Gil Haugan Posted November 1, 2019 Report Share Posted November 1, 2019 My power valves do not seam to operate. I do not see any indication in the software that they are opening or closing. I don't think they have ever operated with the vipec box. I have checked the mechanical parts power valve system and they are ok. Wiring would be the only other possibility. I have a 2008 m1000 engine with the 800 vipec box. I have not changed the stock 800 vipec settings for the power valves. Everything else is working. Any thoughts. Quote Link to comment Share on other sites More sharing options...
Adamw Posted November 1, 2019 Report Share Posted November 1, 2019 I dont have much info in my files and I believe the AC800 ecu was completely unique hardware designed specifically for that vehicle so a lot of my Vipec general knowledge doesnot cross over. However, I would start by looking at the runtimes screen (F12) Auxilary tab and you will see Power valve position on the right hand side. I suspect this may only be commanded position rather than actual position but Im not 100% sure on that. I do see in the schematics there is a powervalve position sensor connected to the ECU but I dont know if that can be viewed in the software or is just something that works in the background. The power valve motor is connected to pins 29 & 30 on the B connector, so you can check across those pins for voltage - I would expect the multimeter to show +ve voltage when moving in one directon and -ve voltage when moving the opposite way. Quote Link to comment Share on other sites More sharing options...
Gil Haugan Posted November 5, 2019 Author Report Share Posted November 5, 2019 Thank you for your help. I will do some testing. Quote Link to comment Share on other sites More sharing options...
Gil Haugan Posted December 11, 2019 Author Report Share Posted December 11, 2019 It appears that everything is hooked up correctly and A4 and A5 are both on. If the ECU is powered up with an external battery would/should the power valves go through their cycling like when the engine is started with the stock? My thought is that if there is any mechanical issues with binding cables or the servo motor is rubbing on something and I could check voltages. Quote Link to comment Share on other sites More sharing options...
Gil Haugan Posted December 11, 2019 Author Report Share Posted December 11, 2019 I have manually applied power to the power valves and they operate. Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 12, 2019 Report Share Posted December 12, 2019 Im not sure if they do a reset/calibration on power up or not sorry, I have very little info about how this function works. The best I could suggest is set the power valve control settings to some very low RPM when the engine is idling and see what happens. Simon 1 Quote Link to comment Share on other sites More sharing options...
Gil Haugan Posted December 13, 2019 Author Report Share Posted December 13, 2019 On the ecu settings auxiliary outputs Aux 4 and 5 i have on both. I am i looking in the wrong place for when and how to open? Or is this the start up cycle i was talking about. Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 13, 2019 Report Share Posted December 13, 2019 The power valve is not anything to do with aux 4/5. Aux 4 is the water temp warning light and Aux 5 is the reverse light. Power valve settings are in the "power valve control" menu. Quote Link to comment Share on other sites More sharing options...
Gil Haugan Posted December 13, 2019 Author Report Share Posted December 13, 2019 hahaha, man am i a dummy. You highlighted A4 and A5 so thats all the further I looked. Ok, i will check that out. Quote Link to comment Share on other sites More sharing options...
Gil Haugan Posted December 14, 2019 Author Report Share Posted December 14, 2019 This what I have Quote Link to comment Share on other sites More sharing options...
Gil Haugan Posted December 16, 2019 Author Report Share Posted December 16, 2019 Looks like I need to look at the wiring again to make sure everything is proper. I did see that in the stock A800 setup the Auxiliary Outputs A# - Tacho is on and in my setup it is off. Could this have anything to do with it? Quote Link to comment Share on other sites More sharing options...
Gil Haugan Posted December 19, 2019 Author Report Share Posted December 19, 2019 What would be the chances that there actually is a problem with the ECU? Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 20, 2019 Report Share Posted December 20, 2019 Not impossible, but pretty unlikely. Did you check for voltage on pin 29 & 30 yet? Quote Link to comment Share on other sites More sharing options...
