Need!!! How to wiring OBD2 DLC port with ECU
06-06-2013, 10:13 PM
#1
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Need!!! How to wiring OBD2 DLC port with ECU
My car is Accord Gen 5. I've swapped my car engine from F22B to H23A DOHC Vtec Tiptronic, and system was changed from OBD1 to OBD2 also (my ECU is PCF). Now I need to wiring a new OBD2 DLC port for my car. Can anyone suggest me how to wire OBD2 16 pin from ECU?
06-07-2013, 06:15 AM
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06-08-2013, 12:49 AM
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Re: Need!!! How to wiring OBD2 DLC port with ECU
You plug your existing harness into it and then plug the other side of the conversion harness into the ecu. Very simple. You just need to know if you need an obd2a or obd2b conversion harness. Go to hondata website look at their ecus to tell what your car and ecu is to figure out what you need. Then just contact an ebay seller or even people in the marketplace at this website.
06-08-2013, 06:51 AM
#5
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Re: Need!!! How to wiring OBD2 DLC port with ECU
Are the above pictures of your swap? If they are, that looks as though you already have the complete OBD2 wiring harness swapped in...therefore there is no need for a conversion harness.
If all you are looking for is the OBD diagnostic/data port wiring you do not need any conversion harness.
Are you looking for the wiring for the 16 pin OBD data link connector that is usually found behind the ashtray of the OBD2 96-97 Accords? IIRC you only need to hook up 4 wires. Give me a minute and I will find you the wire diagram for that connector.
If all you are looking for is the OBD diagnostic/data port wiring you do not need any conversion harness.
Are you looking for the wiring for the 16 pin OBD data link connector that is usually found behind the ashtray of the OBD2 96-97 Accords? IIRC you only need to hook up 4 wires. Give me a minute and I will find you the wire diagram for that connector.
06-08-2013, 07:02 AM
#6
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Re: Need!!! How to wiring OBD2 DLC port with ECU
OBD2 16 pin Data link connector
1 -
2 -
3 -
4 -
5 -
6 - LT GRN/RED wire - from SRS unit pin 15 (if you do not have the SRS unit don't bother with this hookup)
7 -
8 - RED/WHT wire - from Under hood fuse/relay box Radio fuse 36 15A (pin 15 connector C253)
9 -
10 -
11 -
12 - BLK wire - to chassis ground (G202 Left side of center console if you can find it)
13 - BRN/BLK wire - ground G114 (Left rear of engine)
14 -
15 - LT GRN wire - to ECU Pin C8 (K-Line)
16 -
1 -
2 -
3 -
4 -
5 -
6 - LT GRN/RED wire - from SRS unit pin 15 (if you do not have the SRS unit don't bother with this hookup)
7 -
8 - RED/WHT wire - from Under hood fuse/relay box Radio fuse 36 15A (pin 15 connector C253)
9 -
10 -
11 -
12 - BLK wire - to chassis ground (G202 Left side of center console if you can find it)
13 - BRN/BLK wire - ground G114 (Left rear of engine)
14 -
15 - LT GRN wire - to ECU Pin C8 (K-Line)
16 -
06-08-2013, 08:07 PM
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Re: Need!!! How to wiring OBD2 DLC port with ECU
not meaning to thread jack but i too need help in the same way. right now i have a 92 integra ls with the stock b18a1 motor. i pulled it earlier this morning because i bought a complete jdm b16a swap for cheap. the wiring harness for the b16 is kinda messed up and alot of wires are cut. could i use my obd1 harness from my b18 for my b16a. if so how would vtec work and will all the connections be the same since they are both obd1? please help asap
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