littlefeck Posted October 31, 2017 Report Share Posted October 31, 2017 Has anyone any information for getting the stock RX8 Dash to work with the G4+ over CAN Bus? Quote Link to comment Share on other sites More sharing options...
Adamw Posted November 1, 2017 Report Share Posted November 1, 2017 A brief google suggests there might be a chance of getting it to work. Taken from this page here: https://www.cantanko.com/rx-8/reverse-engineering-the-rx-8s-instrument-cluster-part-one/ the below info suggests just those first two ID's would give you a working dash. 500Kbit/sec rate. I dont have enough experience with OEM CAN conventions (if there are any) to know what the byte order will likely be but trial and error will probably work that out. If you have a car fitted with a G4+ and its already running and connected to the CAN bus then I can give you a couple of examples to try. Quote Link to comment Share on other sites More sharing options...
littlefeck Posted November 1, 2017 Author Report Share Posted November 1, 2017 Thanks Adam, haven' installed the ECU yet but thr info youve supplied should help out. Quote Link to comment Share on other sites More sharing options...
cj Posted November 1, 2017 Report Share Posted November 1, 2017 This guy has a really good process on how to observe and reverse engineer canbus signals http://bobodyne.com/web-docs/robots/MINI/CAN/MINI_CAN.pdf His example use a mini but the process applies to everything. Its basically push the car through some known states eg press gas pedal, speed up, slwo down, turn steering wheel. Graph the output of each stream of data coming across the can bus, then try to map what you did to something you can see happening on the canbus. I've done this myself on a subaru using one of these https://www.aliexpress.com/item/Dual-Channel-USB-To-CAN-Analyzer-DeviceNET-iCAN-VRMS-CANOpen-J19339-CAN-Analyzer/32359550686.html?spm=2114.search0104.3.1.TSYAka&ws_ab_test=searchweb0_0,searchweb201602_4_10152_10065_10151_10344_10068_10345_10342_10547_10343_10340_10341_10548_10541_10084_10083_10560_10307_10175_10060_10155_10154_10056_10055_10539_10537_10312_10536_10059_10313_10314_10534_10533_100031_10103_10073_10102_10557_10142_10107,searchweb201603_25,ppcSwitch_5&btsid=c137e58f-7221-4cd6-8e73-88f833c9f482&algo_expid=3d31339c-5443-452b-a5c7-85399dba71d8-0&algo_pvid=3d31339c-5443-452b-a5c7-85399dba71d8 It looks really daunting to start with as literally nothing has labels, but as soon as you get your head around which devices are which ID's you can start to focus on things that matter - eg tacho signal has to come the ecu, speed has to come from the abs computer (check wiring diagrams but this is usually true) so you have a pretty good idea where to look, graph each block of data, then look for a graph pattern that matches what you did with the vehicle, then work out the scale of it. You may want to start by watching the ID's that are present and the time intervals of them and disconnecting abs/ecu/body control computer/etc to start with as the first step. Remember you dont have to understand all of it, just the signals you are sending from the ecu or receiving via canbus (eg speed) FIS 1 Quote Link to comment Share on other sites More sharing options...
cole watson Posted April 6, 2018 Report Share Posted April 6, 2018 Join this Facebook group. https://www.facebook.com/groups/all4swap/ its run by Yury who makes a CANVerter for the analog signals speed,tach,CEL and oil light to work with the CAN dash in the RX8 I have just brought one to swap an RX8 dash into my RX7. Quote Link to comment Share on other sites More sharing options...
