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Discussion Starter #1
Hello All,
First off I need to thank you for all of the written guidance I was able to find on this forum. It is truly amazing the community of Wing experts all assembled in one place.
Here's my story:
I had my 1990 GL 1500 garaged for the winter as alway on a battery maintainer, unfortunately, the battery died this winter. I gave it one last attempt at a charge and got the bike started, rode around the block to check things out and parked it in the Garage. That is the last time it started on it's own.

Purchased a brand new battery.
The bike turns over
Has Spark,
Noticed Fuel was not flowing through the filter
Replaced the fuel filter (as by this point I had most of the bike apart)
Rebuilt Petcock
Checked All fuses with a voltmeter
Tried to test all the sensors that would prevent me from starting
Validated with Honda the Bank angle recall was done on this bike
Jumped positive to the Black/BLue Fuel pump wire and the Pump is working filling my fuel filter
After this, I can start the bike, but I only run what is in the line, I do not keep power to the Fuel filter
I figured next would be the ECM. I ripped into that and jumped the BLKlWHT and BLK/BLU
Tried to start the bike and I had fuel filling the filter and again I could run the bike in this mode.
After reconnecting the yellow ECM plug back into the ECM, the same thing occurred where no power is going to the fuel pump.

Long story and my ask is could it still be the banking sensor? I have read that there is no relay involved but on the schematic, it looks like a relay may be involved, is there a way to test a relay?

Any suggestions on where to go next?
Disappointed as we all should be riding this time of year, and I am sitting with a pile of parts scattered in the garage. Any guidance is appreciated. I am proud of myself for being able to follow all of your great instructions thus far, once i resolve this, i hope i remember how to put it all back together :) Thank you
Tom
 

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:welc: to the finest Goldwing Forum on the Planet....



got you approved, so your post will show up now.

the server will update and allow you to post anywhere in the next 1-60 minutes...
so if you can't post immediately, just be patient, you will be able to soon.

Meanwhile, Please follow this link > https://www.goldwingfacts.com/forums/usercp.php
and update your Profile so we know what bike you have and your location will show up for us.

Thanks



that is a big story, I am going to move this to the Tech section, with a forward link.
 

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You are probably going to have to replace or repair the ECM.
 

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You are probably going to have to replace or repair the ECM.
There was an item that was used on all of the 88 and 89 GL1500 plus part of the year in 1990. Was 1990 a year when some had the fuel pump relay while others had the new ECU with the transistor? (no relay then)

Maybe if all else fails and no one chimes in with definite answers you should just look to see if your bike has one. Maybe call Honda and ask them. (like that will happen) Check this link.
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https://goldwingdocs.com/forum/viewtopic.php?t=9415
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The '90 does not have a relay to the fuel pump, OR the bank Angle Sensor so there isn't a relay to test if you're questioning either of those items. They can be checked independently from each other though, if you have concerns.


Check out the "1500 no start" tips guide by DBohrer for some great ideas.



The fuel pump will turn on when the start button is pushed with the ignition on, , , (there is no "prime" with just the key on) if the engine starts then the ECU/ECM gives the fuel pump power to keep the engine going.


You could try to bypass that fuel petcock to rule out that as a source of your problems before doing much more to the ECU/ECM. Petcock problems cost less to fix than an ECU/ECM.
 

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Discussion Starter #6
Thank you
I think I am good on the petcock, as I had rebuilt it and also when the fuel pump is hot-wired it allows gas to the carbs. I am thinking that my test on jumping the BLKlWHT and BLK/BLU on the yellow ECU plug confirms that the ECU is not sending a single to the Fuel pump. I will check the banking sensor and also checking out the referenced 1500 no start tips guide by Dbohrer to see if I missed anything. THank you
 

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Discussion Starter #7
Thank you Dave,
I will see if I can determine if this bike has the 88-89 relay or not.
I know I will get there.
Thanks for the tip
Tom
 

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Discussion Starter #8
Thank you, Dave, I have reviewed the doc and can always try to validate my skills on soldering.
How did you determine the emitter Junction was dead? Is there any way to do that while it is still connected to the board?
I will be checking the Banking sensor before doing surgery on the ECU, would the behavior I am exhibiting show if the Banking sensor was faulty?
Basically no power to the fuel pump? Banking Sensor sounds less intrusive.

Thank you I will reply with status once I have more data.
Tom
 

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Thank you, Dave, I have reviewed the doc and can always try to validate my skills on soldering.
How did you determine the emitter Junction was dead? Is there any way to do that while it is still connected to the board?
I will be checking the Banking sensor before doing surgery on the ECU, would the behavior I am exhibiting show if the Banking sensor was faulty?
Basically no power to the fuel pump? Banking Sensor sounds less intrusive.

Thank you I will reply with status once I have more data.
Tom
It is NOT the bank angle sensor. I didn't do this repair, a member in England did but if it is not getting power out of the blk/blu wire but runs if you put power to the fuel pump that's what's wrong with it.
 

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Discussion Starter #10
Dave,
(1988 – 1992)

1. Battery voltage. (Should have at least 12.5 – 12.7 volts at rest) This CHecks out fine

2. Cable connections. (Should be clean and tight) This Checks out fine

3. # 2 ignition/cruise “15-amp” fuse.

a. Power to the # 8 ignition/cruise relay.

b. Power to the starter/reverse switch.

c. Power to the kill switch.

