OBD reader problem

wstar · 05-08-2009, 04:11 PM

Ok, just got back from my drive with the ScanGauge (old model). Apparently the old ScanGauge does support CAN, just not as automatically. With the default (autodetect) setting, it was not able to communicate with the car (and worse, whatever it does for autodetection shuts off my VDC, and it won't come back on until I turn the car off and on again, kinda like what happens with bad sensor inputs).

However, deeper in the setup you can manually force which protocol to speak to the car with. There's a huge list of them, with names like PWM, KPW, ISO, CANSF, CANLF, CANSS, CANLS, etc.. The only one that worked was CANSF. If I put the old ScanGauge into that mode (then turned the car off and back on again to clear up VDC), it worked fine. No other mode worked at all. So yeah, likely your scan tool just doesn't support the newer protocols.

05-08-2009, 04:11 PM	#5 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3595	Ok, just got back from my drive with the ScanGauge (old model). Apparently the old ScanGauge does support CAN, just not as automatically. With the default (autodetect) setting, it was not able to communicate with the car (and worse, whatever it does for autodetection shuts off my VDC, and it won't come back on until I turn the car off and on again, kinda like what happens with bad sensor inputs). However, deeper in the setup you can manually force which protocol to speak to the car with. There's a huge list of them, with names like PWM, KPW, ISO, CANSF, CANLF, CANSS, CANLS, etc.. The only one that worked was CANSF. If I put the old ScanGauge into that mode (then turned the car off and back on again to clear up VDC), it worked fine. No other mode worked at all. So yeah, likely your scan tool just doesn't support the newer protocols. __________________ 7AT Track Car! Journal thread / Car setup details

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