[scottd]

I'm getting a code of 0-746. bike seems to run fine, just wondering what this code means. any help would be great, thanks

 

[fswan]

I'm getting a code of 0-746. bike seems to run fine, just wondering what this code means. any help would be great, thanks

Is your turf mode working OK? There should another number under the '746', either 3, 4, or 5.

 

[scottd]

i found that the plug in the back had come unplugged so everything is good now. thanks

 

[jg1981]

Having issues with this code 746 5. machine goes into awd and two wheel locked bot will not respond to turf mode. I took the switch apart and cleaned the contacts. Checked the 2 wire plug that goes to the turf actuator on the engine has a constant 11.70 volts with the machine off but key on. Last week the little gray box would start randomly clicking then it stopped all the modes worked fine till yesterday. check engine light came on and went off three times before coming on and staying on. Any pointers would be greatly appreciated

 

[scottd]

mine was just unplugged under my bed..i am not real good with electrical issues.. but check that box that was clicking

 

[jg1981]

i see the box has 3 wires going in and 2 coming out. When i first turn the key on the actuator clicks to to unlock the rear weather the switch is in 2 wheel locked or turf mode i just went out to double check. I had to put the switch in awd to back out a rough snow and ice spot I could here the front kick in. Do you know how to test this little box?

 

[jg1981]

While typing the last post i thought about taking a pick and spreading the pins and sockets on the leads that come out of that little box. Sure enough went out and did it darn thing worked like it should engine light went out right as i turned the key on. Kinda makes ya wanna have a gas spill and tip back a couple cold ones after 8 hrs of trying to track this B/S down in a machine thats wired back asswards. Thanks Anyways for the input.

 

[jg1981]

Well I guess this issue in not fixed on my machine. Light came back on tonight. I found if I disconnect the silver relay box and plug it back in the engine light will go out. But the machine automatically goes into turf mode when I turn the key on I can hear the cylinoide click. Doesn't matter if the switch is in 2 wheel locked or turf mode. The turf mode icon on speedo only comes on when turf mode is selected by the switch. I took the cylinoide out of the diff just to verify that in fact it was working. Seems it's not getting signal from either the switch or that little silver box.
Any suggestions as to what could be going on.

 

[jg1981]

The code that's showing is 746-5

 

[Toxic-21]

The silver box is the turf mode driver, it is a sealed unit, there is a testing procedure for it.
But it sounds like it has a short internally.
There have been several problems with the turf mode driver.

 

[jg1981]

Called the dealer today talked to the tech gave him the info that I have found while trying to trouble shot it for two days. Sense there is voltage coming out of the silver box. He stated that it had to be greater than 11 volts but not to exceed 12 volts it sits at 11.70v he said from that it sounds like it's the silonoide that screws into the diff. No blown fuses not responding to the dash switch when placed in 4 wheel the front pulls just fine. They are going to order in the silonoide and call when it comes in to set a time to bring it to them sense I live 1 1/2 from them. I will post what the end result of this issue seems to be.

 

[Dseldoc]

I have a 2016 570 EPS with turf mode, so I will use that as my point of reference. According to my manual and schematic, on the three-wire plug, pin A is 12 volts with ignition on, pin B goes to ECU (control) and Pin C goes to chassis ground.
When you put the switch in turf mode, the switch sends a signal to the ECU, and the ECU signals the solenoid driver to supply voltage to pin A of the two-wire plug. Pin B is solenoid ground.
You can test solenoid operation by supplying 12 volts to pin A while grounding pin B with the solenoid unplugged. The manual is very specific in stating that you must not supply voltage to the solenoid for more than one second. Presumably, the driver only supplies a short term voltage to the solenoid as well. If you remove the solenoid while making the test, you will see if the solenoid plunger is actuating.
If you have constant voltage at the two-pin plug, I would suspect the solenoid driver.
That's about all I know or can glean from the manual.

 

[Dseldoc]

I have a 2016 570 EPS with turf mode, so I will use that as my point of reference. According to my manual and schematic, on the three-wire plug, pin A is 12 volts with ignition on, pin B goes to ECU (control) and Pin C goes to chassis ground.
When you put the switch in turf mode, the switch sends a signal to the ECU, and the ECU signals the solenoid driver to supply voltage to pin A of the two-wire plug. Pin B is solenoid ground.
You can test solenoid operation by supplying 12 volts to pin A while grounding pin B with the solenoid unplugged. The manual is very specific in stating that you must not supply voltage to the solenoid for more than one second. Presumably, the driver only supplies a short term voltage to the solenoid as well. If you remove the solenoid while making the test, you will see if the solenoid plunger is actuating.
If you have constant voltage at the two-pin plug, I would suspect the solenoid driver.
That's about all I know or can glean from the manual.

Went out with a good digital volt meter and thought I'd see what was really going on with the turf solenoid driver. I found I was mistaken about how it functions. Back probed pin A (Sol + red wire) of the 2-pin connector with the ignition on, engine off, and found battery voltage (12.3V). Did the same with pin B (Sol - blue wire) and found the same voltage with ignition on, engine off. Voltage did not change at either pin, no matter which position the switch was in. When the gearshift lever was placed in any position except park or neutral, engine running, the voltage at pin B dropped to .7 volts for about 10 seconds and then went up to 7.3 volts AC. Voltage at pin A remained at battery voltage (14.2 VDC). I could hear the solenoid actuating as the gear lever moved or the switch was toggled between turf and other positions.

Given that, it appears that the solenoid driver actually dithers or pulses the ground side of the solenoid to keep it actuated, and as a result, does not use full system DC voltage to keep in engaged once it has been actuated.

So I learned something today. Polaris has some interesting electronic control strategies. I have an old automotive scope and will get it out some day and see what the control signal from the ECU looks like and compare it to the resulting solenoid voltage.

Hope this helps somebody out there.

 

[Dseldoc]

Had a look at the solenoid driver circuit with an automotive scope this evening.

Here is what it looks like with ignition on and the gearshift in park or neutral.
Notice that the voltage is a straight line (at about 12 volts) with the solenoid disengaged. (measured on the ground side)

Here it is with the gearshift lever in reverse, low or high and the solenoid engaged.
Each line on the left is five volts, and the time is set at 5 milliseconds (.005 sec.)
You can see that the voltage runs from zero to about 12 volts. That's why you would see about 1/2 that with a digital volt meter.

I may have to do a bit more looking into each of the sensors and actuators "just for fun".

Tom

 

[Dseldoc]

Had a look at the solenoid driver circuit with an automotive scope this evening.

Here is what it looks like with ignition on and the gearshift in park or neutral.
Notice that the voltage is a straight line (at about 12 volts) with the solenoid disengaged. (measured on the ground side)
View attachment 21929

Here it is with the gearshift lever in reverse, low or high and the solenoid engaged.
Each line on the left is five volts, and the time is set at 5 milliseconds (.005 sec.)
You can see that the voltage runs from zero to about 12 volts. That's why you would see about 1/2 that with a digital volt meter.
View attachment 21937

I may have to do a bit more looking into each of the sensors and actuators "just for fun".

Tom

Let me make a correction... Top pic shows ground side of solenoid with switch off, regardless of gear lever position.
Bottom pic is with turf mode switched on, same wave form regardless of gearshift position. The solenoid does not disengage in park or neutral with turf mode turned on as previous post implies.
Sorry if this one messed anyone up a bit.

Learn something new everyday.

 

[shawn900]

I have the same code on a 2015 570 did you ever figure out what the problem was?