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Hacking up Honda's ECU
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PostPosted: Wed Sep 06, 2023 4:02 pm 
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Joined: Wed Sep 06, 2023 3:53 pm
Posts: 2
Hello,

I have a D16Z6 CRX Del Sol with a P28-G01 ECU that doesn't work anymore (no fuel prime, no 5V on sensors).

Can I replace it with a P28-G00 from a Civic EG5 (D16Z6 too).

I know the G01 and G03 aren't compatible but what about the G00 ?

Regards


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PostPosted: Fri Sep 15, 2023 2:02 pm 
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Joined: Fri Aug 20, 2004 6:33 pm
Posts: 2270
Location: chicago burbs
phoenix37 wrote:
Hello,

I have a D16Z6 CRX Del Sol with a P28-G01 ECU that doesn't work anymore (no fuel prime, no 5V on sensors).

Can I replace it with a P28-G00 from a Civic EG5 (D16Z6 too).

I know the G01 and G03 aren't compatible but what about the G00 ?

Regards

G = EU based market
0 = manual trans
0,1,3 = revision to ECU hardware/MCU

why do you think that the G01 and G03 are not compatible? Was there an OBD1 to OBD2 change with that version?
Basically if it's the same numbers (37820-P28-G0_) and the plugs are the same, it should work almost identically.

NOTE: there are plenty of other markets ECUs that are out there that may work also. So do not get bogged down with the G portion of the number. Unless you have something like no O2 sensor or something else special about it.


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PostPosted: Sat Sep 16, 2023 4:28 am 
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Joined: Wed Sep 06, 2023 3:53 pm
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Here is attached the differences between a G01 and a G03. As you can see you can't plug a G01 harness on a G03 ECU and vice-versa.

On the G03 they have grouped together all the pins for the automatic transmission which is the blank part here because it is a manual ECU.


You do not have the required permissions to view the files attached to this post.


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PostPosted: Tue Sep 19, 2023 2:45 pm 
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Joined: Fri Aug 20, 2004 6:33 pm
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Location: chicago burbs
the bottom one is OBD1, the top one if OBD2.

OBD1
Image


OBD2a
Image


OBD2B
Image


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