ECU confirmation

[monda2]

Hi All

I have used the search function, just after confirmation, I have purchased a wolf 3d v4 2nd hand never used and i am having wolf make a plug in adaptor harness for it but they require the yr and model honda in which my current standard ecu comes from to make the loom.

the sticker on the side of the ECU is 37820-P72-Q01 AP
810-100507

on 28 Pin Rom - 810-100507 2L08

the Honda part number is 37820
P72 is the model of car – integra??
Q01 is the revision of the ECU whatever that means, they supposedly confirm if its US – A, European – G, Japenese – J but what is Q??

So from what I have researched using http://www.phearable.net/tech/wiring/ecus.html it comes from a
94-95 integra gsr or possibly vtir??

When checking the Pinouts using http://www.phearable.net/tech/wiring/pinouts2.htm and http://www.phearable.net/tech/wiring/obd1.pin.schematics.gif

there are differences for eg. going by this the knock sensor should be D3 but D3 on my ecu is blank which means it could be a civic??, also some of the wires seem to change colour along the way through the loom – knock sensor on mine is pink/blue then changes to red??

I am very confused and frustrated as I need confirmation of the model to have this adapter harness made up, does it matter if the wires change colour regarding the fitment of an aftermarket ecu, or if I can 100% confirm (using the number on the ecu - 37820-P72-Q01) which model its from is this enough to have a harness made up?

Any help appreciated
Cheers

[jdm_b16a]

Australian delivered vehicles don't use the knock sensor. Only the JDM engines (where the fuel is more questionable) has a knock sensor.

All you need to know is that it is a P72 ECU. That's an OBD-I ECU.

Peter

[monda2]

Ok, I should have mentioned, sorry, the honda loom and ecu didnt come with my engine (b16a which def has a knock sensor) as the original was stuffed so bought this current loom and ecu (which going by what you have stated is probably an Aus ecu and loom as no knock sensor on ECU), the engine we think is a US version but not sure of ecu and loom.

But I am getting the knock sensor code (engine light) 23 flashing, so the ECU must recognise there is a problem with the knock sensor which may mean its a JDM ecu and loom?

Wolf require the yr and model to make the adapter harness which seems to be 94-95 intergra gsr going by the above websites, so I am assuming this is what I tell them?

[jdm_b16a]

Honda quite often use the same harness no matter what the model of the car is. The only differences (major ones) are between carby and EFI engines, and whether or not they have VTEC.

Peter

[monda2]

ok well mine is efi and vtec, so I will let wolf know its from 94-95 integra gsr, are they the same as a vtir?

[ECU-MAN]

Australian delivered vehicles don't use the knock sensor. Only the JDM engines (where the fuel is more questionable) has a knock sensor.

All you need to know is that it is a P72 ECU. That's an OBD-I ECU.

Peter


I would be very carefull making a statment like this. AUDM OBDI Cars do indeed come with Knock Sensor's

Sounds like your Integra is OBDI however post a photo of your ECU connectors to be 100% sure ( disconnected from the ECU ). P72 ECU's also come in the OBDIIa however your car has to be post 1996.

as mentioned above if you get your harness made for a GSR Integra it should be OK or VTiR AUDM Integra 1995 OBDI. Its better to have all the wires wireed through even if you dont need them or are not using them.

[jdm_b16a]

AUDM OBDI Cars do indeed come with Knock Sensor's

Are you referring to Hondas specifically (all models) or all cars generally. I suppose I should have qualified my statement but not all AUDM Hondas have KS. Early model Civics for example don't have a KS.

I was thinking back to what an importer of JDM engines told me about telling the difference between JDM engines and local ones - look for the KS or absence thereof.

Peter

[monda2]

Thanks for the info guys, ECU-MAN here are the photos you requested

http://i51.photobucket.com/albums/f386/benmin/ecu3.jpg

http://i51.photobucket.com/albums/f386/benmin/ecu2.jpg

http://i51.photobucket.com/albums/f386/benmin/ecu.jpg

Do these confirm its a OBD1 loom

By the way the engine is in a mini, not integra : ) this is half the problem as I bought the engine separately to the ecu and loom as the one with the engine was missing most of the loom, so required another.

Cheers

[jdm_b16a]

Do these confirm its a OBD1 loom

Yes the plugs are 26 / 16 / 22 which is OBD-I.

Peter

[ECU-MAN]

as above your ECU is OBDI

I was mainly referring to OBDI and OBDIIa/b Honda's. B, H sereis AUDM came with KS from the factory. the B16A2 CRX has the KS on the block, the engine witing is in place, and the ECU's do not support the KS.

[monda2]

Cheers, so regarding the pinouts for AUDM 95 integra vtir do they differ to the euro/US/ jap pinouts? as above I used the below (which differ slightly)

http://www.phearable.net/tech/wiring...schematics.gif
http://www.phearable.net/tech/wiring/pinouts2.htm

Its hard to know which are correct and which matches my ecu! Does anyone have any other pinouts that may match mine?
Cheers

[monda2]

Also, looks as though the part no. on the ecu 37820-P72-Q01
the Q is for Australia 0 - is for manual?

Could someone please confirm
Cheers

[mocchi]

Cheers, so regarding the pinouts for AUDM 95 integra vtir do they differ to the euro/US/ jap pinouts? as above I used the below (which differ slightly)

http://www.phearable.net/tech/wiring...schematics.gif
http://www.phearable.net/tech/wiring/pinouts2.htm

Its hard to know which are correct and which matches my ecu! Does anyone have any other pinouts that may match mine?
Cheers

If it any help, I tested KS, INJ 1-4, ALTC, O2 (4wires) & VTS pinout on a P08 OBD1 ecu. JDM VTi.
This matches with pinout diagram from US (ffs technet). I'm confident that USDM matches AUDM/JDM pinouts although they will have different wire color.