08 420 Rancher cranks, no start.

[Rodney Wease 0]

 My 08 420 Rancher cranks but won't start. MIL comes on for few seconds then goes out. No codes. Have flashing - on the gear indicator. Don't hear startup buzz or fuel pump when first turning on switch. Can someone please help me with the problem?

[jeepwm69 7,732]

Welcome aboard.  Is the - on the gear indicator blinking a pattern?  Count the blinks.  Should be a certain number of blinks, then a pause.

 

Also, try tapping on the fuel injector relay, which back around the ECU/battery compartment.  It's a black rectangle. 

[Rodney Wease 0]

1 hour ago, jeepwm69 said:

Welcome aboard.  Is the - on the gear indicator blinking a pattern?  Count the blinks.  Should be a certain number of blinks, then a pause.

 

Also, try tapping on the fuel injector relay, which back around the ECU/battery compartment.  It's a black rectangle. 

Ok, I'm working on it now, I have the service manual gonna follow the troubleshooting, only have a volt meter. Do what I can. Thanks a lot for responding. I'm not the sharpest knife in the drawer. 

[Rodney Wease 0]

Ok,tapped around on the fuel relay, nothing. The - flashing has no pattern. Mil and temp lights come on then go off. Neutral light comes on. Don't hear the start up sound or fuel pump. Take any or all suggestions if ya think of something. I'm gonna start with step A. Troubleshooting lol. Thank ya , Sir.

 

[Melatv 797]

@Rodney Wease Hi -- try this take a jumper wire -- find the ign. coil -- Bl/R wire on the coil leave the Bl/R  on the coil -- just shove the jumper in along side the Bl/R terminal -- other end of jumper place on the positive of battery -- start the atv --- is atv FE or FM

[Rodney Wease 0]

Ok,tapped around on the fuel relay, nothing. The - flashing has no pattern. Mil and temp lights come on then go off. Neutral light comes on. Don't hear the start up sound or fuel pump. Take any or all suggestions if ya think of something. I'm gonna start with step A. Troubleshooting lol. Thank ya , Sir.

 

Is a FE. MELATV, thanks , I'll try this tomorrow, just put everything away. And thank you jeepwm69. This 420 is my legs around the farm. Having a bad luck run on equipment. Wife went to mow, deck won't engage.  That's 2 tractors, 2 riding mowers, 4-wheeler and my 91 Caddy lost it's brakes. Second cutting of hay needs started and fooling around.lol. Thanks guys, we'll hit it again tomorrow.  Have a great evening. 

 

Edited August 23 by Rodney Wease

[jeepwm69 7,732]

1 hour ago, Melatv said:

@Rodney Wease Hi -- try this take a jumper wire -- find the ign. coil -- Bl/R wire on the coil leave the Bl/R  on the coil -- just shove the jumper in along side the Bl/R terminal -- other end of jumper place on the positive of battery -- start the atv --- is atv FE or FM

 

Try this Rodney.   Mel has helped me get through some real head scratchers on the 420's.

[Rodney Wease 0]

 I took a jumper from the Bl/R at the coil and hooked the other end to battery +.  Would not start. When I turned the ignition on, I'm not hearing the startup noises or the fuel pump running. I did however find some wires that the coating was wore off . I had looked over the wiring earlier,  did not see this. It was about six wires coming from the black 33p ECM/PCM. The wire looked like it had been exposed for a while. QUESTION: Should I strip these wires back and cut out the sections that were exposed, splice in new wire? It's stran wire and was a little corroded. I seen no burnt places where the wires might of shorted..

 I had little time today, hopefully I'll work on it tomorrow. Again, thank you guys for all the input. Going back to troubleshooting via manual. Will be looking for any suggestions that come my way. I'm about ready for a rubber room. Have a great evening. 

[Melatv 797]

@Rodney Wease cutting the wires would leave you a bunch of connections-- clean the copper wires -- use liquid tape on the wires -- then use rubber tape on the wires.

[Melatv 797]

Hi @Rodney Wease Disconnect the positive wire off the battery when doing your work

[Rodney Wease 0]

I got ya, Mel. I'll run in to town and get some of the liquid tape. Will do what you are saying. Any other ideas what's up with the flashing - on the gear indicator and the fuel pump. I checked the angle sensor.  It seems ok , by the manual. Thank you so much for the help. I need all I can get.

