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geno_mr2sc · 07-16-2009, 11:09 PM

I am interested in the voltage output on a normal (code-free) MR2SC at the OX port on the ECU. Mine seems low, but the BGB does not show a value for this port.

My understanding of the o2 circuit is that the ECU supplies a voltage (unknown value) and looks for average .5 volts from the sensor on line Af in a pattern that switches from high to low.

My sensor is outputting values in the .1 volt range, but tests OK on the bench (easily puts out 1V, drops quickly, etc.).

At this time it seems reasonable to assume that the voltage being supplied by the ECU from port Ox is not right, but I don't have a normal value to compare to.

07-16-2009, 11:09 PM	#4 (permalink)
geno_mr2sc No Skills Join Date: Jul 2009 Location: Flyover Zone Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	voltage at OX I am interested in the voltage output on a normal (code-free) MR2SC at the OX port on the ECU. Mine seems low, but the BGB does not show a value for this port. My understanding of the o2 circuit is that the ECU supplies a voltage (unknown value) and looks for average .5 volts from the sensor on line Af in a pattern that switches from high to low. My sensor is outputting values in the .1 volt range, but tests OK on the bench (easily puts out 1V, drops quickly, etc.). At this time it seems reasonable to assume that the voltage being supplied by the ECU from port Ox is not right, but I don't have a normal value to compare to.