Ignition Module wiring

by Mark Jackson in 912 / 914 Technical Questions 8 years ago

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Re: Ignition Module wiring

by Guy Sirois » 7 years ago

Guy Sirois

2 10 0

This has still not been resolved it seems.
I just downloaded the Rev.5 dated March 2017 and the schematic still shows the errors.
It would be nice to finally have a diagram that totally agrees with other drawings, and with the engine itself.

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Re: Ignition Module wiring

by Al Snyder » 6 years ago

Al Snyder

2 3 3

Hello Mark,

Have you ever paired a new module-A with and old module-B (or, vice-versa)?

We have a production 28 / 2001 model Rotax 912 ULS. Recently, we've replaced the sprag clutch. Afraid to brake it again, we also got a new Soft Start type module-A. The idea was to start w/SSM (module-A), then switch to BOTH.
There are 2 separate switches for L & R (and a rotary master switch). "R" commands the module-A.

Unfortunately, there were no instructions available. We've made the connections (and some corrections) as shown in the attached PNG (changed from 6+4+1 style sockets to 6+6 style).

However now, when only "R" is ON, all 8 plugs spark. When only "L" is ON, no spark at all. Moreover, this way, I'm afraid ATDC (SSM) and BTDC timings of R and L are mixed.

I am suspecting the connections to the twin black coils (marked as 16). From left black coil to new module, the wire goes through the connector, crosses the lower wire group and goes in the top group of wires in the module-A. Whereas, the old one used to go in the lower group instead.

New Module-A # 965444 16.1155 (6+6 type connectors)
Old Module-A # 966721 01.1195 (6+4+1 type connectors)

Kind Regards,
Al

912_ULS_ModuleConnections_20172010_CorrectedMixed_2018-10-09.png (You do not have access to download this file.)

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Ignition Module wiring

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