[Solved]2jz no start

Hello all. I'm having a no spark, no inj pulse on a 2jzge vvti that I'm wiring into a RX8O Toyota Cressida.

On first day test firing the igniter was switching, I didn't have my uscope yet so I used my test light to B+, backprobed the control wires of the coil @ the 10 pin igniter harness and it was flashing on each. I took that as a sign of control on the 3 igt wires by the ecu, the igf stayed @ 5V through out (no spark). I believe this could be causing the no inj pulse.

Went back today with the uscope and discovered there were no signs of switching from the igniter. Cam and crank are coming in and on a crank the igt's stay in mV while it should be 0-5V. I was able to fire the coils by using test light to B+ and touching igt.

Any help would be appreciated.

Hey Caritech, Got a diagram by any chance???
Seems like an igniter failure, nice that you are able to verify the cam and crank signals into the module.
Sounds like you need to check the power and ground on the igniter next and go from there.

where do you stand at test with the crank/cam signal from distributor to the ecm. The cam is dual trigger G1/G2, the crank is NE, and ground is G. Scope that out to see if it is correct and here is a waveform I found for reference. I take it that the igt is the trigger and is inactive on input from crank/cam to the ecm. I see STA is a start feed and NSW is run feed, do they give power and what about the grounded shielding and ignitor

This is DIS engine (no distributor) with 3 coils, waste spark. Cam and crank share NE- as ground, G2 is cam signal and NE+ is crank. Igniter gnd maxes @ 120 mV and drops to 90's mV on the crank, tested using voltmeter. Power feed to the igniter is good. Tested the signals @ the ECM harness.

fair enough you went with a newer motor than thought, do you have the TC off the ecm hooked to a dlc to talk to it so you can see if there is a rpm. do you also have a power on VC, +Bm, NSW being start trigger, BATT being fuel trigger and IGSW being run on the ecu, unsure about ELS2 and EL5 having power.

I haven't put power t o ELS2.
No EL5 or TC on the pin out I have.
Powers and grounds, NSW, STA
5V ref is good.

what year is this engine and is the ecm in use for this engine

Caritech wrote: a 2jzge vvti that I'm wiring into a RX8O Toyota Cressida.

I need more help with what you are doing. Leave the technical engine specs out of it because that isn't how we look up info in our systems. I need year, make, model and engine size in liters for the car you are working on and for the car that is being adapted to the car you are working on. Thanks!

Shoot, I didn't see any replies! I though mine was the first one. Why did that just happen? Weird.
Maybe my question was already answered. I'll go back and look now. Sorry guys

Nice job on your testing so far. Especially the test light bypass test on the IGT circuits!
I need a diagram of what you are working on to help.

from what i see is he has a car that would be 92 at the latest and the motor being used would be 96 or newer, so I find that information relevant to get the right diagram.

I believe there might be an issue with a immobilizer not hooked and you not having the key, did this setup come from a lexus

Sorry for the late reply guys, was out the entire day. The diagram I'm using is from a 1997 2jz from a jzs155 that was sold in Japan. The diagram and pin out are in Thia and Russian. The ECM has none of the features to support immobilizer; ksw, code etc. For some reason I can't/haven't figured out how to post pics. I'll put a link for you to get an idea.

gallery2.plebeians.net/v/cars/supra/PossibleJSZ155/Pin-out-2JZ-GE-VVT-i_1_.jpg

Thanks for the assistance.

Link didn't work...

Noah wrote: Link didn't work...

Oh boy. Yeah I had to Google "jzs155 wiring diagram" for it to work. Thank you.

here is the photo you linked, give me second to look them over

from a look through this to find relevant items comparing to a 98 supra diagram to get a understanding what Im looking at, this is what I picked out. I believe off some searching that the ecm has 3 coil trigger output and let me know if any of this is helpful

BATT= power input
ElS= power input
EC= ground
E1= ground
E01= ground
E02= ground
PSW= switched ground unsure what for
IGSW= run trigger
NSW= start sense before park neutral
StA= start sense after park neutral
MREl= fuel pump trigger
+B= fuel pump trigger sense may also be a power input
+B2= fuel pump trigger sense
VC= a power output
#10-#60= injector outputs
IGT1= 1st coil trigger
IGT2= 2nd coil trigger
IGT3= 3rd coil trigger
TGF= a feed back
ELS2=AC clutch sense

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.

what is marked as TDCL is a oem data link, this pin out of the connector and if you got a tool to up to it that be great

thanks for the feed back