caldina 3sgte ecu help.

[frost]

i cant figure out if i have a auto or manual Caldina 3sgte engine ECU.
does anyone know how i find out.
i've been searching all night with no luck.
seems like no one mods caldina's or at least never use stock ecu's when doing a engine swap.

the sticker on the ecu lid is different to other toyota ecu's i have seen.
it only says
DENSO 9717530-080-6
12v made in japan.

maybe someone with access to Toyota EPC can help me run those numbers and see what comes up.
i hope its manual so i can use it.

[strx7]

that number isn't going to work in the epc. the toyota part number for an engine ecu stars with 89661

[frost]

yeah i was thinking the same. hoping there was a slight chance of cross referencing denso part numbers or something.

[strx7]

I have one here from a ST215 GTT auto
it is 89661-20751
denso number of 17500-3910

[frost]

i opened the ecu to find another 175331-1500 on board.
looks like trial and error to see if it works. (pun intended)

thanks strx7 for your input.

[fivebob]

If you can wait till tomorrow I'll check my Manual & Auto ECUs to see if there's any difference.

[frost]

yeah i have plenty of time. still have to get the rwd exhaust manifold made.

cheers fivebob. also your ecu pinouts/wiring diagram is very handy. your the only person on the internet who has one. wtf translated from Russian?

[strx7]

I have one here from a ST215 GTT auto
it is 89661-20751
denso number of 17500-3910

Actually forget those numbers, I just found my GTT auto ECU here at work its numbers are 89661-21330 denso number 175300-0801

[frost]

I have one here from a ST215 GTT auto
it is 89661-20751
denso number of 17500-3910

Actually forget those numbers, I just found my GTT auto ECU here at work its numbers are 89661-21330 denso number 175300-0801

that denso number matches a few auto ecu's i have found on the net.
maybe ending in 0801 is auto and 0806 is manual. hoping

[fivebob]

Hmm, this is rather strange. My manual ECU is Denso# 175300 791 the number on the circuit board is 175231 1160.

I haven't found the Auto ECU yet to compare it with, but I'm wondering if your ECU is for a 3S-GTE, or some other motor

[lucasthefallen]

most auto toyota ecu's have " A/T " written on the sticker.
either way theres no difference i think between the 2 ecu's as far as engine management goes.

[fivebob]

either way theres no difference i think between the 2 ecu's as far as engine management goes.

In this case, and most others, there is a difference in the fault codes that the ECU will generate, and potentially go into limp mode because of. Also most Auto ECUs are tuned for different torque curves.

[lucasthefallen]

either way theres no difference i think between the 2 ecu's as far as engine management goes.

In this case, and most others, there is a difference in the fault codes that the ECU will generate, and potentially go into limp mode because of. Also most Auto ECUs are tuned for different torque curves.

oh. i've tested 3sge beams ecu's ( redtop ) auto and manual, no difference at all ( tested on teh dyno, in a sw20 )

also from memory arent aw11 4agze MT fitted with AT ecu's from factory?

[frost]

Hmm, this is rather strange. My manual ECU is Denso# 175300 791 the number on the circuit board is 175231 1160.

I haven't found the Auto ECU yet to compare it with, but I'm wondering if your ECU is for a 3S-GTE, or some other motor

yeah i found another number like that on the board too.
strange, well it does plug into the two loom plugs i got with the engine, A,31 and B,24 pin. and going from your ecu pinouts outs, those two plugs are correct. though i dont have plug C,28 and D,22 to complete it.

should i take a picture of the board for you to look at?

another thing i need to know... i took the sump off last night, im wanting to use a 2S sump and pick up. now the problem is the front cover oil filter feed/return cant be used. the plan is to use a oil filter relocation kit from the side of the block where the cooler is and plug up the feed/return on the front cover. is that ok?

OR should i loop them together(i thnk i can do this)

now when i think about it i dont think i can just block them off,

[strx7]

1 if for the pick up, one is for the pressure relief valve, you're going to need to FUNKY plumbing to get rid of the alloy piece of the sump

[frost]

oh is there more to the alloy sump then just two holes feeding the oil filter? i'll have to investigate later.

the oil pickup is top center of picture.
the oil filter feed and return is side by side at corner of block.
i was thinking of just looping the two holes that feed the filter and run remote filter off the side of engine like gen2 style.

[fivebob]

How many wires are there on the "A" connector block?

[frost]

How many wires are there on the "A" connector block?

31 pins on ecu A.

[fivebob]

How many wires are there on the "A" connector block?

31 pins on ecu A.

Yes I know there are 31 pins on that connector, but how many wires are attached to those pins on the ECU plug?

If the wiring loom and ECU came from the same source then that will tell you if it's auto or manual

[strx7]

oh is there more to the alloy sump then just two holes feeding the oil filter? i'll have to investigate later.

the oil pickup is top center of picture.
the oil filter feed and return is side by side at corner of block.
i was thinking of just looping the two holes that feed the filter and run remote filter off the side of engine like gen2 style.

Those 2 holes, one goes down to the oil filter, one comes back up, BUT the oil pressure relief valve is also in that piece of sump, not exactly sure how the plumbing goes but you need an external pressure regulator if you're using a 2S sump on it