Hey everyone!

Got a real good one here...

Have a 1jzgte vvti out of a jzx171/jzs161 99-02? either way same motor/ecu. This motor has a single butterfly etcs-i setup (unlike the early dual butterflys) and is a 5 plug ecu setup.

Motor is in an s14 240sx chassis (which is in theory irrelevant)

Using wilbo666's diagrams/pinouts we have successfully got power and ground to ecu and can get the motor to fire but runs like absolute trash. Zero throttle response at all unless you engage the last 20% of the throttle plate which is manual control for limp mode.

this throttle body has two TPS sensors. One is attached the the throttle cable, referred to as the accelerator pedal position sensor. This is essentially the "desired" throttle position. That relays voltages back to the ecu which then sends voltage to the throttle motor which opens the plate. there is a second TPS which reads the "actual" throttle position after the ecu opens the plate. this is what controls regular throttle use, idle and if applicable, traction control.

Both TPS's have their 5v reference signal, ground and are both pumping out correct voltages to the ecu. The ecu however is NOT sending voltage back hto the motor to open the plate.

We can not for the life of us figure out why.. continuity is good on all wires to the ecu.

It seems like its in a limp mode.

SOOOO we pulled codes off it. For whatever reason i could not get my snap on scan tool to communicate with the ecu. thinking its JODB protocol conflicting with obdII.. not really sure. so we went old school, jumped the diagnostic pins and wired in a MIL light. Tons of codes. assuming lots of them are for the auto transmission that is no longer there but cant seem to find a list of the codes.
Codes read as follows:
24
31
39
41
46
62
63
65
68
75
76
77


Looking for any insight, brainstorming, easy answers.. anything.. HALPPPPPPP

Thanks guys

-Evan

 

Not sure if you're still having these issues or if you have figured them out, but I was having similar issues with a JZX110 DBW ETCS-i swap into a GS300.

I would start with troubleshooting your MAF.

I had some similar codes and found that I didn't have 12v to my MAF. Yours may just be bad.
Search the internet on how to test it. The FAR RIGHT wire if you're looking at the wire side of the plug, is the 12v.





Codes:
24 -intake temp
31-Mass Air Fow sensor
39-?
41-Throttle Position sensor
46-?
62-?
63-?
65-?
68-?
75-?
76-?
77-?