Triumph electrical gremlins - possible ECM relay issue?

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

So. A week ago I got back from a 10 day holiday touring through Wales, the midlands, the peak district etc. Went over the Cat and Fiddle pass etc. Was great. Bike ran like an absolute dream. Since getting back from Holiday I did not ride the bike for about a week.

We come to Yesterday. I rode it about 15 miles over to my Parents house, and it worked fine. I rode it about 4 miles over to where my martial arts class is, it worked fine. When I got out of the class? Hmm. I put the key in the ignition, and there is no response. No lights, no whir of the fuel pump, no dash activity. Weirdly though, the indicators and horn work, and I discovered this morning that the brake light also works. I stuck a meter across the battery, 15.5v. After wheeling the bike under a street light last night, I checked the fuses (which seemed OK) and I reseated all the relays too. So in the end I locked the bike up and cadged a lift home from my GF who was pretty grumpy to have to drive a 20 mile ish round trip. I returned today to collect the bike using my beautiful Passat estate and trailer combo.

So The status right now is as follows:

Bike still strapped to the trailer waiting for the rain to stop (trailer ramp is perfectly smooth, so I can't imagine what fun it'll be unloading in the rain Rolling Eyes

).

The bike is mechanically fine

Turning on the ignition appears to give no response, but it allows the indicators, horn and brake light to work properly so it must be doing something.

No headlights, taillight, side lights, dash illumination, no dash activity of any sort.

I don't use the kill switch a lot but I confirmed it's in the 'run' position. I checked it in both positions just to be sure I wasn't being a dumbass.

Battery showing 15.5v (healthy I'd say).

A late night street lamp check of the fuses did not show any problems - This includes the ignition fuse, ECM fuse etc.

So the only common factor I can see amongst this is the ECM relay which doesn't have connections to the horn, indicators or brake light circuits, but does control the ECM (obviously) which has many links to the dash, fuel pump etc but interestingly this relay is also wired directly into the headlights... Seems logical, right?

Hopefully someone with experience of Street Triples or Daytonas will confirm, or some other person generally cleverer than me will just tell me I'm talking nonsense...
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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

rpsmith79 · World Chat Champion Joined: 31 Jan 2017 Karma :

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

rpsmith79 · World Chat Champion Joined: 31 Jan 2017 Karma :

That is odd then

I don't suppose you have another battery you could try in place of the one fitted, or even bypassing your existing battery entirely and just hooking it direct to the car battery, even if just to see if the dash lights up etc

Or at least check your multi-meter on the cart battery, see if that shows 12 or 15V
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Current Bike: ~~Honda CG125 ES4~~ // ~~Honda CB600FS Hornet~~ // Triumph Street Triple R

rpsmith79 · World Chat Champion Joined: 31 Jan 2017 Karma :

Just found this thread

https://www.bikechatforums.com/viewtopic.php?t=300226

Might be worth checking the battery in your multimeter
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Current Bike: ~~Honda CG125 ES4~~ // ~~Honda CB600FS Hornet~~ // Triumph Street Triple R

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

Dr. DaveJPS · World Chat Champion Joined: 24 May 2008 Karma :

CPS? Whats the reading off the sensor?
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"intelligent inattention is preferable to unintelligent tinkering"
www.davejps.com

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

McJamweasel · BCF Junkie Joined: 22 Mar 2002 Karma :

What year is the bike?
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BCF: Be yourself, just don't be an arse.

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

McJamweasel · BCF Junkie Joined: 22 Mar 2002 Karma :

Fuckit, I'm not helping. It's time you bought a new one! Laughing

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BCF: Be yourself, just don't be an arse.

McJamweasel · BCF Junkie Joined: 22 Mar 2002 Karma :

It'll be the ignition switch. The ECM relay doesn't affect the instrument power. Indicators and horn take a different feed from the ignition than the instruments, ECM & so on.

When the ignition is on, you should get continuity between pins 1, 4 & 5 on the switch connector. If not, that's your problem.
____________________
BCF: Be yourself, just don't be an arse.

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

P. · Red Rocket Joined: 14 Feb 2008 Karma :

That, or theres some really easy to wear down wires near the headstock which split on mine and had to be extended and repaired as it literally tried to chop through them.

sickpup · Old Timer Joined: 21 Apr 2004 Karma :

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

For those that are interested, I took the tank and airbox off, and found the burned pin exactly as I expected:
https://cdn.bcf.44bytes.net/files/burnedpinsmall.jpg

and for those who are interested, here's the wiring diagram:

https://imgur.com/u3C8pw7

The brown wire goes from pin 1 on that connector and appears to connect to the starter solenoid.
____________________
British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

rpsmith79 · World Chat Champion Joined: 31 Jan 2017 Karma :

So what is the actual fix then, replace the whole plug? and is there a likely hood of it happening again?

Reason i ask is that this is one of the bikes on my shortlist for when i can afford to upgrade, so any reliability issues are handy to know about
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Current Bike: ~~Honda CG125 ES4~~ // ~~Honda CB600FS Hornet~~ // Triumph Street Triple R

P. · Red Rocket Joined: 14 Feb 2008 Karma :

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

rpsmith79 · World Chat Champion Joined: 31 Jan 2017 Karma :

Nice one, cheers for the heads up guys, will bear it in mind when i start my hunt for one
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Current Bike: ~~Honda CG125 ES4~~ // ~~Honda CB600FS Hornet~~ // Triumph Street Triple R

P. · Red Rocket Joined: 14 Feb 2008 Karma :

Trust me, I prefer the older one Laughing

So does every thief.

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

The fix in place:
https://cdn.bcf.44bytes.net/files/fuseholdersmall.jpg

Haven't had time to put the airbox and tank back on yet, but will hopefully do so today.
____________________
British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

sickpup · Old Timer Joined: 21 Apr 2004 Karma :

MarJay · But it's British! Joined: 15 Sep 2003 Karma :