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Mille R TPS setting mode faulty

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ZappaFrank66 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ZappaFrank66 Quote  Post ReplyReply Direct Link To This Post Topic: Mille R TPS setting mode faulty
    Posted: 25 Jul 2020 at 22:21
My bike won't start I'm going through all the trouble shooting and the bike  won't  enter diagnostics mode so I can set TPS. Connect jumpers and nothing changes on the right side display. 
 Also there's no EFI cycling on the display when I turned the  switch on like before
 The last time it ran  the bike would idle but as soon as I touched the throttle it would die. Meter checked the manifold pressure switch. No reading between center wire and outside wires, so I ordered a different sender. I've checked all the wiring and this is where I'm stuck.  
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Spoonz Quote  Post ReplyReply Direct Link To This Post Posted: 25 Jul 2020 at 23:04
All the diags connector does is earth a pin on the ecu to switch it to diag mode. If it's not switching and in the absence of the pump activity etc i suspect the ecu is down.  You sure you haven't blown a fuse during your testing. 

Have you messed with the ecu at all ?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ZappaFrank66 Quote  Post ReplyReply Direct Link To This Post Posted: 30 Jul 2020 at 17:41
Yes I had a intermittent short or open in the system causing front cyl misfire.... I ordered 2 ecu modules in my attempts to troubleshoot. It was a faulty pin on the harness.  Repaired that  with no issues for 1000 miles. Then bike died on highway... Tps setting/diag  mode does not come up. Bike will start but dies instantly with any throttle. Just received new/used map sensor. Still no way of setting TPS.  I will set it to the last marked position. So the electronics for diagnostics is within the ECU?  And the dash is just a display? Have swapped out two ecu modules.  No change 

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Spoonz Quote  Post ReplyReply Direct Link To This Post Posted: 30 Jul 2020 at 18:28
The ecu does all of the diag work and determines any fault codes and sends them to the dash. The dash detects the same earth connection via the diag connector and  changes the display mode so that you can see the codes. 

Are you using a different eeprom in each ecu you have tested or the same one ? 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ZappaFrank66 Quote  Post ReplyReply Direct Link To This Post Posted: 04 Aug 2020 at 09:47

 I am using the chip that came with each ecu.  I haven't switched the  chip at all. Another clue that just came came to mind ...my tach was not working on the ride when it last ran. 

Thankyou for your time BTW

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Post Options Post Options   Thanks (0) Thanks(0)   Quote ZappaFrank66 Quote  Post ReplyReply Direct Link To This Post Posted: 04 Aug 2020 at 09:52
Is there any way to adjust this TPS with a meter.? My marked setting doesn't seem to be working the range of this variable resistor is 34 Ω to 3.2 K
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Spoonz Quote  Post ReplyReply Direct Link To This Post Posted: 04 Aug 2020 at 15:43
Originally posted by ZappaFrank66 ZappaFrank66 wrote:

Is there any way to adjust this TPS with a meter.? My marked setting doesn't seem to be working the range of this variable resistor is 34 Ω to 3.2 K

Nope there isn't, but provided it shows a varying resistance it's probably not actually faulty and it won't stop a bike running even if out of adjustment generally.

You need to solve your root issue with the ecu. Maybe check the diag pin on the dash and ecu earths when you connect the diag connector and that one end of the diag connector is attached to the earth post on the frame.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote blacklines Quote  Post ReplyReply Direct Link To This Post Posted: 04 Aug 2020 at 17:05
There's this post, though I don't think it's the typical way to adjust the TPS. What he's trying to achieve feels like a rough and ready override of fuel maps. Particularly as you'd think the TPS can only identify between 0-100%. And if you make it start around 10% then you must be getting open throttle fuel while still at 90% throttle. And still the same fuel when at 100% throttle. But the base mv reading might be a starting point.


But like Spoonz says, I can't see a bad TPS adjustment causing it to cut out.
Owen
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