FJR 2007 not starting

[Rickard]

Greetings.

I own a FJR1300 year 2007 that recently went dead, going through the manual's troubleshooting and reading online forums makes me think either the fuel injection system relay or the wiring related to it is faulty. The problem is I have no Idea were this relay is and I have not been able to find useful information about it online, can anybody help me with this issue?

Thanks in advance.

 

[JamesK]

This relay is located in the front of lower part of the nose cowl, below and in the center of the headlight assembly. You can reach this relay without removing any Tupperware, it's a bit of a tight squeeze but you can get to it.

You didn't really clearly explain "how" the bike is not starting, i.e. does the starter turn over, does it just click, etc. depending on the exact symptoms it could be a faulty starter, a faulty starter solenoid (which you can't really get to without removing the nose cowl).

 

[Rickard]

Thanks for your reply.

I'll explain the issue with more detail: The bike sat in my garage for a couple of months as I was abroad, about a week ago I went to check on it and here's how it went:

Day One: I tried to turn it on but the battery was dead, I recharged it and the bike worked fine.

Day Two: I find out the battery is dead again, so I replace it, afterwards when I try to turn the bike on with the new battery, self-diagnostic error 12 pops up on the LCD and I can't turn the bike on (starter motor won't crank). I checked the crankshaft position sensor resistance and it seems fine (around 500 ohms).

Day Three: The error 12 seems to magically disappear, I go into diagnostic mode and reset the stored errors, it also indicated there are no current error messages, however when I try to turn the bike on, the starter cranks but the engine just won't start, it's been like this ever since.

I've been tinkering with the diagnostic mode, everything seems fine but I found out that the actuator for the injectors are not working (d:36, d:37, d:38 and d:39), the manual says I should hear a relay sound but I don't hear a thing.

I've also taken the entire tupperware down to see if there was any disconnected wire, but no luck with that.

 

[JamesK]

From memory, the injector diag does not sound like a loud relay click, more like quiet and quick ticking. I assume the fuel pump checks out ok right?

While everything is apart, it might also be a good idea to confirm that connectors in the top right hand corner under the tank are not corroded. I know this is a famous problem for the Gen 1 FJRs, so it's good to check even on the Gen 2.

 

[lnewlf]

Fuel pump runs...? if not-possible problem with the two small terminals in the ignition switch-they supply power to the ECM

 

[Rickard]

Fuel pump checks out OK (it makes a whirring sound when I turn on the switch or actuate it), I'll be sure to check the connectors you say JamesK, as well as the relay.

Hopefully this issue is nothing but a wiring problem.

 

[Donal]

Have you checked the position of the stop/run switch?

 

[mcatrophy]

Have you checked the position of the stop/run switch?

Won't turn the starter.

Possibly flooded?

 

[Donal]

If there is a possibility that it is flooded - I would recommend that you pull the plugs and then give it a good spin with several 5 second cranks on the starter motor to clear any unburnt fuel. Have a good look at the plugs to ensure they are 'dry' before you refit them.

Others have done this without pulling the plugs, just holding the throttle wide open and then cranking away. My personal preference is to be gentle on the starter system.

'Flooding' often seems to occur if the engine has been started but not allowed to fully warm up.

 

[Rickard]

I've tried cranking with the throttle wide open but no luck. I'll try pulling the plugs as soon as I get the appropriate tools.

This relay is located in the front of lower part of the nose cowl, below and in the center of the headlight assembly.

I believe you mean this big one:

I have not been able to find a pin diagram/schematics for this relay, do you know where can I find this diagram or otherwise how to test this relay?

 

[ionbeam]

The relay shown in post #10 is the Relay Unit (item #79) which contains the Starter Cutoff Relay (item #80) and the Fuel Pump Relay (item #81) as shown on the schematic at the back of the Factory Service Manual (FSM). The relay has complicating issues with several internal diodes making it difficult to bench test.

With the relay plugged in, check diAG code 09 and see what the Fuel System voltage is, look for a nominal 12.0 volts. This should be the positive voltage going to all 4 injectors. The ECU turns on the individual injectors by grounding them.

Using diAG actuator code 50 you should be able to hear the fuel pump turn on and run five times and you should see an accompanying flash of the Engine Warning Light. When you try to actuate the fuel injectors you should hear the injectors turn on and run five times and you should see an accompanying flash of the Engine Warning Light. The injectors will sound vary faint. If you see the Engine Warning Light flash it shows that the ECU is doing its job and all running conditions have been met (sensors, etc are good).

 

[Rickard]

Well, it seems the relay is fine as voltage is normal (12v) and I can hear the fuel pump run five times through the diAG actuator code 50. I'll try Donal's suggestion regarding the plugs and post about it afterwards.

 

[Rickard]

My FJR is alive !

I took out the fuel tank, pulled the plugs and checked for spark, there was no spark. I then traced the ignition coils' wires back to the bike's ECU, and there it was: one of the wires in the ECU's connector corresponding to one of the ignition coils was loose, I placed the wire back in its place and finally, finally the bike came back to life.

Even if at the end the problem was one miserable loose wire, I really appreciate your help guys, pointing me to the spark plugs was the key in solving this issue.

 

[Mihalis fjr]

My FJR is alive !I took out the fuel tank, pulled the plugs and checked for spark, there was no spark. I then traced the ignition coils' wires back to the bike's ECU, and there it was: one of the wires in the ECU's connector corresponding to one of the ignition coils was loose, I placed the wire back in its place and finally, finally the bike came back to life.

Even if at the end the problem was one miserable loose wire, I really appreciate your help guys, pointing me to the spark plugs was the key in solving this issue.

Happy end!!