I'm hoping I can get a solution to an issue I'm having with my Gen2 powered Smart Car. I've got a low pressure hydraulic switch plumbed in-line with the clutch and when I put the clutch in and brake - I get a C40 code. I understand that to be an ICS valve code, but I've also found references to the clutch switch. I know the hydraulic switch is working and I only get the code under the circumstances I mentioned. Is there any work around for this? Should I go to a clutch switch from the Hayabusa motorcycle? I've tried both high and low pressure hydraulic switches and they both react the same way. Thanks in advance.
clutch switch problem....
- Thread starter m3456y
- Start date
Crank it up, remove two wires to clutch switch and run it like normal if it doesn't do it after a few tries it's the clutch switch. the vibration could be making the switch act up and code happen. I had this happen on dyno yesterday and did test and no c40 code.The stock switch the contacts stick sometimes.. here is another test i ran it to redline and rolled off the throttleand let engine do the braking instead of pulling clutch in no code...
Sort of a old thread but I wanted to put my findings here. I've recently installed a brembo clutch mc with a hydraulic brake light switch. After doing so I quickly received the same FI c40 code. After some diagnosing and design research I determined that the hydraulic switch is too sensitive by itself. Basically the clutch signal gets sent to the ecu before the clutch is actually in, resulting in a ICS valve false positive. One fix is to find a hydraulic switch with a proper operating psi, a difficult thing to find... Anther option is to add one of these things, DC 12V Normally Opened Type Trigger Delay Relay Delay Circuit Module FC 31 | eBay
I ended up finding a aftermarket mechanical switch for a brembo rcs clutch mc. It's a bit pricey for what it is but should clean up the install nicely for those that don't want to wire in a delay relay. KOKEN (KOKEN DENKA) : Brembo radial master for cylinder mechanical Switch kit [KOK-2002] It took alot of digging to find this thing...I just hope it works as needed for a hayabusa.
I was wondering if this switch worked for you or not. I have bought both brake and clutch masters for my busa. Having problems finding a switch for the clutch side.
This is in regards to Gen 2 , do not know if okay on Gen 1 .
I bought a Japanes switch , think it is Koken ( still got it in cupboard ) for RCS . Fitted it all up , went to try it out and after 5 - 10 min. got a code up on dash . Cut a long story short that switch did the opposite of what I needed the switch to do . Solution was to keep the original clutch switch untouched and connected as factory to loom , but moved out of the way neatly , but where you can press the trigger easily . So , you press switches trigger and hit the starter at the same time and that is it , no need to touch the trigger until you want to ever start the bike . Now Fallenarch has fitted a switch to his RCS setup , and his works fine , I don.t know what type of switch he runs . We did answer this fairly recently , but I cannot locate the thread .
Here is pic of my simple remedy .
Here it is, Willy got it from me
https://hayabusa.org/forum/threads/clutch-switch-on-brembo.189010/#post-3226256
https://hayabusa.org/forum/threads/clutch-switch-on-brembo.189010/#post-3226256
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