Service manual

CANDoo Professional
225
Keys Tab
3.1.4.3.2.1)
(See
3.1.4.3.2.2.1)
Using features in the Keys tab:
Please refer to individual topics in each subsection for details
3.1.4.3.2.2.1 Overview
CANDooPro > Vehicles > Sea-Doo Watercraft > 4 Stroke (4-TEC) Models(See 3.1.4) >
Working with CANDooPro(See 3.1.4.3) > Diagnostic Session Details(See 3.1.4.3.2) >
Keys Tab(See 3.1.4.3.2.2) >
Overview
(See
3.1.4.3.2.2)
(See
3.1.4.3.2.2.2)
Overview:
The DESS keys/lanyards contain two distinct critical parts:
 A powerful magnet
 A microchip with a 64 bit serial number
The DESS post on the vehicle contains a reed switch, a center post, and a grounding ring around
the outside of the post. When a DESS key is inserted on the post, the magnet in the key closes the
reed switch in the DESS post. This "wakes up" the ECU from hibernation, and the ECU sends out
a signal on the center of the DESS post. Since the DESS key makes contact with the center lug
and the grounding ring, it sees this signal from the ECU, and it sends its internal serial number
information to the ECU. The ECU compares this serial numbers to the serial numbers contained in
its internal list of keys.
If the serial number of the key matches one contained in the ECU internal list of key serial
numbers, the ECU gives the 2-beep signal and allows the operation of the vehicle. However, if the
serial number does not match, it gives the single long beep, and does not allow operation of the
vehicle.
The 4-TEC ECU allows storing up to 8 key serial numbers in its list. CANDooPro allows you to
manage the list of keys, to add new keys up to a total of 8, and to erase keys.
The 4-TEC models have two main key operation profiles, Normal and Learning . (You can also
program Rental Keys on the 2007+ GTI Rental PWC )
Normal Keys allow full operation of the watercraft.
Learning keys limit the amount of speed to approximately 35 MPH, perfect for learning/first time
users (or that close friend or relative that always manages to ruin your stuff...)