GL 1500 REVERSE PROBLEM


Information and questions on GL1500 Goldwings (1988-2000)
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basher
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GL 1500 REVERSE PROBLEM

Postby basher » Sun Jun 17, 2012 10:55 pm



had this problem before but it was different to now,before if i kept pressing the button it would keep reversing up a foot at a time.i managed to get this sorted but now its happening a bit different.

after selecting reverse the nuetral light goes out and the reverse light comes on,press the button and it starts to reverse,after a foot or two the light goes out then theres nothing on the button,if a put the reverse lever back down then engage again it does the same again.

its as if a switch is tripping out and the bike no longer knows its in reverse .

please help,cheers,Bash



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virgilmobile
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Re: GL 1500 REVERSE PROBLEM

Postby virgilmobile » Mon Jun 18, 2012 8:56 am

Well there is the reverse lever switch.Mine wouldn't make real good contact when the lever was down and my neutral light wouldn't come back on.It's right behind the lever.

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Re: GL 1500 REVERSE PROBLEM

Postby WingAdmin » Mon Jun 18, 2012 9:31 am

It could be the speed limiter kicking in. From the service manual:

When the speed limiter is activated during reverse running, followed by the electrical motor brake, (when the motor is overloaded more than three seconds), the reverse system is turned OFF and the reverse indicator goes out. To use reverse again, it is necessary to return the reverse lever to the OFF position and then return it to the ON position.

Inspect the following before troubleshooting the reverse system:
- Be sure the transmission gear is in neutral position.
- Be sure the reverse lever is in the ON position and reverse cable is properly adjusted.
- Be sure the side stand is up.
- Be sure the following fuses are good: fuse 5A - the left side of the battery reverse fuse 65A - under the seat.

Also from the service manual:

Reverse stops troubleshooting
Reverse stops troubleshooting


Reverse connector location
Reverse connector location


Reverse connector diagnostics
Reverse connector diagnostics


The reverse diagnostic procedure is a bit big to post here (it's over 30 pages long). This could at least give you a start of where to look.

basher
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Re: GL 1500 REVERSE PROBLEM

Postby basher » Mon Jun 18, 2012 11:10 am

wow thanks.
i did have the reverse working then out with my son one day the right rear wheel locked up(its a trike)at 60mph.
found out later it was a collapsed bearing in the diff but while i was sat at the side of the road after emptying my pants lol i tried the reverse thinking it might free of whatever was stuck.hasnt worked since so i think this is the overload you suggest.
thing is its now very easy to push around forward and back so i dont think the trike part is overloading.
thanks,Bash

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virgilmobile
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Re: GL 1500 REVERSE PROBLEM

Postby virgilmobile » Mon Jun 18, 2012 2:00 pm

Just as a point of interest.When cranking,both relays energize.One from the battery and the other to ground.So saya the schematic.
When reverse is used,only the one from the battery is energized.The ground path is through a resistor block to slow the motor.As moor speed is called for,another resistor is tied into the circuit by the power control module.

basher
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Re: GL 1500 REVERSE PROBLEM

Postby basher » Mon Jun 18, 2012 3:01 pm

love them diagrams but lets pretend i'm really thick,
which black box do i check first lol.
cheers,Bash

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virgilmobile
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Re: GL 1500 REVERSE PROBLEM

Postby virgilmobile » Mon Jun 18, 2012 3:37 pm

Just looking at the schematic,it's the one with just 3 wires on it. :)

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Re: GL 1500 REVERSE PROBLEM

Postby basher » Wed Jun 20, 2012 11:41 am

right a bit of an update,
have done all the checks on the reverse control unit best i can and all seems well,
next i have been checking the black box next to the 65amp fuse under the seat and power seems to be there all the time when the reverse button is pressed so it must be elsewhere where it is tripping out.
any more ideas please.
cheers,Bash

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Re: GL 1500 REVERSE PROBLEM

Postby virgilmobile » Wed Jun 20, 2012 3:22 pm

I'll try to help....
First determine which is cutting out.
either the motor is loosing 12 volts or the ground path.
locate the 2 wires that go to the starter.They attach one to each solenoid.
The solenoids are, 1 for the hot side and the other for the ground side.

When the reverse is working,one wire will have full battery volts on it.
The other wire will have some voltage(I've never measured it) but obviously much lower.
When it quits,see if all the volts go away or if both wires to the starter have the same volts.

This will tell me which circuit to look at.

basher
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Re: GL 1500 REVERSE PROBLEM

Postby basher » Thu Jun 21, 2012 10:16 am

thankyou for trying to help,it is much appreciated.
right went to the bike today and yep,flat battery.
got that sorted and did the tests you told me to do,
when the reverse light goes out both the large wires go dead.
hoping this means more to you than it does to me.
cheers,Bash

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Re: GL 1500 REVERSE PROBLEM

Postby virgilmobile » Thu Jun 21, 2012 10:25 am

Thanks for the test.it confirms that it's loosing power, not the speed control.I'll dig into the circuit for step 2

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Re: GL 1500 REVERSE PROBLEM

Postby virgilmobile » Thu Jun 21, 2012 1:09 pm

Please look at the volts on these terminals when you operate the reverse.It's the starter relay regulator for reverse.The voltages control the main solenoid.

Green=ground,no volts
light blue=control volts from module
white blue=12 volts continuous during reverse(should not cut off)
brown/red=output to main solenoid.

