Project: Reversing / Disabling Stop/Start feature

ICE, Equipment, Options

Project: Reversing / Disabling Stop/Start feature

Postby duncho » Mon Feb 02, 2015 11:35 am

I played a bit with an idea how to reverse Stop/Start feature to achieve that it's disabled by default with driver's ability to turn it ON whenever needed. The goal is to achieve:
- Easy installation for owners without any experience and DIY skillsUse of the original S/S switch, which currently is used for deactivation and make the installation as simple as possible without any additional wires needed (ACC, Ground, etc...)
- If there is sufficient idle current supplied by BCM, the module should consist of 2 wires only, which will be connected to S/S switch directly
- Module should not require any modification to existing car electrics, such no warranty issues
- Easy to remove if necessary, without leaving any signs of previous modifications

As you can see on the diagram, BCM trigger goes to S/S switch which is shorted to the ground when pressed:
image_1.jpg


In idle state, there is 12V (supplied out of BCM) and 0V when S/S switch is pressed:
image_2.jpg


Here is principle diagram of how it works:
SS_module.jpg


timing chart:
SS_delay_chart.jpg
Last edited by duncho on Thu Jul 21, 2016 10:22 am, edited 1 time in total.
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Project: Reversing / Disabling Stop/Start feature

Postby duncho » Mon Feb 02, 2015 12:20 pm

With the latest S/S module version, it works like there was S/S switch and no button installed directly from the factory, by means that it memorises the last S/S state and keeps it always as selected by the driver.

How it works:
- If you wish to keep S/S disabled, when ignition is ON or the engine is running, just press S/S button once in order to disable Stop/Start. The module will remember your preference and will deactivate S/S feature 5 seconds right after each engine start.

- If you decide to keep S/S activated and turn this mod OFF (as it was designed by the manufacturer), just press S/S button once again to activate Stop/Start (ignition need to be ON or engine must be running). The module will remember your preference and will not act and thus S/S feature will remain functional i.e. active on each engine restart.


Short demonstration video: http://goo.gl/X0nCEW

S/S Module Installation instructions:

1. Dismantle the lower instruction panel

2. Disconnect blue connector from S/S switch

3. Unbind textile tape from disconnected cabling on the whole its length (approx. 10 cm) including the factory made joint (in my case the joint was insulated with blue plastic insulation tape)
Image
full resolution photo: https://postimg.org/image/8f37rcexr

4. Cut S/S module wires to appropriate length and connect black S/S module wire - to uninsulated factory joint on black wire
Image
full resolution photo: https://postimg.org/image/9g3gggvxb


5. Connect white S/S module wire - to red wire on existing cabling


6. Connect red S/S module wire - to 5A fuse located on the 3rd position (marked as METER_IG) by using Piggy-Back fuse holder: http://www.aliexpress.com/item/Add-A-Circuit-Fuse-Tap-Piggy-Back-MICRO-Fuse-Holder-APS-ATT-mini-LOW-PROFILE-12v/32225438279.html
Image
full resolution photo: https://postimg.org/image/i9ucxkivz

Image
full resolution photo: https://postimg.org/image/a32d5zstb


7. Stick S/S module with 3M double side tape to main white connector and bind S/S cabling with TESA automotive textile tape as it was originally and plug blue S/S connector back to S/S switch. This is the final "look" with module installed. It is barely visible that any mod was done ;)
Image
full resolution photo: https://postimg.org/image/4dm4lomn3


8. Mantle the lower instruction panel back on to its original location

9. Enjoy! 8-)
Last edited by duncho on Thu Jul 21, 2016 3:20 pm, edited 11 times in total.
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Project: Reversing / Disabling Stop/Start feature

Postby Beardyman » Mon Feb 02, 2015 12:40 pm

I'm sure I have a button that allows me to turn off stop/start?
I haven'y played with it yet as I don't have any problems with stop/start at the moment. next time I get chance, I'll take a pic.
its on the panel alongside the button to turn off the parking sensors, lane departure warning, below and to the right of the steering column (RHD vehicle).

Perhaps it's not what I think it is?
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Project: Reversing / Disabling Stop/Start feature

Postby AlleyCat » Mon Feb 02, 2015 12:47 pm

[quote="Beardyman"]I'm sure I have a button that allows me to turn off stop/start?
I haven'y played with it yet as I don't have any problems with stop/start at the moment. next time I get chance, I'll take a pic.
its on the panel alongside the button to turn off the parking sensors, lane departure warning, below and to the right of the steering column (RHD vehicle).

Perhaps it's not what I think it is?
[/QUOTE]
It only turns it off until you turn the car off.
Then it comes back on again (at the next start up).
Ducho wants it to be off permanently hence the project.


AlleyCat2015-02-02 12:47:27
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Project: Reversing / Disabling Stop/Start feature

Postby Beardyman » Mon Feb 02, 2015 12:49 pm

Okay, thanks for that info. Good to know in advance rather than just "pressing buttons" to see what happens.
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Project: Reversing / Disabling Stop/Start feature

Postby SplanK » Mon Feb 02, 2015 2:21 pm

I would love to offer my help, but I lack a volt meter (my last one died and I never replaced it!), but also having a new born to look after changes your priorities a bit!

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Project: Reversing / Disabling Stop/Start feature

Postby duncho » Mon Feb 02, 2015 2:45 pm

[quote="SplanK"]

I would love to offer my help, but I lack a volt meter (my last one died and I never replaced it!), but also having a new born to look after changes your priorities a bit![/QUOTE]

I know exactly what you mean, we have also got one in mid of January. I will continue with this "project" in March upon my return.

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Project: Reversing / Disabling Stop/Start feature

Postby DaveBerlin » Mon Feb 02, 2015 3:02 pm

This modification from Dan will highly likely work as Dan does seem to have a way with Electronics and I do not doubt his efforts and advice. I suppose my concern is should owners really start playing around with Nissan Electronics when we all know what Happens when the S_ _ _ Hits the Fan and there is No Nissan Guarantee Backup. I am most probably being a little too cautious on this subject but that is just my opinion - Dave
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Project: Reversing / Disabling Stop/Start feature

Postby montimar » Tue Feb 03, 2015 9:15 am

The first thing I do after starting the engine is switch off the stop/start system. I never ever want to use it so this mod looks good to me. I read in one of the motoring mags a few years ago that unless the engine was stopped for longer than 6 to 8 secs you used more fuel on the restart than what you saved by idling. Lets be honest the stop/start system is a way to get the car into a lower tax bracket not to save fuel.
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Project: Reversing / Disabling Stop/Start feature

Postby Qash » Tue Feb 03, 2015 9:15 am

I would like to disable the entire system because not function as start stop system should work. Mine is more like "start-stop-start-all within four seconds" feature which is only annoying.
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