Hi. We have a Honda Civic 1.8 5D (2007) with I-Shift Automatic Manual Transmission. Car has abt. 89 000km little in relation to its age.

Transmission has not been in maintenance for years and most car service companies are refusing to touch the transmission because of I-Shift.

Mainly transmission works but there are couple of issues.

- clutch is "jerking" (engaging/disengaging in rapid pace) when driving with very slow speed and especially when starting to drive and turning simultaneously.

- sometimes but rarely the transmission will not change to larger gear and the car stays at high revs much longer than it is supposed to.

- fault codes report: P19FF Clutch Friction Coefficient Value out Of Range


- Clutch was replaced about 2011 because of overheating issues and transmission control had multiple software updates between 2007 and 2013ish.

- transmission oil is oldish, replaced around 2013 at about 40 000 - 50 000 km.



- I am little bit worried about the jerking as I-Shift has history of issues. How do you think the issues above could be solved?

- 1. replacing transmission oil

- 2. "recalibrating" clutch and transmission control software.


I read from google that "learning of the clutch stroke and adapting the control algorithms" might solve something. Do you think it would be a good solution and how often it has to be done? Can somebody describe what kind of procedure this is? Is it so simple that a computer nerd can do it (just with a computer + software + some dongle without any other tools or accessing clutch or transmission box). Or would you need to do some mechanical procedures to the clutch? How likely it is that mendling with transmission control software will make the problem worse or break the transmission or clutch?

Is there anything else that needs to be done, e.g. replacing clutch fluid or is that only for manual transmission?

Do you know where I could get maintenance manual of this car model?

Any links to any useful instructions would be appreciated.

Thank You

 

Can't say I know much of anything about the Honda I-Shift. I don't think we got those in the US market.

I can say I had a Smart Fortwo with the automated manual transmission with a single dry clutch. It was acting up in a very similar manner. It was the clutch actuator that was misbehaving and needed replacement and calibration. Could be a similar situation.

 

Could be very well the same thing with different branding. Yes I think clutch actuator is the culprit. Do you know anything about recalibration process...?

 

Nope but I suspect it requires an HDS or clone to tell the computer to perform the calibration.

I have an Autel that has the HDS functionality. Foxwell is another brand. Honda offers a pay for access to the service data.