Let me know what they have on them when it works and when it quits.

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Re: GL 1500 REVERSE PROBLEM

Postby basher » Thu Jun 21, 2012 2:03 pm

ok job done and the results are:-
light blue starts at 1.8 volts,when i press the button goes down to zero then back to 1.8 when it cuts out.
white/blue stays at 13.9v throughout.
brown/red stays at 13.5v throughout so these last 2 when the reverse cuts out they still read the same volts.
hope this makes sense.
cheers,Bash

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Re: GL 1500 REVERSE PROBLEM

Postby basher » Thu Jun 21, 2012 2:07 pm

der,just a minute i thought and went and checked the green which is 0.29,press the reverse button and ot read 0.35v then back to 0.29v when it cuts out.

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Re: GL 1500 REVERSE PROBLEM

Postby virgilmobile » Thu Jun 21, 2012 2:43 pm

Got it...I'll continue to plug in the info and see what I can come up with.

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Re: GL 1500 REVERSE PROBLEM

Postby virgilmobile » Thu Jun 21, 2012 3:16 pm

Next test please.Can you verify that the yellow/red wire on the main solenoid goes from near zero to near 12 volts when it quits in reverse?
I'm trying to narrow it down a bit to one of four circuits
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basher
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Re: GL 1500 REVERSE PROBLEM

Postby basher » Thu Jun 21, 2012 3:32 pm

went from zero to 13.5v as soon as i pressed the reverse button and stayed at 13.5 when it quit.
thanks again for taking the time to help me out.
cheers,Bash

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virgilmobile
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Re: GL 1500 REVERSE PROBLEM

Postby virgilmobile » Thu Jun 21, 2012 4:18 pm

So it went to zero while it was going in reverse and then to 13 volt as it quit?

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Re: GL 1500 REVERSE PROBLEM

Postby virgilmobile » Thu Jun 21, 2012 4:21 pm

I'm also gonna set mine up tonight to run some tests.

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Re: GL 1500 REVERSE PROBLEM

Postby virgilmobile » Thu Jun 21, 2012 5:56 pm

I did a quick test on mine.I used a analog volt meter.I put it to read 12 volts.positive lead on the yellow/red and negative lead on the brown/red.when I push the button for reverse the meter swings to 10 volts to energize the solenoid and then drops to 3.8 volts and holds the solenoid.See if yours dosen't drop to zero. This would mean the hold circuit failed.I think your getting the first kick and then killing the brown wire. It's the ground path for the solenoid.the yellow/red also stays hot during the test.

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Re: GL 1500 REVERSE PROBLEM

Postby virgilmobile » Thu Jun 21, 2012 9:14 pm

Ok mate,here goes.As best as I can determine from here,I suspect the 5 amp fuse is blown or the starter relay regulator is shot.
I'll bet a dollar that if you unplugged it, the reverse would act the same way.It's purpose is to keep the main solenoid energized only.It does not first make it click to get going,it just holds it there.
Now there is that 5 amp fuse in the circuit that should be checked first and obviously I can't guarantee the results but this is where I'd start.Some of the info is from the 1998 gl1500 service info found in the manual section,other info comes from the 89 euro pdf.Both bikes use the same circuits.Here's a pix too.

basher
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Re: GL 1500 REVERSE PROBLEM

Postby basher » Fri Jun 22, 2012 8:01 am

ok,sorry for the delay,sleep and work.
right did the test and as you thought it went back to 0v so tried unplugging the regulater
and pressing the button and it did a second and then stopped,only difference is it didnt cut it out so i could press the button again and it does another second and stops and again and again same thing.
are we getting somewhere here mate,i'm guessing regulater shot but i will leave any judgement to you.
i would still be flattening the battery and scratching my head lol.
cheers,Bash
just a thought but this is the problem i had last time and i was testing the regulater when it just started working so wether i had moved something i dont know.

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Re: GL 1500 REVERSE PROBLEM

Postby virgilmobile » Fri Jun 22, 2012 10:23 am

As far as I can tell....
at the moment the light blue wire goes to zero,the voltage on the yellow/red--brown/red solenoid wire should have the hold voltage of near 4 volts.

When the light blue goes back to 1.8 volts,the solenoid should cut off.
If this is correct,the regulator is working.
If the voltage on the solenoid only goes to 10 volts and drops to zero,the regulator has failed.It isn't providing the "hold"current.

I'm gonna try to simulate the same problem on my bike this afternoon and see if I can come up with a way to test the thing.

Be patient,this is tough to pinpoint the problem to a single part from half a world away.

basher
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Re: GL 1500 REVERSE PROBLEM

Postby basher » Tue Jun 26, 2012 3:50 pm

we have an update,just breaking each contact,cleaning and putting back together and checking after each one i got it down to two wires next to the battery on the right,blue and white i think in like a rubber bulb,took it apart,cleaned,put it back together and backwards she went,job done.
so been out and about on it today,indicators have stopped working but other than that all is good.yes horn still works.
many many thanks to virgilmobile,people like you make all the difference on these forums.
thanks again,Bash

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Re: GL 1500 REVERSE PROBLEM

Postby Mariocupet » Wed Jun 27, 2012 11:23 am

I trust you used dielectric grease on the electrical connections. It will waterproof the connection and keep from oxidizing. I always use it when I take an electrical connection apart even if I had put it on before.




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