Wesdavis243 Posted November 15, 2023 Report Share Posted November 15, 2023 Hello! I have a wiring specialties rb25 Neo swap harness with there can module and running link g4x fury. I just noticed I have no vehicle speed to the ecu. I was wondering if anyone has the easiest way to get vehicle speed. I have no problem tapping into a wheel sensor but I don’t know the settings it would require. It is a 2 wire sensor so I just need to tap into 1 of the wires and run it to a DI on the ecu. Trying to avoid using a gps module. Thank you! Quote Link to comment Share on other sites More sharing options...
Adamw Posted November 16, 2023 Report Share Posted November 16, 2023 You dont need a CAN module, there is a 350Z CAN mode already in the ECU, I would wire the CAN straight to the ecu and it will get all 4 wheel speeds from the ABS via CAN bus. Quote Link to comment Share on other sites More sharing options...
Wesdavis243 Posted November 16, 2023 Author Report Share Posted November 16, 2023 Just so there’s no confusion I am talking about wiring specialties CAN module that comes with the harness to make the Speedo and everything work. I did set that up in the ecu with the CAN settings in the beginning. So I assume that your saying the actual CAN is not wired into the ecu currently with that harness. Do you have a general idea on the steps on how I would wire the CAN to the ecu? Thanks! Quote Link to comment Share on other sites More sharing options...
Adamw Posted November 16, 2023 Report Share Posted November 16, 2023 No extra module should be required at all. The ECU can natively output all OEM 350Z CAN messages, we make 350Z plug-in ECU's that dont use any extra module. It sounds like they have wired it like this: ECU CAN>CAN converter module>350Z bus. I would change it to: ECU CAN>350Z bus. Quote Link to comment Share on other sites More sharing options...
Wesdavis243 Posted November 18, 2023 Author Report Share Posted November 18, 2023 The Link will also keep my dash working? So basically I just need to bypass there can module. Quote Link to comment Share on other sites More sharing options...
Adamw Posted November 18, 2023 Report Share Posted November 18, 2023 Yes, as well as A/C, Fans, wheel speeds, and the imobaliser which all work over CAN Quote Link to comment Share on other sites More sharing options...
Wesdavis243 Posted November 20, 2023 Author Report Share Posted November 20, 2023 I talked to wiring specialties and with there swap harness the ac won’t work if I bypass there CAN module. So I am just going to tap into the front right speed sensor. Do I need to unplug the sensor or can I leave it plugged in and just tap into the wires? Also do I need to run both wires to the ecu to a DI and a sensor ground? When click on the DI to set it up do I just click FR wheel speed and then it will work? Thank you Quote Link to comment Share on other sites More sharing options...
Vaughan Posted November 20, 2023 Report Share Posted November 20, 2023 As Adam said above the Link ECU when using the 350Z CAN mode and connected directly to the factory CAN bus performs all the required CAN functions of the factory ECU, this includes receiving the AC Request over CAN and transmitting the AC Clutch status and engine fan statuses over CAN. Quote Link to comment Share on other sites More sharing options...
Adamw Posted November 21, 2023 Report Share Posted November 21, 2023 Im pretty sure the 350Z wheel speed sensors are magnetoresistive so will not work connected directly to the ecu. I would try bypassing the WS CAN module to start with as its only 2 wires and a setting change in the ecu. You could probably even just unplug the module and poke 2 bent paperclips into the connector to loop the ECU CAN direct to 350Z bus. I cant think of any reason why it wouldnt work or why the module is needed, it really seems like it was designed for an application where you are using an ECU without a 350Z CAN mode. Without CAN, the next easiest option to get a speed input into the ECU would probably be a cheap GPS speed sensor. Quote Link to comment Share on other sites More sharing options...
Wesdavis243 Posted November 21, 2023 Author Report Share Posted November 21, 2023 I went ahead and just bridged the wires on the connector and then changed the CAN settings to 350z. Everything is working such as fans and all the dash as well. But I still don't have vehicle speed lol. i attached my tune to see if there is a setting i need to change or if i am looking at the wrong section. I can also do a log if need be. Thanks! after bypass WS CAN module.pclx Quote Link to comment Share on other sites More sharing options...
Vaughan Posted November 21, 2023 Report Share Posted November 21, 2023 Wheel Speeds are coming in on CAN DI Freq 1-4, set LF Wheel Speed to CAN Freq 1 and so on, leave the calibration values as 0. Then in that Setup area set your driving and driven wheel speed sources. Quote Link to comment Share on other sites More sharing options...
Wesdavis243 Posted December 2, 2023 Author Report Share Posted December 2, 2023 . Quote Link to comment Share on other sites More sharing options...
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