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sergei wrote:Here is how you can approach this:
Open up your ecu and read the labels inside for the corresponding pins.
Then find a random ECU diagram for similar car, and confirm that the abbreviations are for what you think is for.
EDIT: what you after is VS (AFM flap signal) and IGT (Igniter signal from ECU) pins. Don't take injector driver as RPM signal as it will show 0rpm on off throttle and inconsistent in between (as sometimes injectors fire twice, and sometimes once per cycle).
matt dunn wrote:sergei wrote:Here is how you can approach this:
Open up your ecu and read the labels inside for the corresponding pins.
Then find a random ECU diagram for similar car, and confirm that the abbreviations are for what you think is for.
EDIT: what you after is VS (AFM flap signal) and IGT (Igniter signal from ECU) pins. Don't take injector driver as RPM signal as it will show 0rpm on off throttle and inconsistent in between (as sometimes injectors fire twice, and sometimes once per cycle).
Ok, I too quite some time ago tried to get a wiring diagram for the AE92 AFM.
The answer is that it does not exist.
None of the toyota forums I ever found had a diagram for DLI and AFM.
And the ECU pins are not labelled on the inside of the case so pulling it apart does not help.
I gave up and we used a MAP loom and ECU,
but you could find them by tracing them back from the AFM and igniter with a multi-meter and the ECU unplugged.
jakesae101 wrote: can i possibly take the afm signal from the afm itself insted of tracing the cable back to the ecu?
jakesae101 wrote:http://opc.mr2oc.com/online_parts_catalog/Jspec4AGZE_wiring.pdf looks promicing
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