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cuttz

loading a start file for my 1uz cressida

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first off hi Rossco here.

I have building my 1uz-fe cressida for years now and its finally ready to install a start file into the ecu...... yay for me

i noticed there is a 1uzfe vvti start file in the pclink software

i dont have a vvti model but assume the fuel maps would be the same?

its a 1991 1uzfe, AFM has been replaced with a 4 bar map sensor, injectors have been upgraded to 7mge items. ethanol sensor and dual innovate wide-bands installed also and dizzys replaced with a COP setup. also added a IAT sensor and Water temp sensor 

im no tuner but fairly savvy on PC so want to load a run file myself and after looking through the base map i see that it has direct spark selected and injection is also sequential witch is how its been wired up (professionally wired RIP my bank acc) 

i changed the closed loop lambda to auto wide-band and turned off the vvti function. selected the 4 bar MAP and saved the file to a usb stick.

am i able to load that file and safely start the car? i will get it tuned just need it to run been to long to not here it since its here in my garage.

any help would be great and before you ask no its not boosted as of yet just a standard engine with this ECU and wiring setup running a r154 manual gearbox.

look forward to a replay regards Rossco

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ok i unlocked my ecu that was all good. after reading i went to do the firmware update also. ecu was connected and everything looked good. a message popped up to cycle power and i did then it said an error accrued. and now the ecu is in boot mode and i can not connect to the ecu, how can i fix the firmware if i can not connect to the ecu.

just want to load my start file and this happened 

 

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The ECU will usually only get stuck in boot mode if there is a wiring problem that is preventing the ECU from fully shutting down during the "power cycle" step.  So to make sure it is getting completely powered down either unplug the main ecu connector or disconnect battery.  Re-connect then do the firmware update again, this time when it gets to the power cycle step, disconnect ecu/battery again for a few seconds before reconnecting then click ok to continue.

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IT was online before i did the update and the wiring is all done professionally even have a list of what goes where so dont think its a wiring problem . how can i do a update when 1 it says it has the latest firmware and 2 i cant find the ecu. it wont connect

i did disconnect the battery to see if that fixes it but to no avail. and downloaded a second pclink in a different spot on the laptop but i dont want to wipe the whole pc link incase i loose my backup file. witch at this stage still can not use

thanks for the reply

.

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Unplug the ecu, leave it off for a few minutes.  Then power up again and try to run the Firmware update again (pc link doesn’t need to connect). You can just install the same firmware again.

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yes it gave me a reinstall option and seems to have worked. i should be ok to load this base now yeah?

thanks for your help so far

i stored the base map into the ecu also ill have a chat to a tuner and see if its ok to go for a start. i would like to disable the fuel so the engine primes and the timing is correct first before i go for a start tho

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Note the non-vvt engine has a different trigger pattern so just in case you didnt know that there is some basic set up info in the help file.  You can ignore the "twin distributor" setting.

cskjYD5.png

 

4 hours ago, cuttz said:

i would like to disable the fuel so the engine primes and the timing is correct first before i go for a start tho

You can do that by setting injection mode to "off".

Once you have checked the base timing, here is the basic start up procedure:

eTWj7gp.png

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awesome info thank you. ill update that to the base map and do another store to the ecu.

just to confirm i am right in selecting the 4 bar map sensor before it has been configured?

 

ive manually set the triggers to what you have shown me but the calibrate will not let me change the trigger offset to 4. its locked in at 234. is this something i must change also?

ecu calibrate.PNG

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19 minutes ago, cuttz said:

just to confirm i am right in selecting the 4 bar map sensor before it has been configured?

Im not sure what you are asking here, but yes, all sensors must be correctly calibrated before starting.

 

19 minutes ago, cuttz said:

ive manually set the triggers to what you have shown me but the calibrate will not let me change the trigger offset to 4. its locked in at 234. is this something i must change also?

