Advanced Self-Diagnostic Mode
It needs to be enabled manually. Proceed as follows:
1. Remove safety lanyard cap from watercraft switch.
2. Press 5 times on the watercraft start/stop button.
NOTE: 1 short beep and 1 long beep must be heard. They validate beginning of diagnostic mode.
3. Install safety lanyard on watercraft switch.
4. Press the watercraft start/stop button again.
NOTE: If everything is correct, engine will start. Otherwise, refer to the following chart.
If you need to listen again the coded beeps, remove safety lanyard and repeat the procedure to activate
the diagnostic mode.
If there is more than one problem, the MPEM will send only one error code. When the problem is solved,
the MPEM will send a second code and so on until all problems are resolved.
SIGNAL CAUSE REMEDY
No beep • Engine actually starts. • Everything is correct.
1 long and
1 short beeps
• No safety lanyard has ever been
programmed in watercraft MPEM.
• Use programmer and program a safety
lanyard. This code can occur only
when you receive a new MPEM from
the factory and no key has ever been
programmed.
2 short beeps • MPEM can not read the digital code of
the safety lanyard cap or the magnet is
defective.
• Check safety lanyard cap condition
with the MPEM programmer. Replace
safety lanyard if reported defective.
• Mixed wires at safety lanyard switch
connectors or bad connections.
• Check switch wiring harness.
2 long beeps • Wrong safety lanyard or bad
connection of the DESS wires.
• Use the safety lanyard that has been
programmed for the watercraft. If the
problem is not resolved, check safety
lanyard cap condition with the MPEM
programmer. Replace safety lanyard if
reported defective.
3 short beeps • Wiring harness of DESS switch is
grounded or there is a short circuit.
• Check wiring harness and safety
lanyard switch.
This is from a manual for my 99 GSX ltd.