[Melatv 797]

HI -- Long & short blinks -- count the long and short blinks will give you a code to look up

[Rodney Wease 0]

Well sir, there is no pattern to the flashing - . I could not find anything like the liquid tape. I did however brush the exposed wiring very well , taped it and checked continuity of the wires. Still have the same issues. I'm trying to get ahold of some guys hoping one might have a HDS tester. Again, thank you for the help. Will be back at it, hopefully tomorrow. 

[Melatv 797]

Hi -- no flashing pattern -- PCM is not taking to the display -- have you checked all the fuses -- easy way is to turn the key on -- and use your meter -- you will see two little gray dots on top of the fuse, check each dot for 12 VDC -- you don't need a HDS tester -- but it would help

[Rodney Wease 0]

 

Well sir, there is no pattern to the flashing - . I could not find anything like the liquid tape. I did however brush the exposed wiring very well , taped it and checked continuity of the wires. Still have the same issues. I'm trying to get ahold of some guys hoping one might have a HDS tester. Again, thank you for the help. Will be back at it, hopefully tomorrow. 

[Rodney Wease 0]

 Fuses was one of the first things I checked. The stop engine relay and the fuel relay are combined on this atv. I'm gonna look for a pin out for it, or the test procedure in the manual. I didn't get to mess with it today, as I was helping a neighbor all day. There is a wire that is for communication to the meter/display , I'll check it when I get back on it. I do thank you for all the help. There's a lot I don't know about this atv. Never really had to work on one. To many sensors.  Thanks and have a great day.

[jeepwm69 7,732]

17 hours ago, Rodney Wease said:

 Fuses was one of the first things I checked. The stop engine relay and the fuel relay are combined on this atv. I'm gonna look for a pin out for it, or the test procedure in the manual. I didn't get to mess with it today, as I was helping a neighbor all day. There is a wire that is for communication to the meter/display , I'll check it when I get back on it. I do thank you for all the help. There's a lot I don't know about this atv. Never really had to work on one. To many sensors.  Thanks and have a great day.

 

That "jumper wire" from battery + to the red/black coil wire effectively bypasses that relay.  That's a trick Mel showed me several years ago when I was fighting my wife's old DCT Rancher.

 

I agree the new EFI machines are not fun for to troubleshoot for us non-electrically inclined folks.   That said, better doing it yourself than paying a shop $100/ hour as they slowly ease through the troubleshooting.

[Rodney Wease 0]

Hey there Jeepwm69, just letting you know, I'm gonna work on the Rancher today. I will post what I find. Maybe help some other poor soul out. I do want to thank you and Mel for the help. Would appreciate anything you might think of for me to try. I'm starting over at the beginning of the troubleshooting guide. Just in case I either did something wrong or missed something.  Have a great Labor day weekend. 

[Rodney Wease 0]

Hello all, I'm back. Still having issues with my 08 420fe es rancher. I've had little time to work on it, but I have followed the manual in troubleshooting as best as I can. Using a multimeter.  I can not find any problems. But still - flashing on shift indicator . No patern for a code. Manual says when this happens, check communication wire. Check! Also when turn key,  do not hear the fuel pump. The mil and temp comes on for a few seconds then goes out. The only thing I haven't found in manual yet is how to check the engine stop/ fuel relay itself. Like ohms between pin outs. I am going to start searching for a new PCM. 

[jeepwm69 7,732]

18 hours ago, Rodney Wease said:

Hello all, I'm back. Still having issues with my 08 420fe es rancher. I've had little time to work on it, but I have followed the manual in troubleshooting as best as I can. Using a multimeter.  I can not find any problems. But still - flashing on shift indicator . No patern for a code. Manual says when this happens, check communication wire. Check! Also when turn key,  do not hear the fuel pump. The mil and temp comes on for a few seconds then goes out. The only thing I haven't found in manual yet is how to check the engine stop/ fuel relay itself. Like ohms between pin outs. I am going to start searching for a new PCM. 

 

Did you try that jumper wire from battery + to the red/black wire on the coil (leave the connector on the coil, just slide it back enough to stick the jumper wire in there)?

 

That will bypass the relay and the rollover sensor, both of which will cut spark.

 

That said, if your meter is reading -- I don't know if you will get spark.   Have you tried manually shifting the transmission with a 12mm socket on the shift shaft?  It's where a footshifter would be on a manual 420.

[Melatv 797]

HI @Rodney Wease do have 12DCV on the Bl/R wire on the ign. coil with the key on?