Updates.
Ecumaster canbus expansion box and rotary boost control wired. These are great, just tap them into the canbus and add extra switches, analogue inputs to ecu etc. No fuss adding loom through bulkhead etc, and most of my outputs on ecu are already taken so needed expansion.
Closest canbus connection was to the dials so tapped into that with a twisted pair.
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Dual wall heatshrink
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Taped.
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Power tapped into switched live on stereo.
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Wires ran to area behind dash switches and connectors added so removable if dash ever needs to come off. Used superseal as got plently in stock.
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Box stashed behind dash and 8 position rotary switch wired in for boost blend.
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Whilst in the area i done some more planned bits. Ecumaster allows cruise control, i have cruise buttons but no wiring, and possibility of connecting to the ecu via the can expansion box. Ecumaster only requires brake switch, clutch switch, 2x buttons for cruise so the other buttons could be repurposed for push to pass, rolling antilag etc as necessary.
1st thing to do, add clio3 cruise squib which is the same as kangoo with extra wiring.
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Kangoo has no cruise wiring so had to add all of it that was required. I have a 182 interior loom here which has the same connector plug as kangoo squib, so depinned the connector with a good length of twisted pair wiring and fitted to the kangoo wiring plug.
I done a bit of digging on how the 197 cruise control buttons were wired as only 2x wires for 4x non latching switches. The buttons both have 2 wires coming out of each joining together into a pair to to go through the squib. They are basically a mux switch setup, resistance is triggered when a button is pressed to indicate which one is in use.
Resistance example (clio2 i think but basically the same) Verified with test meter.
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After a bit of thought i reckoned they could be wired up to an analogue input in mux config.
2.2k pullup resistor spliced in between 5v power and analogue. This is necessary for mux to prevent the input from "floating" when the switch is open or disconnected.
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I used a megane 2 cruise switch to turn the steering buttons on and off, finding which pins joined together with switch in cruise position, and used a chopped loom plug i had in stock. I could have bypassed the switch but prefer having the option to disable it fully.
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With all wiring done i dug out my ecumaster usb to can module which i used on the trophy years ago. I set it up for obd2 connection last time so can plug straight in and sniff the canbus/communicate to modules on the bus.
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Looking on the software, can switchboard was active and working. I could see analogue 1 (Cruise buttons) were responding and voltage moving from 5v when pressed showing relevant voltages as expected and analogue 2 (Boost rotary) responded when turned.
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All this left was the software on ecu to setup. At this point i realised it was not possible to correct/adjust the voltages on the mux switch setup as the ecu pre defines them, the voltages on the steering wheel were miles off so any button pressed would register all 3 switches pressed. Bugger.
Que a bit of head scratching. I looked at adding resistors to get me to the required voltages for ecu to be happy but was not straightforward as would require multiple resistors fitting from a few calcs. Stripped down the buttons to see if possible to change resistors but its a mini circuit board with a chip in each, so again not easy.
Done a bit of research and ecumaster has 3x virtual outputs that can be configured to activate on specified analogue voltages. I configured them to work individually specifying the required voltages that were logged on the switchboard
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Checking on the logs, they all work great and respond fine.
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Activated cruise. This requires 2x buttons, one to start/stop and one to resume. Added some base settings and it actually works. I need to revisit the brake switch wiring as brake needs to go to an analogue as its been wired incorrectly on the pnp wiring (not by me) but for all purposes, its been tested and works.
Ill sort the brake switch out soon, simple change.
Also had geo done. The geo lift was on the piss years ago when i set it up last and camber on passenger side was reading incorrectly. I adjusted it on the day and it was obvious with a quick check it was a degree out on the passenger side. Always meant to change it but never got round to it, drove OK.
Done a bit of trigonometry and spirit level to set the camber at home yesterday as annoyingly the geo lift does not have a lifting beam to jack up. Scuttle off to access ast top mounts.
View attachment 1790073View attachment 1790072Basic but accurate and both sides now match again. Works out -1.7deg.
Also refitted the ferodo ds1.11 pads up front as it will be needing good brakes soon..
Thanks for reading!!