[viejoperro]

Found the PDA manufacture, maybe ask for a english manual?

http://www.jinbenteng.com/engling/111/Product3.asp

[Edofthenorth]

Ok I'm getting 5v on both map sensors input plugs. After unplugging them an running machine ran a little better now after placing plugs (map) back on the engine won't run no more no longer able to run at any speed

[viejoperro]

When you say both Map sensor, wich are you unpluging?, there is only one MAP, or better said inlet pressure sensor and the other one is the TPS Throttle position sensor. From the PDA error codes 107, 108 it is the MAP sensor wich is malfuntioning. Try to unplug one at the time, first the MAP, and run the engine, throttle it up and see the response, if the problem persist than connect the MAP unplug the TPS, same test. If we still have the problem than we have a more seriuos problem, could be the ECU? The PDA should have a special connector to plug it directly to ECU and run diagnostic on it, this considering the PDA comes with self powered battery cables. Check the current coming from the MAP sensor and see if you get on the +, 5V and on the ground a good (-) , if OK, than bypass the cables from the plug 5V and ground and messure the sensor line, it should give you different readings when you throttle the engine, since it messure the pressure difference the engine does when changing RPM.
keep testing, do you have a friend with the same atv or a 600, 550, same system to swap MAP or TAP or the total throttle unit? Keep the trail and error procedure, but it looks based on the sintoms that there is the MAP false reading, my best guess.

[viejoperro]

Ok I found this on manual to check MAP, code 107,108

[Cosmosdan]

I think you have a short it the wiring. Look for chewed wire, wet. Does the map have 3 or 4 pin connector? If only 3, than its just inlet pressure sensor. I don't think you should have voltage on more than one wire.

[Edofthenorth]

Sorry I've been out hunting an fishing. I jes borrowed a friends ecm plugged it in an still nothing so I'm going to go get a map sensor see what happens

[viejoperro]

Hello, Ok good to now, ECU is discarted, good think, lets try MAP sensor, best regards

[Cosmosdan]

Remember to look at the plug. 3 terminal than its a inlet pressure sensor. Hate to see you get the wrong part after waiting for it in the mail.

[Edofthenorth]

Ok village life finally got the map sensor that didn't do a thing... Think I've had it with this Chinese force.. Prob send it into anchorage dealer get fixed an sell..

[Cosmosdan]

I think the wiring is to blame. If you checked the harness and got 5v on two of the wires, I think it is shorted. Look at the pic I posted. 1 is 5v source power, 1 is ground and the other is going back to the ecu at .4 to 5v based on how much pressure it gets. I'm not sure if it's positive or negative pressure. If you could just recheck this, and still get 5v+ on two of them I would really suggest pulling the harness off the ecu and sensor and checking that you do a conunity test for each to make sure they aren't touching each other somewhere in the wiring. I know electrical problems can drive you nuts, but hate to see you get hosed trading it in. I the country, every time I have an electrical gremlin, I assume that a critter got to the wire.

[viejoperro]

Hello, sorry to hear that the MAP sensor didn't change anything  , I thought after all the sintoms we where on the spot, but no, sorry. If you still have patience I would keep looking for the fault and try to reapair the ATV, I think we are close. As said by cosmosdan it must something to do with wiring or sensors, and since you swap the CDU with same results that should be fine. We will be here to help an anyway possible. Regards