FIC O2 connection - Toyota Yaris Forums

gkarystinaios · 02-04-2015, 01:41 PM

I finally connected FIC with the O2 modifier wire just taped on Signal+ wire(no resistors)
and without the vacuum hose!
the car with the jumper harness works exactly like before! but when I plugged fic for the first time the car was hardly running even at idle and the check engine warning went ON
The OBD reads the warning like "MAF sensor low circuit input" and after 1-2 minutes with engine struggling also "crank and cam position sensor problem"
then i erased the warnings and INCREASED the MAF voltage by 4% the car now runs ok but it has sometimes unstable IDLE and when i step hard on the throttle it stalls for ~1sec!

I'm running the z107 firmware and stock engine for now(2sz)
any thoughts?

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02-04-2015, 01:41 PM	#9
gkarystinaios Drives: yaris Join Date: Jan 2015 Location: greece Posts: 13	I finally connected FIC with the O2 modifier wire just taped on Signal+ wire(no resistors) and without the vacuum hose! the car with the jumper harness works exactly like before! but when I plugged fic for the first time the car was hardly running even at idle and the check engine warning went ON The OBD reads the warning like "MAF sensor low circuit input" and after 1-2 minutes with engine struggling also "crank and cam position sensor problem" then i erased the warnings and INCREASED the MAF voltage by 4% the car now runs ok but it has sometimes unstable IDLE and when i step hard on the throttle it stalls for ~1sec! I'm running the z107 firmware and stock engine for now(2sz) any thoughts?