littlefeck Posted June 18, 2018 Author Report Share Posted June 18, 2018 @Adamw Hi Adam, I am currently trying to configure the CAN bus on my base map but am having some difficulty making sense of the example data to plug into it. Also is it possible just to send a frame of data to keep the power steering working - 200 00 00 FF FF 00 32 06 81 // EPS doesn’t work without this 202 89 89 89 19 34 1F C8 FF // EPS doesn’t work without this http://www.madox.net/blog/projects/mazda-can-bus/ has additional information but I cant make sense of the ID that sends individual wheel speed (link ECU receives) 000004B0 0,1 Left Front Wheel Speed Check Order. Scale = (X-10000)/100 km/h, unsigned (Refer to handle position). Correlates with 00000020F vehicle speeds. 000004B0 2,3 Right Front Wheel Speed Check Order. Scale = (X-10000)/100 km/h, unsigned (Refer to handle position). Correlates with 00000020F vehicle speeds. 000004B0 4,5 Left Rear Wheel Speed Check Order. Scale = (X-10000)/100 km/h, unsigned (Refer to handle position). Correlates with 00000020F vehicle speeds. 000004B0 6,7 Right Rear Wheel Speed Check Order. Scale = (X-10000)/100 km/h, unsigned (Refer to handle position). Correlates with 00000020F vehicle speeds. 000004DA 0,1 Steering Column Angle (X-32768)/10 Degrees, Clockwise +ve. The id is shown above as 000004b0 but the ID in the ECU is numerical only. I have attached my base map and am using CAN bus 2 rx8.pclr Quote Link to comment Share on other sites More sharing options...
Adamw Posted June 19, 2018 Report Share Posted June 19, 2018 Try attached, I have done this for someone previously so only tested some of it. This will give you the 4 wheel speeds, power steer should work as well as speedo, tacho & temp gauge. rx8 with CAN.pclr FIS 1 Quote Link to comment Share on other sites More sharing options...
cole watson Posted January 8, 2019 Report Share Posted January 8, 2019 So this will work for getting the wheel speeds to the ECU rather than via the DI's? Id like to save these inputs if possible. Also is there a way to turn the termination resistor off to turn the ECU into an node as i am planning to add another device to input CAN signals to the dash which already has the terminator built in. Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 8, 2019 Report Share Posted January 8, 2019 yes, this will receive wheel speeds via CAN. The termination resistor can only be removed (unsoldered) but try it as it is at present, I have had systems work fine with 3 resistors connected before. also attached an updated map that has a bit more CAN bus dash functionality set up. RX8 CAN example.pclr Quote Link to comment Share on other sites More sharing options...
cole watson Posted January 9, 2019 Report Share Posted January 9, 2019 Wow. That's awesome, nice work! I'm a total noob when it comes the CANbus so what exactly does this send to the dash? looks like you have added oil pressure, but what are the VA8 outputs in stream 4? That virtual output is turned off. are they used to turn off other warning lights? Things I require are: RPM Charrge Speed inc Odometer Check engine light Cruise on light Coolant temp Oil pressure (via ANV input 10bar sensor) ( i know the dash works off a switch but can the ecu output at say 25psi and above or something?) This will be for my RX8 running a 1JZ VVT-i using the RX8 e-throttle with Aircon. Ive attached my installer IO. Planning to run a Fury and it would be nice to save on some of the AUX outs and DI's. ECU-IO (1).pdf Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 10, 2019 Report Share Posted January 10, 2019 The VA8 is just used to generate a constant. VA8 cannot be used for anything else and must remain set to off for this to work. I can't confirm if the ODO works as I haven't had feedback from anyone on that. The cruise light wont work but everything else you mention should. Quote Link to comment Share on other sites More sharing options...
Dannobre Posted January 11, 2019 Report Share Posted January 11, 2019 Does anyone have the CAN iD for the clutch switch, Brake pedal, Neutral switch or is it just easier to hard wire them? Quote Link to comment Share on other sites More sharing options...
cole watson Posted January 12, 2019 Report Share Posted January 12, 2019 4 hours ago, Dannobre said: Does anyone have the CAN iD for the clutch switch, Brake pedal, Neutral switch or is it just easier to hard wire them? Both of those inputs are directly sent to the ECU Neutral - pin 2O Brake - Pin 4P Quote Link to comment Share on other sites More sharing options...
littlefeck Posted July 1, 2019 Author Report Share Posted July 1, 2019 I am having trouble to set up the Cruise control light. I believe I have the correct ID (Message id="0x165" (decimal 357)) How can I set the different values to output correctly? Cruise Main Indicator" offset="6" length="3" endianess="big" off value=0 ready, not active (yellow) value=2 ready, value set (yellow" value=3 active, value set (green) value=5 Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 2, 2019 Report Share Posted July 2, 2019 Unfortunately the Cruise control status and cruise light functions dont currently work over CAN. Quote Link to comment Share on other sites More sharing options...
