Got Limp & Codes U0073, U0122, U0100, C0060, P0556, P0504, U0101, U0128, U0295, U0303

[amusher]

Got Limp & Codes U0073, U0122, U0100, C0060, P0556, P0504, U0101, U0128, U0295, U0303

2016 RTL - Started out this morning and bike went into Limp mode and wouldn't even shift. Removing key a few times and got it in 1st then 2nd and was able to get home. Pulled Codes: U0073, U0122, U0100, C0060, P0556, P0504, U0101, U0128, U0295, U0303.
Checked Battery voltage, good. Checked Fuse 5, good. When we got home with it, it was stuck in 2nd and wouldn't shift down plus started lugging the engine down like I was holding the brake.
Suggestions? If I have to take it to our one and only shop, I might as well figure my riding season is over!!

 

[BertRemington]

The fault codes you listed point to CANBUS and VCM related issues. So what happened with your Spyder from the last time you rode it until this morning for how many miles until Limp Mode? Perhaps you washed it? Also battery voltage is "good" does not appear on my model of DVOM. What model of DVOM do you have that shows "good" as a voltage measurement?

Would you please measure & tell us the battery voltage as vv.v at rest with Key-Off, Key-On Engine-Off, Key-On Engine-Starting, and Key-On Engine-Running?

 

[amusher]

Battery voltage checked with voltmeter, key off 12v, key on 12v and running 13.5v The only issue I had from the last ride was a pretty severe shaking on our washboard road. It's just sat since then until this morning. Limp came on about 4 miles up the road.

 

[BertRemington]

Had to step away apologies for delay. My 2014 service manual says

P0556
ECM
Brake Pressure on CAN not valid. If no valid brake pressure on CAN is available from VCM, a system check can not be realized. Therefore the condition for a non plausible brake signal is set after a certain time.

This points to the electrical brake circuit. When you are riding, the VCM is comparing the brake line pressure against brake switch position. If the brake switch is On, the VCM expects to see a brake pressure increase (full pressure is about 3000psi). If it doesn't then the VCM assumes a hydraulic brake circuit fault which is a risk to vehicle safety and it instructs the ECM to respond with Limp Mode. I also suspect if the brake pressure increases without the brake switch On signal the VCM will also present a fault.

I suggest you check your brake wiring and brake pedal operation. Make sure the brake light is turning Off (Federal regulations require it to operate even with Ignition Off) and the pedal operates freely.

Yeah washboards are a threat to vehicles of all sorts. If the bumps don't get you the harmonics will.

Best wishes.

 

[amusher]

Thanks. I have checked brake pedal, lights, switch. All seem fine. Looking for VCM unit and any possible connections that came loose.

 

[BertRemington]

Of course it wasn't going to be easy. Notice the P0556 code was the ECM not hearing from the VCM. Also notice the brake electrical circuit goes to the ECM while the hydraulic circuit goes to VCM. There's no information crossover except via CANBUS. And notice all those Uxxxx codes? They're CANBUS complaints.

The CANBUS circuits (there's several) are two White wires with various color stripes twisted together at about 8 turns per foot.

The big ECM VCM radio et al connectors are pretty robust. The LHS connector not so much. I'd start there.

There are eleven participants on the CANBUS. There is a system check at ignition On and every minute or so. I don't know what that means for transient and permanent codes. Perhaps you can clear the codes then power cycle without starting the engine and see what codes are presented. The system check might localize the disconnected participant.

 

[amusher]

Well, I don't know much else I can check on my own. I found the VCM with the wiring bundle going into it but can't tell anything else. Guess it's a trip to the shop.
Thanks for your help.

 

[amusher]

Does anyone know where the ECM is located??? (I know you do!!)

 

[Jetfixer]

The common point for CANBUS issues is the cluster. Check the connectors on the cluster. ECM is located on the left side below the mirror.

 

[amusher]

If the bike goes into a severe shake on a washboard road, is there anything in the ECM or VCM that could be shook loose?? The connectors look and feel tight. All my codes say communication is open between several things. I can't read the wiring schematic I have in the manual to even try and trace some things. Can't get it in the shop until the first of next month!!

 

[BajaRon]

Miles on a washboard road can certainly shake things loose. I'd start with the fuse/relay box to make sure all is well there.

Make sure your battery terminals are clean and tight. Then look to what the ECM says it can't communicate with.

 

[amusher]

Several things.....Brake pressure, signal, TCM, mostly CAN IDs???

 

[amusher]

If I let it sit awhile then start it, it takes a minute for the Limp Mode to come on. Seems like its waiting for a relay to kick in before it doesn't read what ever it needs to...??

 

[Jetfixer]

What year, what codes, etc. Can't help without more info.

 

[amusher]

Sorry, started a new thread instead of adding to the original thread...

Mod Edit: Merged threads.

 

[amusher]

Thank you Mod...

 

[BertRemington]

If I let it sit awhile then start it, it takes a minute for the Limp Mode to come on.

I assume you are letting it idle rather than engaging it in gear and then moving forward.

If so this points to a module has lost connection to the CANBUS. Most of your U codes aren't in my 2014 service manual but the few that are point to the TCM. But I doubt it will be that simple.

I can't read the wiring schematic I have in the manual to even try and trace some things.

An electronic version of the service manual is available from several sources at modest cost.

 

[Snowbelt Spyder]

If I let it sit awhile then start it, it takes a minute for the Limp Mode to come on. Seems like its waiting for a relay to kick in before it doesn't read what ever it needs to...??

Your U0073 code pretty much indicates a total and general CANBUS failure, while your other U codes are indicating the loss of comms to the various other modules. Pretty much all of them. Which should be expected, right? I would question the validity of any P code, and not worry about chasing after those, until you know that the CANBUS is communicating again. The reason I came back to this thread was to tell you the exact same thing that I see that Ron already told you in Post #11. If you haven't done so, go back into both of your fuse boxes and re-seat (remove and re-install) all of the relays. Those are the little square, black boxes in there. Fuses, also. Vibration can cause a fuse to fail without looking blown. Check them. Check for corrosion on the pins. And give your battery terminals a complete removal, cleaning and replacement. Corrosion gets between the terminal and the battery post over time, drops system voltage going out the terminals and can wreak havoc with the CANBUS. Your meter doesn't see that because you stick it right onto the posts. All of that kind of stuff can be aggravated by vibration.

As you already can see, the plugs on those modules - ECM, VCM, etc - have locking devices on them. If the locking device was properly set, you probably didn't knock one of those loose.

 

[amusher]

As Bert said, it seems to be pointing to the TCM. I can start it, let it idle, shift it to 1st, N, R and back for a couple of minutes, then the VSS light and eng. light come on and it won't shift again until I let it sit off, then restart in a few minutes. I'll run back thru the fuses and relays. Thanks.

 

[Snowbelt Spyder]

As Bert said, it seems to be pointing to the TCM. I can start it, let it idle, shift it to 1st, N, R and back for a couple of minutes, then the VSS light and eng. light come on and it won't shift again until I let it sit off, then restart in a few minutes. I'll run back thru the fuses and relays. Thanks.

Actually, when I look up the codes in BUDS that he doesn’t have in his manual, it is pointing to many modules, not just the TCM. that’s why I think that the U0073 code is the key. Appears that the entire CANBUS fails for some reason. So, good luck with it.