HarleyTechTalk

Technical Forums => General => Topic started by: 86fxwg on September 10, 2019, 06:42:08 PM

Title: Why does a key light come on?
Post by: 86fxwg on September 10, 2019, 06:42:08 PM
In Maggie valley NC on Vacation on my 2010 Flhx coasting down a 9% grade & the key light came on ? Bike Does NOT have security! Came on again @ 30 mph for 30 seconds after an hour cool down @ the local watering hole! Light has NEVER been on before @ least I've never seen it in 25000 miles!

86
Title: Re: Why does a key light come on?
Post by: CndUltra88 on September 10, 2019, 06:50:19 PM
Quote from: 86fxwg on September 10, 2019, 06:42:08 PM
In Maggie valley NC on Vacation on my 2010 Flhx coasting down a 9% grade & the key light came on ? Bike Does NOT have security! Came on again @ 30 mph for 30 seconds after an hour cool down @ the local watering hole! Light has NEVER been on before @ least I've never seen it in 25000 miles!

86

Do they have a TSSM ?
Turn signal security, blah blah blah....
You might need to replace the battery in the keyfob .
Rob
Title: Re: Why does a key light come on?
Post by: fleetmechanic on September 10, 2019, 07:13:45 PM
No Security=No Keyfob
Title: Re: Why does a key light come on?
Post by: CndUltra88 on September 10, 2019, 07:30:53 PM
Quote from: fleetmechanic on September 10, 2019, 07:13:45 PM
No Security=No Keyfob

Doh !
Title: Re: Why does a key light come on?
Post by: Karl H. on September 10, 2019, 11:18:40 PM
The key icon indicates the presence of a diagnostic trouble code.

Karl
Title: Re: Why does a key light come on?
Post by: Breeze on September 11, 2019, 03:56:47 AM
The key indicates a problem with a light bulb or some thing else in the turn signal circuit.
Title: Re: Why does a key light come on?
Post by: 86fxwg on September 11, 2019, 04:52:02 AM
Quote from: Breeze on September 11, 2019, 03:56:47 AM
The key indicates a problem with a light bulb or some thing else in the turn signal circuit.
This I can handle on the road! Thanks!

85
Title: Re: Why does a key light come on?
Post by: 14GuineaPig on September 11, 2019, 05:14:50 AM
I think it has something to do with the fact that you were "Coasting".  This causes an error because the speed of the bike & the engine speed are out of sync.

I found this in the 2011 Touring Elec Diag Manual.  Check your bike for trouble codes and see if this applies.

DTC B1154, B1155 5.20
DESCRIPTION AND OPERATION
The TSM/TSSM/HFSM monitors the clutch and neutral switch
circuits to determine whether or not to let the vehicle start. If
the TSM/TSSM/HFSM does not see that the clutch switch is
closed (lever pulled in) or the neutral switch is closed (transmission
in neutral) it will not activate the start relay. The
TSM/TSSM/HFSM controls the start relay by supplying the
ground circuit to the coil of the start relay.
sm05247
Figure 5-39. Neutral Switch [131]
Diagnostic Tips
DTCs B1154 and B1155 will set when either the clutch switch
circuit or neutral switch circuit is shorted to ground at speeds
greater than 10 mph (16 km/h) for more than 60 seconds. Refer
to Table 5-49.
Table 5-49. Code Description
DTC DESCRIPTION
B1154 Clutch switch short-to-ground
B1155 Neutral switch short-to-ground
Connector Information
For additional information about the connectors in the following
diagram(s) and diagnostic procedure(s), including the color of
the harness test kit terminal probes, see B.1 CONNECTORS.
Title: Re: Why does a key light come on?
Post by: tomcat64 on September 11, 2019, 06:06:59 AM
Use you trip meter button and see what if any codes are stored.
Title: Re: Why does a key light come on?
Post by: Coyote on September 11, 2019, 06:35:43 AM
It means you have a diagnostic code set.

If you were coasting for some time with the clutch pulled in, it will create a code as the bike thinks the clutch switch has failed.

Could also be something else. You should pull the codes and see.
Title: Re: Why does a key light come on?
Post by: 86fxwg on September 11, 2019, 08:16:24 AM
Quote from: Coyote on September 11, 2019, 06:35:43 AM
It means you have a diagnostic code set.

If you were coasting for some time with the clutch pulled in, it will create a code as the bike thinks the clutch switch has failed.

Could also be something else. You should pull the codes and see.
Quote from: tomcat64 on September 11, 2019, 06:06:59 AM
Use you trip meter button and see what if any codes are stored.
Refresh my memory on how to get tcm codes please?
I was coasting for probably 3 miles with clutch pulled just to see how fast I could coast between curves. Then it came on just cruising the curves.

86
Title: Re: Why does a key light come on?
Post by: Coyote on September 11, 2019, 08:35:46 AM
https://harleytechtalk.com/htt/index.php?topic=53211.0