Honda 954 ecu cdi

alex5202 · 10-12-2008, 5:10 PM

Why are ecu s / cdi units for Honda fireblade 954 sold by themselves if they are only compatible with the keys that came with it/bike? (are not any use without the key). I ask this as I bought one myself to be then told that is the case, also others say I need the loom as well. (which I don't think as the loom is not coded/chipped just key and ecu). Any suggestions welcome.

alex5202 · 10-13-2008, 9:23 AM

Anybody?

Canguro7 · 10-26-2008, 12:10 AM

is that really true? i doubt.

what is the loom

Twincam · 10-26-2008, 8:07 AM

It depends if the bike had HISS. All new Hondas' I believe have Hiss inbuilt as standard, and that therefore means the HISS key (chip inside the top) is coded to the ECU. You cannot add anymore keys without an existing key.

Bikes without HISS installed e.g. USA bikes do not have coded keys BUT the wiring loom is different therefore the ECUs cannot be interchanged (from what I have read on here)

Ive seen them on ebay (whole lock set (tank and tail), hiss key and ecm) for about £400-500...

alex5202 · 10-27-2008, 8:45 PM

Quote:

Originally Posted by Twincam

It depends if the bike had HISS. All new Hondas' I believe have Hiss inbuilt as standard, and that therefore means the HISS key (chip inside the top) is coded to the ECU. You cannot add anymore keys without an existing key.

Bikes without HISS installed e.g. USA bikes do not have coded keys BUT the wiring loom is different therefore the ECUs cannot be interchanged (from what I have read on here)

Ive seen them on ebay (whole lock set (tank and tail), hiss key and ecm) for about £400-500...

Thank-you that sounds about right.

Twincam · 10-28-2008, 3:39 PM

Quote:

Originally Posted by alex5202

Thank-you that sounds about right.

No problem

Cecil · 11-12-2008, 4:59 AM

While on the subject........... Is it possible to set the HISS from the clock cluster? Amount of blinking(LED light), ect. If so.........., how is it done?

patchseven · 01-20-2009, 11:25 PM

I assume the controls for the blinking red led are contained in the cluster somewhere, as I have installed a US ecu in my AUS bike (removing the HISS) however the red led still blinks exactly as if the HISS were still operating normally.

You would probably need a fair bit of electronics know how to change the flash frequency etc.... as i said it is probably hard wired so a change in resiatnce or capacitance at some point in the circuit would be needed to do it.

alex5202 · 01-21-2009, 1:46 PM

Quote:

Originally Posted by patchseven

I assume the controls for the blinking red led are contained in the cluster somewhere, as I have installed a US ecu in my AUS bike (removing the HISS) however the red led still blinks exactly as if the HISS were still operating normally.

You would probably need a fair bit of electronics know how to change the flash frequency etc.... as i said it is probably hard wired so a change in resiatnce or capacitance at some point in the circuit would be needed to do it.

It does go turn itself off after so long doesn't it? (flashing)

firebladeking · 01-21-2009, 2:04 PM

Quote:

Originally Posted by alex5202

Why are ecu s / cdi units for Honda fireblade 954 sold by themselves if they are only compatible with the keys that came with it/bike? (are not any use without the key). I ask this as I bought one myself to be then told that is the case, also others say I need the loom as well. (which I don't think as the loom is not coded/chipped just key and ecu). Any suggestions welcome.

Hi Alex,

that is a bloody good question, I just checked my parts list for the 929 and you can purchase the ECU from honda and it does not come with any pre-programmed keys, this would suggest to me that honda has a way of programing keys to a new ECU?

you will only need the loom if you do a USA non HISS conversion

patchseven · 01-21-2009, 5:51 PM

Even if you do a non HISS USA conversion, you wont need the loom, there are only 2 wires which need relocating on the plug which plugs into the ecu, and these are easily swapped with a pair of needlenose pliers, or a pair of tweezers.

Twincam · 01-21-2009, 5:55 PM

The light does turn off after a period of time (to conserve battery power) and you can also turn it off some how (its been talked about on here before as people have mistakenly turned it off)

FBK, do you get any chips with the ECU?

firebladeking · 01-21-2009, 8:50 PM

Quote:

Originally Posted by Twincam

FBK, do you get any chips with the ECU?

no, the parts manual I have just shows the ECU as a part that you can order on its own, therefore Honda must be able to program you existing keys to a new ECU, otherwise they would sell the ECU with a full lock set??

firebladeking · 01-21-2009, 8:51 PM

unless my manual is for a US version?

Twincam · 01-22-2009, 7:31 AM

I wouldn't have a clue, but it seems strange. Honda couldn't programme a key when I needed one to my ECU without an existing key (or I could pay £1000 for a new ECU) so when I recieved the V5, I went to the previous owners house and he gave me everything (log book, service history, both keys + both fobs, recipt etc)

patchseven · 01-22-2009, 7:14 PM

Quote:

Originally Posted by alex5202

It does go turn itself off after so long doesn't it? (flashing)

The flashing light only turns itself off under two circumstance that I am aware of.

1. The battery is disconnected (duh, no power = no LED)
2. The ignition is turned to the on position - thus no need for the light

It is there purely as a theft deterent, to show theives that might wish to take the bike that there is a security system on board. What would be the point of a theft deterent that turns itself of after a certain time?? kinda pointless theft deterent if the theives cant even see it.

Mine however works still exactly as it did before I removed the HISS, ie it flashes when the bike is sitting by itself, and stops flashing whenever I turn the ignition to on, thus making me beleive it is hard wired to the guage cluser, rather than connected to the HISS in any way.

firebladeking · 01-22-2009, 8:10 PM

Quote:

Originally Posted by patchseven

Even if you do a non HISS USA conversion, you wont need the loom, there are only 2 wires which need relocating on the plug which plugs into the ecu, and these are easily swapped with a pair of needlenose pliers, or a pair of tweezers.

hey patch,

do you know which 2 wires need swapping? i don't need to do the conversion, just curious?

patchseven · 01-22-2009, 8:34 PM

I know there is no Pink wire on the AUS ignitions, while my US ignition had a pinkie, so I had to splice the pink wire from the US ignition into the one of the wires from the AUS HISS system (since they were already run from the location I wanted to the ecu it just meant I didnt need to run an extra wire), then relocated the other end of that wire to the pink position on the ECU plug. I think I had to move one other wire to make the US wiring diagram match up with the AUS wiring diagram, but Ill check and see if i can dig up my notes from when I did it when I get home.

Basically I just took the two wiring diagrams, and checked every connection on the ecu plug to make sure they lined up, only two were in different positions, from memory.