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MASTER TECH, Honda Service Technician
Category: Honda
Satisfied Customers: 5735
Experience:  28 years of Honda training and a master Honda tech
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Civic P28 pin out diagram VTEC 92-95

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civic P28 pin out diagram VTEC '92-'95

hello welcome to the site.

what wiring are you looking for ?


Customer: replied 7 years ago.
looking for wiring diagram for honda civic EPU P28, specificly vtec
ok please give me year on these and i can post the etm pin outs

the p28 is obd 1 correct ?


Customer: replied 7 years ago.
92-95 ECU (not ETM)

Yes obd 1 is correct

ok give me some time while i load the info. you just need the pin locations.

your putting a b series motor in correct ?

Customer: replied 7 years ago.
I'm not sure, my grandson is swapping motors, I'll try and call him and get back to you
Customer: replied 7 years ago.
Yes it is a 95 b series

sorry for not asking all this at once.

what harness are you using stock b series engine harness ?

you need knock and vtec .


Customer: replied 7 years ago.
95 b series single cam motor, hatchback, need signal to vtec if that makes sense

ok a B series motor is a duel over head cam motor the D series is a single.

so your upgrading from a none vtec to a vtec motor. yes ?

Customer: replied 7 years ago.
the motor is a D15B, so I'm assuming yes

also the # XXXXX ecu is APR0692

ok you will need to run 2 wires from the vtec switch and the pressure solenoid .

the blk/blu wire will run to the pcm connector c406 and put in terminal D6 and the single pressure solenoid wire will run to c404 pin A4


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