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<blockquote data-quote="flyboypuoi" data-source="post: 782316" data-attributes="member: 25768"><p>So then! It turns out the engine management light was for a different reason.</p><p>I can never get the fault code when it's showing, the app always says "no codes stored on ECU0". But it seems that I can get it to show pending (unverified) faults sometimes. So after resetting the warning, I left it for a little bit and requested any pending faults.</p><p>And there it was:</p><p>[ATTACH=full]67424[/ATTACH]</p><p>Park/Neutral Position (PNP) Switch.</p><p>So obviously that's because the "5th gear sensor" is unplugged. This of course makes me feel like the rumour isn't true about the ECU leaning the fuel ratio in 5th gear. However, it may still be the case, if so, I'd be interested in finding out how the switch works. Perhaps I could trigger the "is plugged in" but not trigger the "is 5th gear".</p><p>To be honest though, I'm thinking it's just a myth. I think it's two wires, so the only way two signals could travel through that layout would be a variable resistance/voltage, kinda like how the airbags are tested.</p><p>[ATTACH=full]67425[/ATTACH]</p><p>Apparently there's another lean-out mode, based on the speed. So if I could find which wire reports the car speed to the ECU and break it, I could see some interesting results at high speeds. Or, everything will go wrong and the warning light will come on again.</p><p></p><p>Also, I've always wondered why the ECU reports the throttle to only go between something like 8% and 87%. Could this be calibrated properly and allow the ECU to deliver more power?</p><p></p><p>Sent from my F8331 using <a href="http://r.tapatalk.com/byo?rid=73708" target="_blank">Micra Sports Club mobile app</a></p></blockquote><p></p>
[QUOTE="flyboypuoi, post: 782316, member: 25768"] So then! It turns out the engine management light was for a different reason. I can never get the fault code when it's showing, the app always says "no codes stored on ECU0". But it seems that I can get it to show pending (unverified) faults sometimes. So after resetting the warning, I left it for a little bit and requested any pending faults. And there it was: [ATTACH type="full" alt="Screenshot_20200219-124300.jpeg"]67424[/ATTACH] Park/Neutral Position (PNP) Switch. So obviously that's because the "5th gear sensor" is unplugged. This of course makes me feel like the rumour isn't true about the ECU leaning the fuel ratio in 5th gear. However, it may still be the case, if so, I'd be interested in finding out how the switch works. Perhaps I could trigger the "is plugged in" but not trigger the "is 5th gear". To be honest though, I'm thinking it's just a myth. I think it's two wires, so the only way two signals could travel through that layout would be a variable resistance/voltage, kinda like how the airbags are tested. [ATTACH type="full" alt="Screenshot_20200219-124307.jpeg"]67425[/ATTACH] Apparently there's another lean-out mode, based on the speed. So if I could find which wire reports the car speed to the ECU and break it, I could see some interesting results at high speeds. Or, everything will go wrong and the warning light will come on again. Also, I've always wondered why the ECU reports the throttle to only go between something like 8% and 87%. Could this be calibrated properly and allow the ECU to deliver more power? Sent from my F8331 using [URL='http://r.tapatalk.com/byo?rid=73708']Micra Sports Club mobile app[/URL] [/QUOTE]
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