relay A & B


Information and questions on GL1500 Goldwings (1988-2000)
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Gordwing
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relay A & B

Postby Gordwing » Mon Apr 27, 2015 7:29 pm



Are they solenoids and why is there 2 ?



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ct1500
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Re: relay A & B

Postby ct1500 » Mon Apr 27, 2015 7:45 pm

They are technically relays and is why Honda labels them as such. There are two because one (B) gets locked out when using reverse.
This is what I do
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Gordwing
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Re: relay A & B

Postby Gordwing » Mon Apr 27, 2015 8:44 pm

what do you mean it gets locked out.

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virgilmobile
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Re: relay A & B

Postby virgilmobile » Mon Apr 27, 2015 9:10 pm

Locked out.
When operating the reverse,a slower starter motor is needed...they simply do not use one relay(solenoid).
They use a big resistor to limit the starter motor speed.
When cranking the engine,that resistor is bypassed by clicking that solenoid.
The first solenoid must work for both cranking and reverse.
Theres a bit more stuff involved but that's the basics.

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Re: relay A & B

Postby Gordwing » Tue Apr 28, 2015 6:18 am

Thanks again. You seem to know what you're talking about.Here's another question.I took both relays out and they tested good according to the manuals instructions.
I took the starter out and it tested good but the bike will not reverse. Everything clicks and the bike tries to reverse but it just inches. Even on the center stand the back wheel just turns backwards an inch at a time. I had this problem in the fall so the 1st thing I did was adjust the cables which weren't really out and I replaced the reverse switch at the lever and I tested the reverse switch in the block on the right side .Any other thoughts would be greatly appreciated.

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virgilmobile
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Re: relay A & B

Postby virgilmobile » Tue Apr 28, 2015 6:38 am

I'd have to review a schematic but my basic understanding is ...during reverse,one relay is energized to provide battery power,then there is a control circuit that selects a combination of resistors to determine the speed of the motor.
With what you describe,research the test for the resistors and how each one is operated.there should be info in a manual.

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Re: relay A & B

Postby dingdong » Tue Apr 28, 2015 7:57 am

Gordwing. One possibility is: The start/reverse switch has a double set of spring loaded contacts that get gummed up and sometimes don't make contact. They need to be cleaned. Here is a tutorial for cleaning. This is a common problem with the 1500.

http://www.goldwingfacts.com/1500startbutton.htm
Tom

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Gordwing
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Re: relay A & B

Postby Gordwing » Tue Apr 28, 2015 8:45 am

I've done the switch on the handlebar and cleaned it up and extended the spring and it works well. last year if I pressed it to hard it would not start until I pressed it very gently. Now its back to normal.
I checked the reverse resister behind the battery and it measured .6 ohms at each wire. the manual says it should be no more thean .12- .17. Others have said as long as its not over 2 ohms.
Its very difficult to get that thing out so I'm hoping its ok. Your thoughts on that reading ?
What about the battery ? At what point will it stop reversing the bike?

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virgilmobile
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Re: relay A & B

Postby virgilmobile » Tue Apr 28, 2015 9:07 am

The battery should not be a issue.My engine is running when I back up.Volts are above 12.8.
Unfortunately the storms have taken out our electric so I cannot get to the schematic.Id be inclined to look at the control circuit that selects what resistors are used in reverse.I believe there relay(small ones) controlled.Possibly electronic.I think the circuit first selects one resistor wiring to start the reverse as slow as possible then a sensor(speed or load) adds the other resistors to the system to increase the speed.
Look for a ground issue.Especially at the bonding block.Theres several green wires in the harness that are all bonded with a shorting cap.theres one on each side,on the main harness...just below the gas cap area.Hard to find too.Some are taped up and hidden really well.

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Re: relay A & B

Postby Uncle Fester » Tue Apr 28, 2015 10:15 am

You said "It just inches along in reverse." Right ? That is about right, reverse speed is some where near, or less than 1mph. That is very slow.
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Gordwing
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Re: relay A & B

Postby Gordwing » Tue Apr 28, 2015 12:06 pm

What I mean when I say inches,is that the bike will only move an inch at a time when I hold the start button and then stop until I hold the start button again and then eventually it won't move at all.
It's like something is stopping the flow of power. I've checked everything except what's under the trunk.
Thanks again for brain storming with me.I'll check the harness wires tonite.

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Re: relay A & B

Postby WingAdmin » Tue Apr 28, 2015 1:49 pm

That is a known failure mode of the reverse system. Diagnosing it involves pulling connectors off the reverse control system and running some tests. It is fairly complex and involved - the portion of the electronic troubleshooting service manual that covers this system and diagnosing it is 33 pages long.

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Re: relay A & B

Postby Gordwing » Tue Apr 28, 2015 8:32 pm

Well,I best get at it. Thanks for your input.




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