ECU DF70 gone/defect or not ?

[jo.bergan]

I have a 2000 mod Suzuki DF70. My local service partner says that the ECU (Engine Control Unit) is not working. When I turn on ignition only "Check Engine" lamp lights up. No sound or any other signals. It dos not start!, but startengine turns the engine around. When it worked before, it first showed the runtim hours with a combination of light and RPM readout, and with a beeeep sound, then temp and oil light came on. Then it started and worked. I have tried two other used ECUs. These migh not have the total correct number, but non of them gave any other than check engine light. Could my ECU still be ok and the check engine light be related to something else, and if, what ?, New ECU is very expencive and I can't afford it. I would be very pleased if someone, from the information above, could tell me if my ECU is defect or not?, eventually, how to test the ECU?

Regards
Jo

[boats.net]

Does engine run ok? does gauge display engine data when engine running?

[jo.bergan]

No, It does not start at all. Starter turns engine around, but there is no light/signals on the instrument, and it dos not start. What could be wrong ?

[catacom225]

Most unlikly your ecu is bad, try checking your ground [earth] connections and wireing

[jo.bergan]

Thanks.

If I am to search the marked for used ECUs. Do all numbers has to be the same?, See attatched image:
Thu numbers on my unit consist of three lines
99E14 (part of Suzuki part number 33920-99E14)
F8T90076 (do anyone know what this line refer to ?)
9Y13 (and this line ?

I found a part from a 99 70HP Evinrude (probably produced by Suzuki). It had the two first lines identical, but not the last line. Is this imortant ?

[jo.bergan]

Does anyone know where I can get the wiering plan and ground points for the 2000 Suzuki DF70. Is there a propper manual to buy ?

[boats.net]

Can order manual at Genuine Suzuki Manuals