The oil pressure warning control is deactivated if the engine is turned off and electric power to the
ECM is stopped or when the engine is restarted and the oil switch is off.
ETV failure control
The ETV failure control is activated when a malfunction in the ETV system is detected or a malfunc-
tion occurs. When the ETV failure control is activated, the maximum engine speed is limited to
3,000 r/min.
If the ETV failure control is activated, the opening angle of the ETV is fixed to the default opening
angle and ignition timing control is activated.
The ETV failure control is not deactivated until the engine is turned off and electric power to the
ECM is stopped (30 seconds or more after the engine has been turned off).
Technical tips