OrgDawg Posted January 2 Report Share Posted January 2 The new transmission I have put in my car don’t have the transmission speed sensor. So now the ecu cant read speed nor can my dash is there anyway I can get speed signal from the abs? Or other solutions? Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 2 Report Share Posted January 2 It would be helpful to know what model car you have and what ecu. Quote Link to comment Share on other sites More sharing options...
OrgDawg Posted January 2 Author Report Share Posted January 2 10 minutes ago, Adamw said: It would be helpful to know what model car you have and what ecu. Subaru wrx , with link g4x Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 2 Report Share Posted January 2 It's like extracting blood from a stone sometimes... What version/year/model WRX? Does it have traction control and DSC? And is it a plug-in ecu or wire-in? m0sad and dx4picco 2 Quote Link to comment Share on other sites More sharing options...
OrgDawg Posted January 2 Author Report Share Posted January 2 45 minutes ago, Adamw said: It's like extracting blood from a stone sometimes... What version/year/model WRX? Does it have traction control and DSC? And is it a plug-in ecu or wire-in? It’s a 2003 WRX , with a plug and plug link G4x , no traction control Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 3 Report Share Posted January 3 I think splicing into a wheel speed sensor will likely work in this car, It will depend on how sophisticated their fault checking is and whether the -ve is isolated from ground or not (the diagnostics manual suggests it is not isolated). The easiest access is probably in the main ABS unit connector. Pin 9 is the FL wheel speed signal, try splicing into this and connect it to a spare DI on the ECU. In the ecu software, set FL wheel speed to the DI you connected it to, make sure the pull-up is off, set the calibration to say 1000 as a starting point and go for a drive to see if you get a speed reported in the ecu and no ABS lights on the dash. If that works then report back and I will give further info on how to get the speed signal to the dash. TTP 1 Quote Link to comment Share on other sites More sharing options...
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