Section 08
ENGINE MANAGEMENT (4-TEC)
Subsection 02
(OVERVIEW)
SMR2003-026_08-02A.FM
08-02-7
The system is quite flexible. Up to 8 safety lan-
yards may be programmed in the memory of the
watercraft EMS ECU. They can also be erased in-
dividually.
The EMS ECU also offers a special safety lanyard
— the Sea-Doo LK™ (learning key) — which can
be programmed so that the vehicle can be run only
at a limited speed — approximately 55 km/h
(35 MPH). Such feature is ideal for first time riders
or renters.
NOTE:
If desired, a safety lanyard can be used on
other watercraft equipped with the DESS. It only
needs to be programmed for that watercraft.
When connecting a safety lanyard cap on the post,
the DESS is activated and will emit audible signals:
– 2 short beeps indicate a working safety lanyard.
Engine starting can take place.
– 1 long beep indicates a wrong safety lanyard is
being used or that something is defective. En-
gine starting is not allowed.
The EMS ECU features a self-diagnostic mode.
Refer to DIAGNOSTIC PROCEDURES section for
more information.
The memory of the EMS ECU is permanent. If the
battery is disconnected, no information is lost.
When ordering a new EMS ECU from the regular
parts channel, the DESS circuitry will be activated.
Engine Starting
If the EMS ECU recognizes a valid safety lanyard,
it allows engine to start when the start/stop button
is pressed.
If start/stop button is held after engine has started,
the EMS ECU automatically stops the starter
when the engine speed reaches 1600 RPM.
If start button is activated while the throttle lever
is depressed more than 65%, the engine will not
be allowed to start.
Engine RPM Limiter
The EMS ECU will limit the maximum engine
speed.
Engine Stopping
There are 2 ways to stop the engine.
Press and hold start/stop button or remove the
safety lanyard cap from its post.
Low-Oil Pressure Warning Device
When the oil pressure falls under a certain level,
the EMS ECU sends out signals to the beeper and
to the information center gauge. Additionally the
engine goes in limp home mode.
High Coolant Temperature and EGT
Warning Device
When the coolant temperature or the exhaust gas
temperature is getting to high, the EMS ECU
sends out signals to the beeper.
WARNING
When programming a Sea-Doo LK™ (learning
key), use only a lanyard that is identified for
that purpose. Otherwise, a customer could
use a vehicle with a greater speed than he was
expecting.
www.SeaDooManuals.net
Summary of Contents for 2003 GTI LE RFI
Page 1: ...www SeaDooManuals net ...
Page 767: ...NOTE www SeaDooManuals net ...
Page 768: ...NOTE www SeaDooManuals net ...
Page 769: ...F00Z0D 2003 GTI MODEL WARNING www SeaDooManuals net ...
Page 770: ...F00Z0C 2003 GTI LE MODEL WARNING www SeaDooManuals net ...
Page 771: ...F00Z0E 2003 GTI LE RFI MODEL WARNING www SeaDooManuals net ...
Page 772: ...F00Z0J 2003 RX DI MODEL WARNING www SeaDooManuals net ...
Page 773: ...F00Z0I 2003 GTX DI MODEL WARNING www SeaDooManuals net ...
Page 774: ...F00Z0K 2003 XP DI MODEL WARNING www SeaDooManuals net ...
Page 775: ...F00Z0F 2003 GTX 4 TEC MODEL WARNING www SeaDooManuals net ...
Page 776: ...F00Z0G 2003 GTX 4 TEC MODEL WITH AUXILIARY DESS MODULE WARNING www SeaDooManuals net ...
Page 777: ...F00Z0B 2003 GTX 4 TEC AND GTX 4 TEC SUPERCHARGED MODELS WARNING www SeaDooManuals net ...
Page 779: ...www SeaDooManuals net ...