Gil Haugan Posted December 22, 2019 Author Report Share Posted December 22, 2019 I have +10.25 at idle volts across each of the wires 29 and 30. I have another power valve, so i hooked it up next to the machine. My thoughts that this would eliminate any possible mechanical binding. I opened the valves and started the machine, i expected to see the valves close at idle, no movement. With the engine running i moved the servo by hand pretty easily i would have been fighting the servo. Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 23, 2019 Report Share Posted December 23, 2019 11 hours ago, Gil Haugan said: I have +10.25 at idle volts across each of the wires 29 and 30. So do you have one multimeter probe on pin 29 and the other on 30 when testing? (you should) And you should also see this voltage change or reverse when you go above the RPM settings you have set in the power valve settings (you can set these to just above idle to check). Quote Link to comment Share on other sites More sharing options...
Gil Haugan Posted December 23, 2019 Author Report Share Posted December 23, 2019 Sorry, no I was just grounding the meter and testing each pin. I did lower the set point to 3000. Ok, i will try it again. Thanks for all the help. Quote Link to comment Share on other sites More sharing options...
Gil Haugan Posted December 23, 2019 Author Report Share Posted December 23, 2019 Just to make sure, I can disconnect the power valve 5 wire connection and check the out puts of 29 and 30 from the ECU? Or do in need to have the connector plugged in while testing? My next test was to plug the stock ecu in and see if it jogs the servo or not. Just to be certain, there is not a box that needs to be checked in the ECU setup to enable the power valves to operate? Right? Quote Link to comment Share on other sites More sharing options...
Gil Haugan Posted December 24, 2019 Author Report Share Posted December 24, 2019 I do not get any voltage across those 2 pins. I thought i did at first but it went to 0.000 volts. I switched to a stock ecu and I did get some 350mv. I did not remove the belt, so i could not rev it high enough to see if it switched to negative. I expected to see 10 to 12 volts. What should it be? I revved it to just below engagement of the clutch. Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 24, 2019 Report Share Posted December 24, 2019 You need to test under all states. You dont need to rev it high, just set the activation RPM low to test - say 500rpm or something so it activates at idle. Quote Link to comment Share on other sites More sharing options...
Gil Haugan Posted December 24, 2019 Author Report Share Posted December 24, 2019 I set the vipec box lower number to 3000 rpm. I did not look at the tach but i am sure i was above that. I did leave the upper number at 7200. Quote Link to comment Share on other sites More sharing options...
Gil Haugan Posted December 24, 2019 Author Report Share Posted December 24, 2019 I will set the lower number to 500 and try it again. Thank you for your patience. Quote Link to comment Share on other sites More sharing options...
Gil Haugan Posted December 24, 2019 Author Report Share Posted December 24, 2019 I just set the low to mid to 500 and saved to ecu. 0 volts Quote Link to comment Share on other sites More sharing options...
Gil Haugan Posted December 30, 2019 Author Report Share Posted December 30, 2019 Looking at the wiring diagram and the repair manual it says the power valves runs on power from the rectifier, it test 12 volts out. That circuit connects to pin 34 Low bus power on the B connector and that test 12V. I have nothing coming out of pins 29 and 30. I have read that if the ECU doesn't have the proper voltage it tries 3 times same with cable adjustment then it locks out. I have checked the servo with 12v power and it operates. I have tried hooked up the gauges and lights to make sure i don't have a high voltage condition, still no voltage to the servo. Is the stock 800 Vipec box setup with some of these limp mode triggers? I am starting to think that I need to send in the ECU for testing. Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 3, 2020 Report Share Posted January 3, 2020 I would set the power valve high to something below idle also as a test. If you get no voltage from 29/30 with that test then I would suggest you email [email protected] for their advice (may be on holiday now). As far as I know the arctic cat ecu is fully encapsulated in epoxy so may not be serviceable. Quote Link to comment Share on other sites More sharing options...
Gil Haugan Posted January 6, 2020 Author Report Share Posted January 6, 2020 I did, I tried to setting the low to 500 and the high to 1500. Still no voltage. If there is something wrong with it and it is not repairable, is there another ECU that I could make work? Quote Link to comment Share on other sites More sharing options...
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