Power control strategy, Security, Idle stepper motor setting (v3.52p or later – MoTeC PWC Plug-In ECU User Manual

Page 25: Or later), Motec

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18

Sea-Doo 2004 – 2009 Installation

Power Control Strategy

The standard Sea-Doo RXP, RXP-X and RXT use an Ignition Lanyard with an
immobiliser function to power up the craft. If the Ignition Lanyard is inserted,
pressing the Start/Stop Button on the left handlebar will start and stop the
engine.

The installation of the PWC Plug-In ECU solution still uses the
Lanyard but without the immobiliser function. It follows the same strategy as
the 2007 model Sea-Doo crafts:

• Power is continuously applied to the ECU while the Lanyard is connected.

Tuning adjustments, log downloads, and ECU configuration file
may all be performed without interruption.

• If the engine is not started, or is stopped for longer than 4 seconds, the

M400 Marine ECU sounds the warning beeper in repeated bursts of 4
short pulses.

• Power is removed from the ECU only by removing the Ignition Lanyard.

Security

The Sea-Doo RXP, RXP-X and RXT use an encoded Ignition Lanyard which
is paired with the factory ECU.

The PWC Plug-In installation does not include the immobiliser function
important to secure the craft when not in use for example by
IGN4 device from the wiring harness.

Idle Stepper Motor Setting (V3.52P or later

If the PWC shows stalling behaviour when the throttle is closed suddenly, it
may help to reset the throttle stop screw for a higher base idle RPM setting.

The standard throttle stop screw has a tamper-proof cover and is very
securely glued to the throttle body with loctite. The screw can be very carefully
removed (warning - risk of breakage), and replaced with an M5
M5 lock nut.

To reset a newly installed stop screw

Connect to the ECU Manager program on a PC.

Observe the Throttle Position (TP%) in the Sensors list, or press ‘V’
for the Sensor View screen.

Wind in the stop screw until the throttle position reads just over zero.

Wind back until exactly zero is shown.

MoTeC

Ignition Lanyard with an

immobiliser function to power up the craft. If the Ignition Lanyard is inserted,
pressing the Start/Stop Button on the left handlebar will start and stop the

In ECU solution still uses the Ignition

Lanyard but without the immobiliser function. It follows the same strategy as

Power is continuously applied to the ECU while the Lanyard is connected.
Tuning adjustments, log downloads, and ECU configuration file downloads

stopped for longer than 4 seconds, the

M400 Marine ECU sounds the warning beeper in repeated bursts of 4

he Ignition Lanyard.

use an encoded Ignition Lanyard which

In installation does not include the immobiliser function. It is

for example by removing the

or later)

the PWC shows stalling behaviour when the throttle is closed suddenly, it

may help to reset the throttle stop screw for a higher base idle RPM setting.

proof cover and is very

. The screw can be very carefully

risk of breakage), and replaced with an M5 set screw with

%) in the Sensors list, or press ‘V’

Wind in the stop screw until the throttle position reads just over zero.

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