GL1500 Ran, Rode, Stopped and will not start again - Steve Saunders Goldwing Forums

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post #1 of 33 (permalink) Old 06-01-2019, 06:48 PM Thread Starter
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Join Date: Jan 2012
Location: Brookline, New Hampshire, USA
Year: 1990
Make: Honda
Model: GL1500
Posts: 16
GL1500 Ran, Rode, Stopped and will not start again

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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post #2 of 33 (permalink) Old 06-01-2019, 08:42 PM
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post #3 of 33 (permalink) Old 06-01-2019, 10:01 PM
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You are probably going to have to replace or repair the ECM.
Attached Files
File Type: pdf 1500 ECU repair.pdf (218.1 KB, 31 views)

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post #4 of 33 (permalink) Old 06-01-2019, 11:16 PM
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Quote:
Originally Posted by DaveO430 View Post
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.
.
https://goldwingdocs.com/forum/viewtopic.php?t=9415
.
.
.

Mike

Worked on the "big rigs" for 45 years now just riding my Wing whenever I can. Gets cold in Wisconsin.
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post #5 of 33 (permalink) Old 06-02-2019, 01:28 AM
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Year: 1991
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Model: GL1500 Interstate (Cinnamon/beige)
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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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post #6 of 33 (permalink) Old 06-02-2019, 11:01 AM Thread Starter
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Join Date: Jan 2012
Location: Brookline, New Hampshire, USA
Year: 1990
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Model: GL1500
Posts: 16
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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post #7 of 33 (permalink) Old 06-02-2019, 11:02 AM Thread Starter
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Location: Brookline, New Hampshire, USA
Year: 1990
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Posts: 16
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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post #8 of 33 (permalink) Old 06-02-2019, 11:13 AM Thread Starter
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Join Date: Jan 2012
Location: Brookline, New Hampshire, USA
Year: 1990
Make: Honda
Model: GL1500
Posts: 16
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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post #9 of 33 (permalink) Old 06-02-2019, 11:39 AM
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Quote:
Originally Posted by Tomkaralex View Post
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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post #10 of 33 (permalink) Old 06-02-2019, 01:34 PM Thread Starter
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Join Date: Jan 2012
Location: Brookline, New Hampshire, USA
Year: 1990
Make: Honda
Model: GL1500
Posts: 16
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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