Short When Ignition Turned On

Hi guys,

I'm a MUPPET. I have managed to leave my Tiger 885 carb's ignition on over night. Drained the battery and also caused some damage somewhere.

I have recharged the battery and used a different battery for testing.
When I turn the ignition on there is a current draw of 1 amp from the battery and battery voltage drops to about 9 volts. What have I cooked by leaving the ignition on ?

Starter relay seems fine. Operates ok and a reading of 4 ohms across the coil. Not sure what else to test or how to test it. I have a digital multi meter so can test Volts, Amps and Ohms, but only 10's of Ohms upwards really.

Any pointers welcome.

Thanks.

Rob.

 

Been playing.
So far I have disconnected

• the main ecu
• starter motor
• the single coil, and the two coil on plug things
• Indicator relay
• engine stop switch
• front lights
• rear lights
• alternator
• instrument cluster
• starter relay

With each disconnected I measured the resistance between the battery terminals when the ignition is turned on.
Each time the resistance drops from infinite (above 200 ohms anyway) to about 15 ohms.
Not sure what I'm missing.

I can't see any burnt wiring outside the taped loom. Should I start removing the tape and looking for shorts ?

Any hints would be welcomed.

Thanks.

Rob.

 

Hey Sprinter.

The ignition switch seems to test ok. I followed the Haynes diagram and it seems to short the correct pins and only the correct pins on the connector at each switch position..

 

Removed by previous owner. Just have a bunched of taped wires. It has run in this condition so I haven't played with them. Though best not to wake the beast.....

 

I have gone over the bike disconnecting items and testing the resistance between the battery terminals when the ignition is switched on.

• I've disconnected the starter motor feed wire from the starter motor.
• The starter relay (Currently sat on my desk waiting to go back on)
• The single coil and two coil on plug things.

(I removed the low tension feed wires and the HT lead from the coil. Removed the plug caps from the spark plugs and the low tension leads from the caps)

• The side stand switch plug
• The pick up coil ( Is this the camshaft sensor ? )

The main 60 Amp fuse circuit is the one with the short. I have pulled each fuse and tested. With the 60 removed, no more short.

Thanks some much for all your help guys.

 

Hey capt.

No fuel pump on this one. It's a 1996 Tiger 885 Carb. No fuel injection.

This is a link to the diagram.
http://www.robsbots.me.uk/?page_id=83

 

There is a separate feed to the headlights. This was added for a single light that was on it when I got it. Currently all the front lights are disconnected including relays.
The cooling fan and relay are currently disconnected. This was my next job after the head lights.

Just unwrapped the alarm wiring. All wires are cut off. Two grey wires are soldered together. The bike has run in this "configuration".

Regarding the main fuse. It's actually a 30 Amp and it's the center fuse on the diagram, red in, white out.

Thanks guys.
So close to getting this bike on the road and I go and make a Muppet move like this. There aren't enough swear words.

 

I took the coils off as a group. Everything else I have unplugged, tested, then reconnected. I have left the headlights, tail lights, fan circuit and starter solenoid unconnected.
The short only occurs when the ignition switch is on.

I may start from the top and test each item again and make sure I haven't missed anything. I'll start by checking out each contact on the ignition switch in each postion, then work my way though each component and connector.

 

It's a bit of work, but I think you might be right.
Label every connector.
Pull them all, then start plugging them back in and testing.
Time for a coffee and a ciggy, then I'm to look for my masking tape and a black marker.