ThatDamnRanga Posted July 15, 2019 Report Share Posted July 15, 2019 I know I'm a notorious moaner when it comes to CANBus, but given my frustrations I've begun development of what would effectively be a configurable translator module to allow Link ECUs to operate in vehicles that are heavily dependant on CANBUS (my GT86, the above RX8 etc)... Unfortunately that comes with a feature request, as currently both the ECU and the translator module find themselves having to waste considerable numbers of I/O pins on functions which would ordinarily be transmitted over CAN. Note that I'm not asking for improvements in the CAN environment to enable direct OEM integration. As I appreciate that's a lot more work, and simply not on the roadmap. What I'd like to see is a number of 'Virtual I/O' pins which can be assigned to any function as if they were physical pins. So a pin like 'CAN DI #1' would have a page like 'DI 4' does. Giving me the ability to assign a Start Switch, Traction Control Switch or GP Input for Map Switching. Virtual analogue in might be more difficult, but it would be helpful in situations where the CAN bus presents an input with a linear value (torque reduction request, etc) And the same kinda thing for the outputs. This would save Link engineers from having to create specific code to make things like Cruise Control indicators work over CAN. You could simply assign them to a virtual output. Quote Link to comment Share on other sites More sharing options...
Benginetuner Posted August 8, 2019 Report Share Posted August 8, 2019 Sorry to dig up an old thread, but I couldn't get the rx8 can file to open? Quote Link to comment Share on other sites More sharing options...
cole watson Posted August 8, 2019 Report Share Posted August 8, 2019 Take a look in the ECU controls / CAN setup. What ECU do you have? Quote Link to comment Share on other sites More sharing options...
alexjohn Posted August 19, 2019 Report Share Posted August 19, 2019 On 1/9/2019 at 7:23 AM, Adamw said: yes, this will receive wheel speeds via CAN. The termination resistor can only be removed (unsoldered) but try it as it is at present, I have had systems work fine with 3 resistors connected before. also attached an updated map that has a bit more CAN bus dash functionality set up. RX8 CAN example.pclr the canbus file for can bus rx8 1jzvvti ? ecu link strom Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 20, 2019 Report Share Posted August 20, 2019 19 hours ago, alexjohn said: the canbus file for can bus rx8 1jzvvti ? ecu link strom This file is not for any engine in particular, I think from memory it was based on the Link RX7 basemap. Quote Link to comment Share on other sites More sharing options...
alexjohn Posted August 20, 2019 Report Share Posted August 20, 2019 canbus file for rx8 runing gauge oem....use engine 1jz ecu strom ? Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 20, 2019 Report Share Posted August 20, 2019 9 minutes ago, alexjohn said: canbus file for rx8 runing gauge oem....use engine 1jz ecu strom ? Yes. Just copy the settings out of this file into your map. You can open two instances of PC Link side by side to make it easy. Quote Link to comment Share on other sites More sharing options...
Benginetuner Posted September 10, 2019 Report Share Posted September 10, 2019 So I've copied everything can over into my thunder to get the rx8 dash to work. I cut the OE can wires at the rx8 ecu and connected the thunder can wires there. Trouble is now the stock immobiliser won't turn off. Is there a way the thunder can tell the car it's okay to de-immobilise? Or is it a case of just rewiring the key/starter solenoid? Sorry, CAN newbie here Quote Link to comment Share on other sites More sharing options...
littlefeck Posted September 10, 2019 Author Report Share Posted September 10, 2019 The rx8 immobiliser is made up of the engine ecu, remote keyless entry box (rke) gauge cluster and the key pickup. When you remove the stock ecu the immobiliser function is now gone. Everything should work but youll get a flashing light on the dash. The rke has a wire that flashes this directly to the gauge cluster. If you cut this wire the light will be gone. Ill look at my wiring diagram for you tomorrow. Quote Link to comment Share on other sites More sharing options...
Benginetuner Posted September 11, 2019 Report Share Posted September 11, 2019 Thank you Littlefeck. So when my car wouldn't crank the immobiliser light was flashing. I plugged the stock rx8 ecu back in minus the can hi/lo wires. Still no crank, immobiliser light flashing. Reconnected can hi/lo wires and it ran 2004 UK model rhd Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.