Can the Cruise Set/Resume switch be ordered as a separate part? I am having problems on my 08 where the cruise drops off. The light stays green, so I am thinking the ECU is in decel mode. Eventually I will get an error code P0577.

 

P0057 is "Cruise Control Inoperative." There is a diagnostic protocol for your problem in the 2008 HD Electrical Diagnostic Manual, page 4-143. Stop by your local HD store Service Dept. and ask to take a look at their copy. It may very well be the set/resume switch. Yes, HD sells the switch, though I don't have a p/n for it.

Carl

 

p/n from 2007 part book is 77101-98. It looks like all years are the same.

 

It looks like this part has been superseded by part number 71788-08 for the '08 models. Sorry for the wrong numbers in my first post.

 

just got my bike back from the shop for the same reason, the dealer first replaced the ECM with updated version i have one of the earlier 08's, [ still under warranty ] mechanic took it for test ride cruise control still was not working right, next they replaced speed sensor now it is fine. if bike is still under warranty let dealer repair it

 

I had to take mine in yesterday for the cruise shutting off. Picking it up a few minutes here. Shop said they just needed to make an adjustment or something.

 

Unfortnately I am out of warranty. So...... It will be me myself and I doing the troubleshooting. I am afraid this is going to turn out to be an ECM issue on mine. Here is what I know and where I am going with my troubleshooting.

1. When I am having trouble, I believe the ECM has the cruise still active but is in Decel as though I am holding the switch to SET/COAST. The Cruise light stays "Green"

2. If I hit brakes, pull clutch or roll throttle fwd. The Cruise light goes "Red."

3. I can also get the light to change to "Red" by pushing the switch left.
(According to the Electrical Manual, the cruise will disengage if both the SET/COAST and the RESUME/ACCELERATE switches are press at the same time.) ****That would be kind of hard to do**** But, in my mind explains why pushing the switch to the RESUME gets the cruise to disengage.

4. I ran through the CRUISE INOPERATIVE DIAGNOSTICS. Everything checks out on that. Light goes Green/Red as required for all functions.

5. According to the manual the SET/RESUME switch should show continuity through the O/W wire tied to the Right Turn switch and the Stop Lamp switch on pin 1 of the connector from the right hand switch housing. I found that to not be the case the continuity is through the Run/Stop switch.

5. I removed the ECM and Ohmed out pins 22 and 34. Each shows continuity to Pin 72 as expected when the Set/Resume switch is operated.

At this point, I don't see it being the Set/Resume switch. I have zip tied my Fluke meter to the Zumo mount and tapped the SET/COAST wire and garage tested that I get 12V when I push the switch to set.
And falls back to 2 volts when I let go. (Not sure whether the 2 volts means anything or not)

Now it's raining!!!! no road test.

 

I had a similar problem on my 08 ulta after installing grips. I ended up reinstalling the throttle grip twice and this cleared it. Might not be that easy but it worked for me when the cruise started cutting out. I think I was getting the same code but can't be sure.

 

I just looked in my 2009 Touring Model Parts Catalog on page 87. The part number for the Switch Assembly, cruise control, set/resume is still 77101-98. 71788-08 is not even in the 2009 Part Catalog.

 

I found the 71788-08 number when I did a search for the price on the 77101-98. The price was wide ranging from $31 to $76!!