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MREL power side switches the EFI relay to feed the b2 and +B. Fuel pump is triggered off FC and VC is power supply for tps etc. PSW is powersteering pressure switch, ELS is load sense and ELS2 is for integration relay.
No tool. I'll have to ground the te pin. Doing the job on spare time so as I get time I do a part so forgive if I can't provide all information. Thanks for the help.
1mouse3 wrote: so as you say there is a output on the 3 idt triggers of the ecm and not at the ignitor, so what happen if you jump wires between the two
The output needs to come from the igniter to the ECM. On a crank, backprobing the ECM harness it seems to me that the transistor is coming on but the signal is no where near 0-5V. As I said test light to battery (+ve) to igt's at igniter harness fired the coils.
ok so the voltage we are seeing is feedback from the igniter and is enough to drive the first transistor. so what we are needing to do is trace down this regulator, this my guess what we would be dealing with. The emitter off the pnp is what will lead you to the output of the regulator, I would like to know if the regulator has a 12v and ground
ran into useful info that started by me looking at my brothers car a lexus gs300 jzs161 a sister to this toyota crown jzs171 the motor came from, this came from my scan tool giving the two choices and asking if I was using the 17 toyota connector or 16 dlc connector. Being sisters would means there similar even tho being slightly different, that made me looking into the similarities of the connect. I came up with this diagram so you can hook up a standard 16 dlc
Sorry for the silence guys. Finally got back to the car and made a vid of the cam and crank signals. The owner got a working igniter and we got no difference. I am getting 4.5V at the igt's KOEO and cranking (no ECM response) @ ECM with igniter plugged in now. I tried a bypass test with test light to battery (+ve)and the fuel pump came on (once).
I grounded Te1 and E1 and only got 21 (O2 sensor) but that's expected because exhaust isn't connected and O2 is unplugged.
Yet to find a replacement ECM but I'm still looking at it as my prime suspect. I got good 5v ref, grounds are <100mV on crank, cam and crank signals are present but the ECM just isn't responding.
Last edit: 9 years 9 months ago by Caritech. Reason: Spelling error
but internally you are not getting the 5v ref for ignition control but could be because we missed a power, that is why I gave you some info to trace it down and maybe repair the computer if there is a fault with a component. if you can find another computer that is another option
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