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I got a 2001 929 a few weeks back with 50,000 miles. Seems to have been well cared for - it's a blast to ride! After 2 weeks of normal operation, about 2 weeks ago, I went out to the garage and when I turned on the ignition - no headlights or dash backlights. Just the neutral light and the oil light. She cranks over fine, but won't start. I checked all the fuses and the battery terminals - all fine. After i get done fiddling, she starts up fine - which makes me nervous.

Turned into an intermittent problem, where sometimes I would turn the key and everything was good, sometimes I'd have to cycle the key on and off a few times before I would get lights and start. It started to get worse where she stalled while idling and i had to cycle the ignition a few times to get her started. One hiccup at highway speed, which was startling, but she continued on fine.

I read all the threads i could find and ordered a replacement bank angle sensor and engine stop relay in the meantime i checked the pink wire business - the diode is reducing the voltage down to around 9v. Just to be sure, I bypassed the ignition switch with a 1k resistor, no luck.

I tried jumping the bank angle sensor, engine stop relay, and fuel cut off relays with no luck. I started following the system diagram on page 5-6 of the manual, power is getting to both the main fuses A & B.

Here's where it gets weird, I disconnected the Engine stop relay and tested the wires going to the unit. With the ignition off, I have 12.38 volts on the red/white wire, nothing on the rest. With the ignition on, I have 12.38 at the red/white, 12.28 on the Black/Grey and 11.78 on the Red/Orange, still nothing on the Black/White. Again, this is just testing the wires coming to the relay - with no relay attached.

Any thoughts on this?
 

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I got a 2001 929 a few weeks back with 50,000 miles. Seems to have been well cared for - it's a blast to ride! After 2 weeks of normal operation, about 2 weeks ago, I went out to the garage and when I turned on the ignition - no headlights or dash backlights. Just the neutral light and the oil light. She cranks over fine, but won't start. I checked all the fuses and the battery terminals - all fine. After i get done fiddling, she starts up fine - which makes me nervous.

Turned into an intermittent problem, where sometimes I would turn the key and everything was good, sometimes I'd have to cycle the key on and off a few times before I would get lights and start. It started to get worse where she stalled while idling and i had to cycle the ignition a few times to get her started. One hiccup at highway speed, which was startling, but she continued on fine.

I read all the threads i could find and ordered a replacement bank angle sensor and engine stop relay in the meantime i checked the pink wire business - the diode is reducing the voltage down to around 9v. Just to be sure, I bypassed the ignition switch with a 1k resistor, no luck.

I tried jumping the bank angle sensor, engine stop relay, and fuel cut off relays with no luck. I started following the system diagram on page 5-6 of the manual, power is getting to both the main fuses A & B.

Here's where it gets weird, I disconnected the Engine stop relay and tested the wires going to the unit. With the ignition off, I have 12.38 volts on the red/white wire, nothing on the rest. With the ignition on, I have 12.38 at the red/white, 12.28 on the Black/Grey and 11.78 on the Red/Orange, still nothing on the Black/White. Again, this is just testing the wires coming to the relay - with no relay attached.

Any thoughts on this?

If cycling the ignition key helps then maybe pull the base off and see if the wiring is still attached,
Might be worth checking the earth junction block inside the harness, they are known to corrode or just come apart.
 

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Thanks Blade. I tried completely bypassing the ignition switch, using a diode to reduce the voltage to the pink wire - with no change - so I don't think that's it. I am just getting ready to pull the tank and airbox to check out this godforsaken ground block in the harness I have been reading about. The rear ground, under the bank angle sensor, looks to be fine.
 

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Discussion Starter #4
Blade - Anyone we could get to weigh in on the voltage readings coming into the Engine Stop Relay? Thanks so much.
 

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Discussion Starter #5
IMG_1352[1].JPG

Holy Christ - this certainly doesn't look good. Looks like I'll be soldering the same colored wires together - hopefully this will solve my problem
 

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Those are grounds. If I remember correctly the blk/wht are computer controlled and the green are chassis ground. That is just a junction Honda used to put lots of wire together. Probably got corroded causing the connection to arch and overheat. You could eliminate it and solder all the blk/wht wires together and all the green wires together. Use heat shrink over your connection.
 

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Sure enough - I bundled up all the black/white and soldered them together, did the same with all the green. She's purring like a kitten!
 

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Discussion Starter #9
My reward for staying up way too late working in the garage last night? Not a cloud in the sky this morning - gonna be extra sweet twisting that throttle today!
 
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