Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post

ztan · 09-14-2015, 07:46 AM

I've been looking at the ECU datasheet to see if there is a way to use the counter in the ECU to directly measure pulse width off a square wave using the advanced timer unit (ATU III).

Unfortunately, the Evap line 20(A35) connects to the A/D converter at AN_B43 and I can't see that it has a trigger for the ATU directly.

Does anyone know of which pins in the ECU connectors are available to trigger the timer, or does anyone have a disused ECU to post to Australia which I can disassemble to try to trace one? Even a bricked one ok as I just need to trace connector pins to the chip.

09-14-2015, 07:46 AM	#8
ztan Senior Member Join Date: Jul 2013 Drives: Toyota 86 Location: Gold Coast, Australia Posts: 311 Thanks: 44 Thanked 360 Times in 144 Posts Mentioned: 60 Post(s) Tagged: 0 Thread(s)	ECU to measure frequency I've been looking at the ECU datasheet to see if there is a way to use the counter in the ECU to directly measure pulse width off a square wave using the advanced timer unit (ATU III). Unfortunately, the Evap line 20(A35) connects to the A/D converter at AN_B43 and I can't see that it has a trigger for the ATU directly. Does anyone know of which pins in the ECU connectors are available to trigger the timer, or does anyone have a disused ECU to post to Australia which I can disassemble to try to trace one? Even a bricked one ok as I just need to trace connector pins to the chip. Last edited by ztan; 09-14-2015 at 09:11 AM.