Impact switch / tip over switch (kills ignition)


Information and questions on GL1500 Goldwings (1988-2000)
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Earl43P
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93 GL1500 Interstate DD
99 Valkyrie IS

Impact switch / tip over switch (kills ignition)

Postby Earl43P » Mon Jun 22, 2015 12:23 pm



Pardon my ignorance, what do you call the switch that kills the engine in a tip over?

Made it hard to search, not knowing its nomenclature, hence this thread.
Mine is faulty, far too sensitive. (It is NOT the kickstand switch doing this, mine has to be almost fully down to kill ignition)

I've only been riding this 93 1500 Interstate since early April, logged about 6500 miles since (DD / Commuter).
I've hit a couple bad potholes near work and had it shut off. Cycle the key and it comes back to life.

This morning, I did a pretty dramatic SMSM (See Me? Swerve Manuever) to ward off a stop sign roller that looked like he was going to pull right on out in front of me. Thankfully, he didn't BUT the bike shut off (at 65 mph). I had the sense to wait until I passed him to cycle the key, knowing it also kills the headlamp and it was still dark. Didn't want him to think I was giving him the go ahead to pull out.

So, knowing that I'm about to log ~2000 miles in the next week (Going up through Michigan into Canada and back down through NY/PA/VA to NC), I need to know:

Where is it?
How many wires to it?

Knowing that, I can rig a jumper to get me back on the road if it fails during the trip.
I'll certainly replace it but there isn't enough time to get one since I leave early Wednesday morning. I do have time to "look at it" if it's something obvious. I don't want to take the Valkyrie on this trip unless I absolutely have to. It doesn't have XM radio, lol.

I have no service manual for this machine (note the irony in my signature tag line!), but I'm a pretty savvy mech/electrician.
Please throw me a rope!


When all else fails, RTFM!

99 Valkyrie Interstate
82 GL1100 nekkid-ish
93 GL1500 Next!

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WingAdmin
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Re: Impact switch / tip over switch (kills ignition)

Postby WingAdmin » Mon Jun 22, 2015 12:30 pm

What you're looking for is a "Bank Angle Sensor". When the fluid inside them leaks out, the result is exactly what you're experiencing. It is located behind the right side saddlebag, below the right rear of the seat, on the frame rail:

Bank Angle Sensor
Bank Angle Sensor


To bypass it, find the red/white wire that leads into the connector for the unit, and ground this wire - you can do so by jumpering it to the green wire also found in the same connector.

Earl43P
Posts: 50
Joined: Sat Nov 01, 2014 7:15 pm
Location: Elizabeth City, NC
Motorcycle: 82 GL1100, parked in Pa.
93 GL1500 Interstate DD
99 Valkyrie IS

Re: Impact switch / tip over switch (kills ignition)

Postby Earl43P » Mon Jun 22, 2015 12:45 pm

Great response, you met my every expectation :!:

Thank you.

I believe I will not bypass it before the trip, but I will make a jumper for just in case.

I should have also mentioned the slight drama which ensued (a car was ALMOST beside me in the hammer lane) when I cycled the key. Since I had no warning and was still feeding the throttle 65 mph's worth when it died, the exhaust went BANG when the key went back to On, even though I had closed the throttle. I think that driver needed a good wipe afterward, probably thought he blew a tire. Pretty loud!
When all else fails, RTFM!

99 Valkyrie Interstate
82 GL1100 nekkid-ish
93 GL1500 Next!

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NVSB4
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Re: Impact switch / tip over switch (kills ignition)

Postby NVSB4 » Mon Jun 22, 2015 12:52 pm

I think you are talking about the bank angle sensor that shuts the fuel pump off.
It should be on the right side.

Edit:
WingAdmin to the rescue again before I could finish typing.
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CMReynolds1
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Re: Impact switch / tip over switch (kills ignition)

Postby CMReynolds1 » Mon Jun 22, 2015 1:04 pm

What type of fluid is in it?
Ride Safe,
Taz


TF 116, RivRon 512, Can Tho, S. Vietnam, 8/66-/9/68, GM(G)2

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spiralout
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Re: Impact switch / tip over switch (kills ignition)

Postby spiralout » Mon Jun 22, 2015 1:22 pm

More info here and recall bulletin here

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NVSB4
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Re: Impact switch / tip over switch (kills ignition)

Postby NVSB4 » Mon Jun 22, 2015 1:51 pm

spiralout wrote:More info here and recall bulletin here


This brings up a question.
I'm the 3rd owner of my bike.
Is there any way to see if the recall work has been done?
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Re: Impact switch / tip over switch (kills ignition)

Postby WingAdmin » Mon Jun 22, 2015 1:55 pm

CMReynolds1 wrote:What type of fluid is in it?


I'm not sure - it's some kind of oil, used as a viscous damping solution, to prevent the pendulum inside from contacting the side of the container from vibration and bumps - the bike has to actually "lay down" for the pendulum to have enough time to move and contact the side of the container, which causes it to trigger. When the fluid goes away, the pendulum isn't sufficiently damped, and the result is that swerving or vibration can cause it to trigger.

For the original poster: I thought the original recall might have expired, but checking it out, it is an outstanding NTSB safety recall, so it does not expire - you can see it here. If your bike still has the original bank angle sensor and it has not had the recall done to it, Honda will replace it at no charge to you.

From the recall letter addressed to the NTSB from Honda:

The sensor uses a weighted pendulum damped by an oil-based liquid to detect banking angles. If the sensor's plastic case material is exposed to high temperature for a prolonged period of time it may become unacceptably porous and the damping fluid may permeate the case material. As the quantity of damping fluid decreases, less damping force will be exerted on the pendulum. Abrupt turns or riding over bumpy surfaces might allow a sensor, with below normal damping levels, to shut off the engine unexpectedly.

You can see if your bike has had the recall done by checking the frame for this "X" stamp:

Bank Angle Sensor Recall Mark
Bank Angle Sensor Recall Mark

Earl43P
Posts: 50
Joined: Sat Nov 01, 2014 7:15 pm
Location: Elizabeth City, NC
Motorcycle: 82 GL1100, parked in Pa.
93 GL1500 Interstate DD
99 Valkyrie IS

Re: Impact switch / tip over switch (kills ignition)

Postby Earl43P » Tue Jun 23, 2015 6:34 am

Wow, I might get it fixed for no $$, I like that idea.

My wallet thanks you too!
When all else fails, RTFM!

99 Valkyrie Interstate
82 GL1100 nekkid-ish
93 GL1500 Next!

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zamboni920
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Re: Impact switch / tip over switch (kills ignition)

Postby zamboni920 » Tue Jul 28, 2015 3:05 pm

This is how bank angle sensor replacement was marked on my '88 .
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