non starting gsxr . HELP!

[T18CON.]

Originally Posted by redto

rlay with 4 pins. (1) power to relay for what is being switched (2) switched power to whatever is being switched in this case fuel pump (3) power to activate the relay (4) to ground the switch in this case pin 3 you should have continuity to ground on this pin check to earth with ohmmeter

you should only have power at (1) when relay not switched and power at (1) (2) and(3) when you are activating the relay. when the relay is activated

you should hear the relay clicking when it is energised

you could bypass the relay with power straight from the battery with a small jumper cable.

Is that 1.5v at the relay terminal or at the pin on the ecu?
If it is at the relay terminal check the wiring diagram for any splices in the wire plus check the terminals the relay plugs into for dry joints , corrosion etc.

i have 1.5v at BOTH the ecu AND one of the terminals of the relay.

no clicking when energised

[Crashbandit]

I have a k3 wiring diagram here. What colours are the 4 wires to the relay. If they're the same, I can tell you what to check
To view pics on this biker's forum - your post count must be 2 or greater.

[T18CON.]

i have the k7 wiring diagram, double and triple checked, none showing continuity to earth, 3 showing 12v with ignition on, one showing 1.5v. the yellow with red is the switched wire, which is the one showing 1.5v

[Crashbandit]

Originally Posted by T18CON.

i have the k7 wiring diagram, double and triple checked, none showing continuity to earth, 3 showing 12v with ignition on, one showing 1.5v. the yellow with red is the switched wire, which is the one showing 1.5v

Two things. First, remove relay and join Red/blue wire to Yel/Red. Check with multimeter at fuel pump Pos to Yel/Red and Neg to Black/White. You should have 12v.

If that's ok the ECU isn't switching the relay for some reason. The yellow/black wire should switch to ground from the ecu. Connect Pos lead of multimeter to battery positive and Neg lead to the Yel/black wire at the ECU. Multimeter should read 12v when you switch on ignition.

[T18CON.]

tried the first one of those, no power across fuel pump terminals.

[Crashbandit]

Originally Posted by T18CON.

tried the first one of those, no power across fuel pump terminals.

Check no 5 fuse, test with multimeter see if there is 12v both sides of fuse.

[T18CON.]

yep , both sides of fuel pump fuse fine, but its no.3 fuse on a k7 , or is it the ignition fuse you want me to check?

[seansligo]

id sat it"s to do with your immobiliser is the red key light on on the dash

[Crashbandit]

Originally Posted by T18CON.

yep , both sides of fuel pump fuse fine, but its no.3 fuse on a k7 , or is it the ignition fuse you want me to check?

Even though it says fuse 3 is fuel. The red/blue wire at relay actually comes from fuse no 5. So if you have no power at relay then you should be checking fuse no 5 or red/blue wire between fuse 5 and relay.

[the landshark]

Check using a light bulb rater than a meter, corroded connectors/wire shows up more readily when theres a bit of load there