Adaptronic and 1JZ and Fuel pump

[Gibbon]

Hi

I have finished wiring in my Adaptronic to my 1JZ. I get all the right readings when cranking, and all the sensors appear to be working fine.

But it won't fire. I suspect the fuel pump is not switching on.

I have it wired up to Aux 1, and have set this in the software. With the OEM ECU I could hear it run for a second or two after turning the motor off - but I can't hear it with the adaptronic.

Does anyone know what the software settings need to be to run the pump?

Thanks

[midnight_purple_GA70]

what kind of output is Aux 1? is it a ground switching output or a 12v output?

if so how do you have it setup to the pump?

im running a microtech but it has a dedicated fuel pump relay wire...

basically the fuel pump relay is
pin 30 12v fused
pin 85 ground via microtech
pin 86 12v ignition on
pin 87 to fuel pump positive

the microtech will run the pump for 20 or 30 seconds if it does not detect ignition it will turn it off...

if the aux 1 on the adaptronic is a 12v output then send it to pin 86 and then ground pin 85

not sure how relevant this all is though

[manny]

It's usually pretty straight forward - we selected the wired up Aux output, 3 in our case but 1 is used in yours, set type to fuel pump in the drop down box, PWM and Invert deselected, and in configure we have 3000ms for both Prime and Trigger timeout.

Have you put a multimeter across the output to verify it's switching?
Are you running through a dedicated relay now or have you left the factory Fuel Pump ECU or COR setup there?

[Gibbon]

It's usually pretty straight forward - we selected the wired up Aux output, 3 in our case but 1 is used in yours, set type to fuel pump in the drop down box, PWM and Invert deselected, and in configure we have 3000ms for both Prime and Trigger timeout.

Have you put a multimeter across the output to verify it's switching?
Are you running through a dedicated relay now or have you left the factory Fuel Pump ECU or COR setup there?

I'm using the female plugs taken from an old ECU - and wired the pins up to the adaptronic - a DIY plug and play loom. Lets me swap ECU's if needed. The wire for the fuel pump from the body loom is connected directly to AUX1 on the adaptronic - so the factory setup is all the same.

Does the power setting need to be adjusted at all?

EDIT:

Looking at the wiring diagram and the factory ECU pinouts:

Pin X16 - FP - Fuel pump goes to the fuel pump relay
Pin X14 - FC - ?? - goes to a Circuit Open Relay which seems to contain a switch for a line going to the fuel pump

Does X14 need to be connected as well?

Multimeter reading across the Aux output shows 0.009v when that Aux is enabled.

Cheers

[manny]

I think you'll find that you need to feed the aux out to the FP relay direct (X16?) and bypass the COR (X14) now as the Adaptronic now controls the safety logic for pump run time on cranking, engine running and no revs detected.
That's how I've run it on the Soarer - to bypass the fuel pump ecu(COR equivalent in your case) and just run a fuel pump relay instead.

[JP]

on a normal older toyota EFI system you need to switch the COR. The COR provides power to the fuel pump relay, so if it's not switched the fuel pump relay will not get power. It's easy to test with the ignition power on, ground X14 and if the pump runs then that's the wire you need to connect to the Adap as the fuel pump control.

On airflow metered cars the COR trigger usually comes from the AFM, on MAP sensored cars there's a pin on the ECU to swtich it.

[Gibbon]

Spent a very frustrating couple of hours chasing wires and undoing looms.

This is a 1JZ in a MA61 - wired up by Sideshow about 4 years ago.

Turns out I was wasting my time connecting up X16 - the Fuel pump pin - it's not connected to the body loom Cut off about 4 inches above the ECU plug.

X14 is connected, and runs off into the engine bay - somewhere under the fusebox.

The adaptronic is only putting out 0.6 on the Aux pin.

So - where to find the fuel relay in an MA61? or is it possible to take the signal out of the adaptronic and boost it to 5v - I wonder if that would run the pump.

