hazard lights not working

I'm looking for some troubleshooting help for my XJ1100 hazard system. have replaced the 2 terminal flasher unit,tested the switch-ok. wiring is good from plug to front signals. The normal turn signals work fine and the running lights work. It was working,but now has stopped. Is there a possibility the cancelling unit or the reserve lighting unit causing the issue? If no in these units, I would like to try and rewire it to get it to work.

Thanks.

 

Not sure how the system works on the 1100's. US XJ750's, for instance, don't have 4-way flashers. However, on the smaller XJ's, the self-cancelling module actually enables the 3-pin flasher by grounding the Yellow/Green wire. If the cancelling unit were bad, there, turn signals would either never flash, or never cancel.

Standard troubleshooting questions:

1. Did this ever work (for you)?
2. If so, when did it stop working?

You mention rewiring. Do you have reason to believe that someone has modified the wiring?

Two-pin flashers normally take power on one side and load on the other. Do you have 12V on either side of the two pin?
A) With the switch on
B) With the switch off

 

I had them working before I had a voltage spike from loose fuses that fried my tci box. With the switch on there is 12 V on both sides of the flasher. I t is a 2 pin flasher on lh side of bike behind battery. the main flasher is on rh side in front of battery.

 

There have to be some diodes involved somewhere, to keep the 4-way circuit from breaking the left/right functionality.

What colors are the wires on the two sides of the flasher?

I would guess that the load side of the flasher (which you can determine by disconnecting it and looking for the side without 12V), runs to a diode block which should then feed two diodes. The cathode ends of those diodes should then connect to the Dark Brown and Dark Green (if Yamaha is consistent on wire colors) of the left and right turn signal pairs.

I'd look around for a diode block and make sure it's properly connected. You can also verify some of the functionality by turning on the switch and jumpering the load side of the flasher to the left side or right side turn signal wiring.

Worst case, you can pick up a couple of 3A rectifiers from Radio Shack and connect the two anodes (ends without a stripe) together at the load side of the flasher, one cathode to Dark Green, and the other to Dark Brown, bypassing whatever wiring and diode block was originally handling this.