Flashing Lane Lights
in 912iS Technical Questions
7 years ago
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by RAYMOND SPEIGHT » 7 years ago
As feared we are nearing the barricade on this. Yes the engine is running to produce these voltages and the results are the same at 1700rpm idle to 3000rpm, although the low voltages between X8 & X9 seems to vary a bit.
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by Bill Hertzel » 7 years ago
You have swapped the generator Stator coils and swapped the Regulators and the voltage at X8-X9 has remained mostly the same.
This means that we are probably barking up the wrong tree.
Maybe reseating the HIC connectors would have an effect.
Otherwise, a swap out of a known working fuse box would be nice to see.
This is getting interesting!
Bill Hertzel
Rotax 912is
North Ridgeville, OH, USA
Clicking the "Thank You" is Always Appreciated by Everyone.
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by RAYMOND SPEIGHT » 7 years ago
Hi Bill
This situation has now entered its 6th month and is not resolved. The fault, ‘Generator Select failsafe’ for both A&B lanes, would seem to be to be a fairly straightforward problem to be sorted, with limited triggers to be checked out. The agent has provided substitute fuse box (with regulators) and ECU components in an attempt to narrow it down but both substitutions have made no difference. Some hours of data download sent have not generated substantive comment by Rotax, apart from reference to 'voltage drift' and suspicion about my installation.
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by Oleg K » 2 years ago
Does anyone know how this story ends? My engine has exactly the same symptoms. Total time 1900 hours. With the three-wire connectors coming from the generator disconnected, they have an alternating voltage of approximately 42 V (generator A) and 33 V (generator B). After the regulator, both give out about 14 volts.
After starting the engine, generator B runs. When the RPM increases to about 2500, when a switch to generator A should occur, there is no changeover and both Lines A and B begin to flash. There is no battery charge.
If the black connector (Alternator A) is disconnected while the engine is running, the engine will continue to run. Disconnecting the gray connector stops the engine.
I don't understand where to look for the problem.
36106_2_Fault.JPG (You do not have access to download this file.)
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by Oleg K » 2 years ago
Problem solved by replacing all three relays in the fuse box.
Thank you said by: RotaxOwner Admin
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