Click on that "set base timing" spanner, you can only enter the offset in that screen.  Make sure you hit enter after typing it in so the box turns blue.

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in regards to the map sensor was just confirming that it will start with out a AFM since it no longer has one so long as i have it configured witch i just did then.

ill click that spanner and change the 234 to 4 now thanks for the help 

ok the 234 has been changed to 4. i tried that before but i must have clicked done without hitting enter so thanks.

anything else i need to change before trying to start?

i have also stored to the ecu 

 

my TPS is only reaching 84% how do i calibrate that

dont worry about the TPS that is now at 100%

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37 minutes ago, cuttz said:

in regards to the map sensor was just confirming that it will start with out a AFM since it no longer has one so long as i have it configured witch i just did then.

ill click that spanner and change the 234 to 4 now thanks for the help 

ok the 234 has been changed to 4. i tried that before but i must have clicked done without hitting enter so thanks.

anything else i need to change before trying to start?

i have also stored to the ecu 

 

my TPS is only reaching 84% how do i calibrate that

dont worry about the TPS that is now at 100%

There’s a realy good topic in the help file on what to check before first attempt to start ;)

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yes i have read that hence why i was going through all the map and tps calibrations. i was more thinking of anything else he may have thought like when he found the different trigger types as he mentioned above.

other than that i was ready to try and turn it over for the first time but seems the battery is a bit flat after today so it didn't even want to give me the satisfaction of turning over let alone starting. 

thanks for the help tho

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so the ecu has 3 fault codes ill post them if someone knows what they are would be sweet

ecu faults.PNG

ive found where they live in the ecu. if i change the error low from 0.05 volts to 0 will this clear the codes?

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You have AN Volt 4,5 & 6 set up as generic 0-5V channels and they are presently all measuring below what you have set up as the error low voltage.  If they are not connected to anything then turn them off.  If they are connected to something then set their error conditions up to something more suitable.

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done thanks.

seems like im having starter motor issues now so ill have to suss that out before i go any further 

thanks so much for your help

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So I went through all the paperwork that the auto elec wired everything to and made sure all the auxiliary and ai ao and di where in the right spot. I was missing a few things. I set them all up. One was the ecu power. Now when I turn the key off the ecu relay ticks constantly. How do I fix that. I tried messing with the ecu power on time but did nothing. Any ideas.

here is the file for the base tune ive been setting up if that helps

LEXUS V8 cressida inputs adjusted.pclr

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You will need to make sure that the relay (ecu controlled) only has power to the other side of the coil when the key is on.

If you have a look at ECU back feeding in the help file it covers what is happening.

Navigation:  G4+ ECU Tuning Functions > Auxiliary Outputs > Wiring Auxiliary Outputs

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Ok sweet I'll give that a try thanks.

Replacing the starter motor this week as Murphys law showed up and yeah it's stuffed. I'll fix that while I'm at it

Cheers

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So have a update. After a few months of dramas I've installed a new starter motor and the ecu power on relay is fixed.

So after playing around with the file posted above. Went for a start and it no joy. Close but no joy. It may be the trigger for the crank sensor. As I didn't see any action for the voltage in file. Is there any chance to get some help setting the trigger up. File is basically the same as the one I posted above. 

Thanks in advance

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You trigger setup in the earlier file looks reasonable, what makes you thank you have a trigger problem?  Are you getting RPM displayed when cranking?  Are you getting spark etc?  Have you checked base timing?

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Well has a rpm reading on the laptop when we go to crank. Haven't undone the coil packs yet as I feel it is getting spark as it feels like it wants to fire if that makes sense.

Only reason I feel it's the trigger as the voltage didn't change or go green like all the other di do ai ao etc.

I don't have my laptop on me atm other wise I would screen shot it.

Haven't checked timing tho as tbh I'm not sure how to do that with this setup

We have deleted the Dizzy's for the coil on plug so can't just put a timing light on it anymore

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