[JP]

what's the stock ECU for the 1J? JZA70/X81 or JZX90/JZZ30

[Gibbon]

what's the stock ECU for the 1J? JZA70/X81 or JZX90/JZZ30

It's a JZX81

[JP]

If sideshow wired it correctly so it runs like a stock JZX81 fuel circuit, then pin 14 in the 26 pin plug is the one you need to wire your adap fuel pump control Aux out to. It's pin FC on the PCB. Pin 16 is for the switching of the fuel pump resistor which isn't required with the adap.

The adaptronic creates a ground circuit on the aux output to switch the circuit opening relay, you shouldn't measure any voltage referenced to the black adap ground wires when it's active. It should be open circuit when the fuel pump control is off in the adaptronic.

In the adaptronic configuration, set the aux out to fuel pump, and deselect the PWM check box. Also make sure the invert box is not selected.

[Gibbon]

Seems like that perhaps it's not wired correctly. Although it seems to behave as if it is. After turning the engine off with the factory ECU - you can clearly hear the pump prime for about 3 seconds - it doesn't prime when turning the ignition on.

Triple checked all the wring - and did a continuity test from the adaptronic Aux 1 out to the pin on the ECU loom connector - all good.

Reflashed the firmware and saved / loaded the map again.

I have set the Green LED to the same function as the fuel pump - and I can see it working when the ignition is turned on - but the pump does not switch on. Tried the 'override' settings in the ECU data - and still nothing.

I think it would fire up except for the freakin fuel pump.

Where is the MA61 fuel pump relay located? I'll see if the wire from pin 14 is actually connected to it - although it must be as it works with the OEM ECU.

Stuffed Adaptronic perhaps? It was bought from the forums - supposedly never used.

EDIT:

Ok - took a lead straight out of Aux 1 on the Adap and plugged it into a relay to power the fuel pump. No go - it only reads 0.009v at the terminal. Plugging 12v straight into the fuel pump and it works. Relay is ok as I use it to power the electric antenna.

[JP]

when you have the ignition switched on, and you manually ground pin 14, does the pump run?

Edit: Just another thought, how are you running the Main EFI relay trigger? Have you put a jumper from ignition 12V to what would have been the MREL pin on the toyota ECU?

If that isn't done then the pump wont run

[RA35GT]

Are you its the fuel pump your hearing after turning the ignition off?

Its more likely the idle valve opening. Which the computer opens up fully ready for the next start.

Going by these diagrams the fuel pump is wired as below (mustard dots, as per attached diagram). http://homepage.mac.com/rib_feast/Ch...81_diagram.pdf



You need to connect the adaptronic fuel pump output to FC (green dots) this provides an earth to one side of the relay coil in the Circuit opening relay (COR). (Do not connect FPR).

The other side of the coil in the COR is triggered via EFI Main Relay (blue dots).

EFI Main relay is triggered by the ECU usually, if you dont have the factory ecu anymore than the M-REL line (magenta dots) needs to be connected to Ignition +12V for it to apply power to the COR (it also provides power to the O2 sensors and idle valve)

Make the changes on the patch loom itself so when you disconnect the patch loom the factory ecu can still be used.

[Gibbon]

when you have the ignition switched on, and you manually ground pin 14, does the pump run?

Edit: Just another thought, how are you running the Main EFI relay trigger? Have you put a jumper from ignition 12V to what would have been the MREL pin on the toyota ECU?

If that isn't done then the pump wont run

On the Ma61 pump - there are two pins that run it - connecting 12 volts and ground straight to it and the pump runs.

Connecting the adaptronic Aux 1 straight to the pump ( leaving earth there from before ) - and it doesn't run.

Connecting a relay, with the Aux1 from the adap as the swtich, and the pump doesn't run.

All these tests are ( I'm assuming ) bypassing the COR and EFI Relay.

[manny]

On the Ma61 pump - there are two pins that run it - connecting 12 volts and ground straight to it and the pump runs.

Connecting the adaptronic Aux 1 straight to the pump ( leaving earth there from before ) - and it doesn't run.

Connecting a relay, with the Aux1 from the adap as the swtich, and the pump doesn't run.

All these tests are ( I'm assuming ) bypassing the COR and EFI Relay.

You may have mixed up the switching polarity based on these comments - you need to supply power to the pump through an alternate source and the Aux 1 will supply the earth, ideally through a relay and not directly to the pump.