GPS - travel direction bouncing 180 degrees out - GL1800Riders
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post #1 of 2 (permalink) Old 09-21-2016, 12:48 PM Thread Starter
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Location: Colorado
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GPS - travel direction bouncing 180 degrees out

OK, A couple of weeks ago, I did a 125 mile run for a customer visit and everything worked fine. I come out for the nice ride home and the GPS cannot tell which direction I am going. It just turns 180 degrees one way then almost immediately turns the other way 180 degrees.

My position is correct, the roads are correct, just the direction is off/on - by always 180 degrees.

(side note: The "R" light also started blinking indicating my reverse relay is bad - probably not related, but it happened at the same time.)

Any ideas? (yes, I do have the original NAV system SD in a safe place.)

Thanks
...gene

2012 GL1800 NAVI

GWRRA 367875
Darkside #1511 - Bridgestone DriveGuard 195/55RW16 RFT
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post #2 of 2 (permalink) Old 04-09-2017, 07:37 PM Thread Starter
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OK fixed - stupid honda engineers (or more likely US regs)

Here's the deal.

If you lose something in the reverse circuit, the bike can't tell if you are going forward or backward. This results in the following being unusable:
  • Reverse - this was my initial problem. Big Flashing 'R'.
  • The GPS - as it cycles between reverse and forward (180 degrees), even at speed.
  • Cruse - as it's not usable in reverse and the bike can't which way its going, no cruse, again even at speed.

This is either stupid engineering or stupid government regulation - either way it's stupid.

So I did trace this down. Swapping out parts, testing continuity, taking off the left saddlebag (tedious but not hard - but have a shop manual), and finally testing power to the reverse solenoid.

Well - once I got to that last step, reverse started working again. I noted a great deal of dirt in the plastic shroud around the solenoid activation connections - I mean alot - that "cup" was practically full. I emptied it out, pulled the solenoids off the mounts, checked the connections, and in testing reverse started working.

SOoo ATM, I am claiming dirt resulted in a bad connection for the reverse solenoid. I cleaned everything up with contact cleaner and the bodies around with brake cleaner. Put a dab of dielectric grease in each contact and put the bike back together.

Went for a test ride and everything was working fine. Reverse, Cruse, and GPS - all fine. If I have a re-occurrence, I will replace the solenoid.

Just plain stupid...

...gene
buster52 and dave ritsema like this.

2012 GL1800 NAVI

GWRRA 367875
Darkside #1511 - Bridgestone DriveGuard 195/55RW16 RFT
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