Note: If the cruise “on” light illuminates, items in # 3 are good. Cruise Light comes on when the button is pushed

4. # 8 tail illumination “15-amp” fuse.

a. Power to the # 3 tail main relay.

1. Power to the reverse lever switch.

5. # 12 ignition/relay “5-amp” fuse. (Located in the relay box “1989 - 1992”)

a. Triggers the # 8 ignition/cruise relay.

b. Triggers the # 3 tail main relay.

Note: If the headlights illuminate, items in # 4 and # 5 are good. This Checks Out

6. 30-amp fuse.

a. Power to the ignition switch.

Note: If the headlights illuminate, items in # 6 are good. This CHecks out

I am going to look at the ECM transistor replacement next and see what happens.
Thank you
 

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Your results in post # 10 indicate you have power from the engine shut-off (kil) switch to the ignition coils and the ECM. No BAS issue.....!!

ECM....??????????
 

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Discussion Starter #12
I am going with the transistor replacement.
Hoping this one will do the trick.
Will report back once I am done and riding again :)
[ame]https://www.amazon.com/3-Pack-2SA1012-Silicon-Transistor-Package/dp/B076CST6J9/ref=sr_1_1?[/ame]
Thank you for all your guidance.
Tom
 

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...You could try to bypass that fuel petcock to rule out that as a source of your problems before doing much more to the ECU/ECM. Petcock problems cost less to fix than an ECU/ECM.

Sure sounds like the fuel petcock is the problem... I know you rebuilt it, but since you're getting fuel to that point, but not further, then it ain't working.


Try By-passing it... just takes 5-minutes to have your answer of whether or not that's the problem
 

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Discussion Starter #14
There is no fuel coming from the fuel pump unless I direct power it from 12volt + side of the battery, or jump the pins on the ECM yellow connector.
I am looking at the transistor.
Thank you will keep the post u
pdated
 

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...I will see if I can determine if this bike has the 88-89 relay or not...

My 1990 has a Fuel Pump Relay under the trunk (RIGHT side), and it is controlled by another relay under the seat... located just to the right of the big (30?) amp blade fuse on the cross bar

Also, and I'm not sure on this point, but I believe that the engine needs to be Running in order for the fuel pump to operate... It otherwise does not run with just the ignition turned On



^ Fuel Pump Relay, and location (from the Link someone earlier posted)


^ Item #10: Relay that controls the Fuel Pump Relay




EDIT: Corrected Side for Fuel Pump Relay
 

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Discussion Starter #16
Alex,
Thank you for that picture, Sounds like i have a few more places to dig into and a few more parts to remove from the Bike. I will remove the trunk to see if I match the picture above.
Thank you.
I was feeling confident that once I jumped the ECM BLK/BLU BLK/WHT to power the fuel pump we had determined the ECU or transistor was bad.
Thank you for your continued support. Very Much Appreciated.
 

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...I will remove the trunk to see if I match the picture above...

No need to remove trunk:
-The Fuel Pump Relay can be accessed by removing Right Saddle Bag.
-The other (#10) relay can be accessed by removing seat.


On a related note, I've heard comments to the effect that that Fuel Pump Relay (under trunk) tends to "Unplug"
 

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HMMM, , , I wasn't aware that the '90 had a fuel pump relay, ,just the 88-89 had the fuel pump relay under the trunk.


The parts list for the '90 shows relays as in Alex's post, but the parts list shows them as Starter relay, NOT a fuel pump relay. There is NO fuel pump relay listed in the parts list for the '90. It sure doesn't hurt to check the relay, , ,but I have my doubts that its for the fuel pump.
 

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HMMM, , , I wasn't aware that the '90 had a fuel pump relay, ,just the 88-89 had the fuel pump relay under the trunk.


The parts list for the '90 shows relays as in Alex's post, but the parts list shows them as Starter relay, NOT a fuel pump relay. There is NO fuel pump relay listed in the parts list for the '90. It sure doesn't hurt to check the relay, , ,but I have my doubts that its for the fuel pump.

Perhaps I'm mistaken about the Name for it:
-Parts List calls it: DIODE, REVERSE, 31710-MT8-003
-Ebay calls it: Fuel Pump Relay


Regardless, I'm not sure if it directly affects operation of the Fuel Pump or not. However, I can say that my 1990 will not start with it unplugged... this applies to either of the 2 "relays" that I earlier referred to. To put it differently, if you unplug the Relay (under the seat), then the Relay/Diode under the trunk won't work, and the bike won't start.
This Liability bothered me enough to physically re-locate the relay from under the seat to over to/next-to the battery... so that I could more easily check/replace it on the road, by only having to pop-off the side-cover.
 

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Honda updated the ECM in 1990.

The 1990 - 2000 ECM's power the fuel pump (not a relay).

If you check the Honda schematics you will see that the 1988 - 1989 ECM has four (4) connectors. The 1990 - 2000 has one (1) connector.

If you check the 1988 - 1989 Honda fiche list you will see it uses the four (4) connectors. The 1990 - 2000 uses the one (1) connector.

Reference the items # 22 and # 23.....under Fuel Tank.......!!

I would trust Honda more than ebay on this........!!!!
 
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