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Topic summary

Posted by Troll
 - July 01, 2014, 09:17:46 AM

Probably not

Posted by Harleymanz
 - July 01, 2014, 09:08:12 AM

Ok will do I noticed a clicking sound down near the fuel injector and I had to feed the positive to the fuel pump a few times before it would actually pump any sign of another problem ?

Posted by Troll
 - July 01, 2014, 07:38:41 AM

Check for power at the points listed with the key on.

Posted by Harleymanz
 - July 01, 2014, 06:44:40 AM

Where do I start ?  Ticket to Florida ?  :).

Posted by Troll
 - June 30, 2014, 13:24:15 PM

The pump is not being controlled by the computer, as it's supposed to be. If you have to put B+ to the wire at the pump, then there is most likely an open circuit between the relay and the pump. There is a junction where the B+ wire runs to pin 31 on the computer (turns it on) and the main efi relay. There should be power at all the points with the arrow pointing to them. The relay is ok, because the computer will not turn on without it. Simple broken wires will make you crazy until you find them

Posted by Harleymanz
 - June 30, 2014, 12:35:18 PM

Ok update I pierced a wire on gas tank positive ran it to the positive on battery. Fuel pump came on and bike started to turn over and then died after I removed wire.

Posted by Harleymanz
 - June 30, 2014, 09:52:05 AM

I used the pin down on wire 5 got the required voltage.  Still no pump.  You are talking about a ground.  Is there a way of testing that ? I so owe you what ever beverage you drink ! Is there a fuse I may be missing ?

Posted by Troll
 - June 27, 2014, 11:08:42 AM

    Ok, back from the garage. I have pictures! First off, let me apologize for assuming everybody can read and understand a wiring diagram. I've been in the auto service business for 45 years, and I'm a G.M. special electronics tech, or was, before I "retired". I look at these systems and I can automatically see how they work. I know that not everybody looks at these and can do that. These are really simple circuits, especially compared to a car, so let's look at what I found. First off, no matter which book you look in, pin 5 on the white plug of the computer is listed as unused. This is NOT true. I fought for and got this information from Kawasaki's dealer only tech line. Pin 5 carries a reference voltage from the ign. switch to prove to the computer that the switch has not been tampered with. I back probed the connector and got a ref. voltage of 0.765 V D.C. Back probed??? What does that mean... Simply, it means you take a long, thin needle (I snagged one with a big knob on the end) and slide it down along the wire past the weatherproof seal, until it bottoms out against the connector. YOU DO NOT PIERCE THE WIRE!!!! This method gives the most accurate results without damaging the harness. Without this signal to the computer, then fuel pump will not run. I hope the diagrams make more sense, now. There is a power ground for the fuel pump that goes through the computer. At key up, the ground is complete, and the pump runs for 2 seconds. If you don't start the engine, the ground goes open (no path for power flow). If the engine is running, the path to ground is continuous as long as the power is on.

Posted by Troll
 - June 27, 2014, 09:52:57 AM

OK...so here's what I'm going to do. The weather here is currently pretty nasty, with thunderstorms and torrential rain, like we've been having all "spring", so I decided to try to help with this problem some people are having by taking voltage and resistance readings on my own bike, and publishing them here. I'm going out the garage right now, and I'll have the readings, a diagram and a picture of the mysterious "pin 5" on the computer, and it's voltage from the switch to the pin.

Posted by Harleymanz
 - June 25, 2014, 13:37:44 PM

No fuel pump did not come on.  I ran a line from battery to fuel pump and it came on and bike started and stuttered and quit

Posted by Troll
 - June 25, 2014, 13:00:48 PM
Quote from: Harleymanz on June 25, 2014, 11:50:32 AM

No I was reading on here and most said replace ignition switch so I did.  Didn't help :)

Do you hear the fuel pump come on and prime the system?

Posted by Harleymanz
 - June 25, 2014, 11:50:32 AM

No I was reading on here and most said replace ignition switch so I did.  Didn't help :)

Posted by chief
 - June 25, 2014, 09:37:10 AM

First, how did you know the switch was the problem in the first place? Did you test the switch and find a fault?

There are a lot of reasons why a bike will crank but not start...
Posted by Troll
 - June 24, 2014, 21:29:13 PM

white/red is B+ off the relay, the other one (black/white) runs to ground through the computer...

Posted by Harleymanz
 - June 24, 2014, 20:58:21 PM

Ok what color on the pump ?  So if I ground it the bike should start ?

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