2000 GL1500SE intermittent no start


Information and questions on GL1500 Goldwings (1988-2000)
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Erdeniz Umman
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Location: Ankara Turkey
Motorcycle: 2000 GL1500SE

Re: 2000 GL1500SE intermittent no start

Post by Erdeniz Umman » Wed Apr 18, 2018 10:59 pm



Reverse control unit checks the oil pressure light input to understand if the engine is running or not. So the engine must be running while reversing.

For the starting problem, there is a bracket between the reverse lever switch and its drum, it sometimes needs adjustment.
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SG_Jay
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Location: Northern MN
Motorcycle: 1998 GL1500 Aspencade

Re: 2000 GL1500SE intermittent no start

Post by SG_Jay » Thu Apr 19, 2018 8:30 am

Well, as always, lots of good info here. Let us know how this turns out. Now if the damn snow would ever melt I could get my bike out and start enjoying it!!

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Stew
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Joined: Mon Oct 23, 2017 10:40 am
Location: Smokey Point, WA - USA
Motorcycle: 2000 GL1500 SE
2005 Honda CRF230F

Previous bikes:
2003 Honda Ruckus
1993 Honda Elite SR
1986 Honda CR125R
1979 Yamaha GT80

Re: 2000 GL1500SE intermittent no start

Post by Stew » Sat Apr 21, 2018 3:33 pm

I do believe I've found the culprit. It is the reverse switch near the oil dipstick. I pulled it out and checked continuity between the body and the tip and it was infinite no matter if the plunger was in or out, there should be continuity when the plunger is out (reverse not engaged.) I sprayed carb cleaner kinda inside the plunger and tapped it on the floor a bunch of times and its got some reading which further verified it's the problem. To further confirm I blipped the start button with the wire dangling free, nothing but that relay click, held the wire to the case and did it again, the starter cranked. FINALLY!


Winging it every chance I get 8-)

19,119 miles when I got it from dad Oct 15, 2017 --- 23,128 miles and counting as of July 30, 2018!

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Stew
Posts: 286
Joined: Mon Oct 23, 2017 10:40 am
Location: Smokey Point, WA - USA
Motorcycle: 2000 GL1500 SE
2005 Honda CRF230F

Previous bikes:
2003 Honda Ruckus
1993 Honda Elite SR
1986 Honda CR125R
1979 Yamaha GT80

Re: 2000 GL1500SE intermittent no start

Post by Stew » Sat Apr 21, 2018 6:04 pm

For Pete's sake... Pro tip: When testing the switch on the bench, you must test for continuity on the actual plunger not the switch body.




This switch does not get it's ground from the switch body but rather through whatever is contacting the plunger, what kind of nonsense it that? That means the ground is reliant on a good path through what is pressing the plunger and whatever pivot points and hinges inside to be good and varnish free.




To do the most I could to help I sprayed some carb cleaner on a Q-Tip and wiped of the thing inside although it did seem pretty clean.


Winging it every chance I get 8-)

19,119 miles when I got it from dad Oct 15, 2017 --- 23,128 miles and counting as of July 30, 2018!

DaveO430
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2004 Suzuki DR200

Re: 2000 GL1500SE intermittent no start

Post by DaveO430 » Sat Apr 21, 2018 7:10 pm

The reverse switch on the trans is what grounds starter relay B (D1) and also the reverse switch relay (D4) if it's not in neutral. The reverse lever switch powers the neutral light and the reverse relay switch when it is in the forward position. So if the neutral light doesn't come on it is either a bad bulb, which won't affect starting, reverse lever switch, blown start reverse fuse, blown diode in the diode pack (D6) or the neutral switch or wiring.

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Stew
Posts: 286
Joined: Mon Oct 23, 2017 10:40 am
Location: Smokey Point, WA - USA
Motorcycle: 2000 GL1500 SE
2005 Honda CRF230F

Previous bikes:
2003 Honda Ruckus
1993 Honda Elite SR
1986 Honda CR125R
1979 Yamaha GT80

Re: 2000 GL1500SE intermittent no start

Post by Stew » Sat Apr 21, 2018 8:10 pm

Yeah it's all starting to make sense... I think. My last post was more a comment on that switch not being grounded through the body of the switch, but rather through the plunger which is isolated from the body, maybe that's more common than I'm aware of.

I panicked a little when I went to get the new switch because I brought my multi-meter with me and tested the new switch at the parts counter using the body as ground and it looked like it wasn't working until I tried the plunger. By dumb luck once I realized I incorrectly tested my old switch and re-checked it, my initial incorrect test turned out to not matter because it still ended up being bad.

And again, the neutral light has always been on every time it hadn't started, I can reproduce exactly what it does by removing the wire to the switch by the dipstick... neutral light is on but it doesn't start. Put the wire back on the new good switch and it starts, which I think is agreeing with what you said.

I am the most confident I've been that this is finally fixed.
Winging it every chance I get 8-)

19,119 miles when I got it from dad Oct 15, 2017 --- 23,128 miles and counting as of July 30, 2018!

Techdude2000
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Location: Lexington, KY
Motorcycle: 2004 GL1800

Re: 2000 GL1500SE intermittent no start

Post by Techdude2000 » Sun Apr 22, 2018 1:41 pm

The 1800’s reverse switch on the block works exactly the same way. It grounds through a lever inside the engine and the engine block itself. It will read a short to ground or the block when the engine is not in reverse and open when reverse is engaged. It does this so the reverse control module can provide and control the ground signal needed for the B relay while you are backing up. If the new switch doesn’t permanently fix it, then my guess would be the cables need to be adjusted a little to make sure the internal lever is pressing against the switch completely when reverse is not engaged. This would involve tightening the neutral cable and loosening the reverse cable slightly.

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Stew
Posts: 286
Joined: Mon Oct 23, 2017 10:40 am
Location: Smokey Point, WA - USA
Motorcycle: 2000 GL1500 SE
2005 Honda CRF230F

Previous bikes:
2003 Honda Ruckus
1993 Honda Elite SR
1986 Honda CR125R
1979 Yamaha GT80

Re: 2000 GL1500SE intermittent no start

Post by Stew » Tue May 15, 2018 1:43 pm

Just got back from a quick errand ride and thought I'd update this thread. It has started without fail every single time since replacing that neutral switch, that was definitely the bad part. For reference, it is part number 35600-MM5-003. Thanks again for everyone's help diagnosing this!
Winging it every chance I get 8-)

19,119 miles when I got it from dad Oct 15, 2017 --- 23,128 miles and counting as of July 30, 2018!

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wingdings
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Re: 2000 GL1500SE intermittent no start

Post by wingdings » Tue May 15, 2018 2:51 pm

hi stew saw our post there !!- I was repairing my friends 1988 wing with the same problem as yours - sometimes it would start other times nothing !! please view this thread I posted last week after finally finding the source of all the trouble - a connector had pulled itself lose from the second starter solenoid view thread - viewtopic.php?f=6&t=42339 and also take a look at viewtopic.php?t=6637 if you want to bypass the starter solenoid to get the bike to start - run a insulated screwdriver across the plus and negative at the top of the solenoid




hope this may help fella :D :D :D :D :D :D



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