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FJR Motorcycle Forums
Technical & Mechanical Problems
RPM's at 75-80 mph?
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<blockquote data-quote="ionbeam" data-source="post: 204683" data-attributes="member: 277"><p>There is a single serial data line between the ECU and the Meter. The serial line has to go through a MUX Decoder (signal demultiplexer) to break out the various signals and values. The owners manual refers to the "Electric Speedometer" and "Electric Tachometer". The Owners Manual says:</p><p></p><p> There is similar text about the speedometer.</p><p>If you look at the FSM (Factory Service Manual) you should see in a couple of places in the manual that the meter assembly receives a single serial data line from the ECU, the rest of the indicators and functions receive their signals from switches.</p><p></p><p>I have a couple of burned out lamps in my Meter Assembly :angry2: so I will have it apart once the temperatures get above 10°F and then there won't be any secrets <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="ionbeam, post: 204683, member: 277"] There is a single serial data line between the ECU and the Meter. The serial line has to go through a MUX Decoder (signal demultiplexer) to break out the various signals and values. The owners manual refers to the "Electric Speedometer" and "Electric Tachometer". The Owners Manual says: There is similar text about the speedometer. If you look at the FSM (Factory Service Manual) you should see in a couple of places in the manual that the meter assembly receives a single serial data line from the ECU, the rest of the indicators and functions receive their signals from switches. I have a couple of burned out lamps in my Meter Assembly :angry2: so I will have it apart once the temperatures get above 10°F and then there won't be any secrets :) [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
RPM's at 75-80 mph?
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