My car doesn’t have any CAN1 connections but does have Chassis high-speed lan exposed at pins 12 &13.
Checking http://docs.macchina.cc/m2/technical-references/installation.html & https://github.com/macchina/m2-hardware/blob/master/M2/Interface%20Board%20Schematic.pdf I don’t see these pins connected anywhere so am assuming I should just cut/modify the pin connections on the M2 to connect pins 12 & 13 to 3 &11
What car?
If its ~2007+ it absolutely has to have regular high speed CAN on pins 6/14…its an OBD requirement…
First step is to figure out what databus system your vehicle has. You shouldn’t have to modify your M2 to communicate with the standard buses.
If your vehicle supports CANBUS and has more than 2 CANBUS networks you can hardwire to your M2 but first step is to identify what system you have. Just because it says “high speed lan” doesn’t mean CANBUS… Could be LIN, K-LIne etc.
In a commercial vehicle you could have additional networks available as well.
As per this thread it is a 2013 VF commodore.
Sorry for not making myself clear, what I meant to say was I dont have CAN1 pins 3 & 11 as per http://docs.macchina.cc/m2/technical-references/installation.html so was thinking I should modify the M2 to talk to pins 12 & 13 but maybe not after dmaxben pointed out that I can probably poll everything via the BCM
Thanks for the link but I do have a digital copy of the manual which I will need to have a good read off, in it it states the X84 Data Link Connector connections avail are
• Pin 1 Low speed GMLAN communications terminal
• Pin 2 Class 2 communications terminal
• Pin 3 Mid speed GMLAN serial bus (+) terminal or Object high speed GMLAN serial bus (+) terminal
• Pin 4 Scan tool power ground terminal
• Pin 5 Common signal ground terminal
• Pin 6 High speed GMLAN serial data bus (+) terminal
• Pin 7 Keyword communications terminal
• Pin 11 Mid speed GMLAN serial bus (-) terminal or Object high speed GMLAN serial bus (-) terminal
• Pin 12 Chassis high speed GMLAN serial bus (+) terminal
• Pin 13 Chassis high speed GMLAN serial bus (-) terminal
• Pin 14 High speed GMLAN serial data bus (-) terminal
• Pin 16 Scan tool power, battery positive voltage terminal
Which is funny because pins 2,3,7&11 aren’t populated in the obd connector
Via a modified cable as per SWCAN Hack I believe have confirmed pin1 is infact SWCAN
Ok so basically you have 2 high speed buses. One is chasis (Air bag, brakes etc most likely)and the other is likely the engine and transmission. The class 2 and mid speed don’t exist in your vehicle.
You should be able to connect the second CANBUS to the other highspeed bus and leave the SWCAN and CANBUS #0 connected to the regular bus.
Without looking at the docs you may have to rewire or use a UTH with a connector.
Note that the SWCAN may not be fully working for SAVVYCAN so the hack may be necessary for now.