mekal

Hey google almost got my answer for me but not all the way.

Heres the problem

obd0 to obd1 conversion 2gen jdm b16a on a chiped p28 stock base map and stock setup.

Ive got fuel coming out of the injectors during the "on key position" and during cranking.
Ive got a strong spark coming out of each plug wire. spark plugs are good
Ive got Compression as the engine ran beautiful on the pr3 and obd0 equipment

P28 CEL goes of with fuel pump and comes back on solid after about 4 seconds or so with and with out j1 cut.
Ive tested with a P06 ecu completely virgin to see if it would start my car, and the cel stays solid the whole time, and no start.

I dont know how many times ive checked my distributor wiring lol.. 10+ times with 3 or 4 different sources to make sure each one was correct.

ckp+ to b15
ckp- to b16
cyp+ to b11
cyp- to b12
tdc+ to b13
tdc- to b14
icm to a21
vss to b10

Im getting bat. voltage at the ignition input lead to distributor
Im only getting 6.2 volts at pin a21(ICM) going into the ecu? I read its supposed to be around 10v? can someone verify this?

Heres what my grounds are doing (testing with multi meter at the ecu input clips)

IGP1(a25) Ignition on reads bat. voltage/ Ignition off nothing
IGP2(b1) Same as IGP
PG1(a23) Ignition off is grounded(continuity)/ Ignition on reads mili volts (less than 1v)
PG2(a24) same as PG1
LG1(a26) Grounded with and without ignition on
LG2(b02) same as LG1

Will a p06 start my car? Ive read that it will in limp mode? Still why is the a Solid ECU. I have a gut feeling its either an ecu problem, one of my grounds isnt doing something right, or maybe the ignition input at a21 being only at 6.2 volts?

Any help from knowledgeable people would be great.
Thanks Michael

civickiller

whats the code its throwing ?

mekal

with the p28 cel comes on with the pump and then goes off with the pump, then comes back on solid after about 4 seconds or so and thats it. thats with the scs to ground.

with the p06 its stays solid once the key is turned to the on position

2k.civic.si

what happens with j1 cut?

mekal

with j1 cut it has the same exact symptoms.... I put a virgin p06 in and it has a solid cel too? with the p06 the cel stays on while in the on position. With the p28 the cel goes off with the fuel pump but then comes back on like 5 seconds later without cranking? Whats up with the ICM voltage? anyone have experience with that?

mekal

alright so after cleaning the grounds, which i think were fine in the first place, and hooking up the o2 sensor. I get this now.

P28 No cel during the fuel pump priming phase. After pump goes off it throws a code 20 and 22
P06 Cel flashes during fuel pump priming phase. Then throws a code 19 and code 20

If im getting spark at the spark plugs(Im getting strong spark), then wouldnt that mean that the distributor is working? I mean are there any components that would fail in the distributor that would still allow it to create spark, but be off on timing or allow it not to start? Here are the colors of my distributor wires coming out of the distributor and where I have them hooked up to the ecu.

ICM yellow/green a21
ckp+ blue/green b15
ckp- blue/yellow b16
cyp+ orange b11
cyp- white b12
tdc+ orange/blue b13
tdc- white/blue b14

Ive had it a couple of times where ive tried to start the car and hear the main relay clicking, and something up in the engine bay clicking? I allowed this to happen only a short amount of time because I know there not supposed to do that lol, but would that fry something in the ecu? Ive inspected both ecus and cant find any burn marks or bridged soldering? Im pretty new with the workings inside the ecu, Ive been reading a lot though. Eventually after I figure this problem out, im going to get into the tuning scene. Step one is getting the car to run on obd1 first lol... Im big on the troubleshooting method, instead of the shot-gun method(throw parts and money at the car with out good reason). So I want to figure the problem out with out spending a bunch of money. Plus I dont have money to spend lol.

2k.civic.si

1 O2A - Oxygen sensor #1
2 O2B - Oxygen sensor #2
3 MAP - manifold absolute pressure sensor
4 CKP - crank position sensor
5 MAP - manifold absolute pressure sensor
6 ECT - water temperature sensor
7 TPS - throttle position sensor
8 TDC - top dead centre sensor
9 CYP - cylinder sensor
10 IAT - intake air temperature sensor
12 EGR - exhaust gas recirculation lift valve
13 BARO - atmospheric pressure sensor
14 IAC (EACV) - idle air control valve
15 Ignition output signal
16 Fuel injectors
17 VSS - speed sensor
19 Automatic transmission lockup control valve
20 Electrical load detector
21 VTEC spool solenoid valve
22 VTEC pressure valve
23 Knock sensor
30 Automatic transmission A signal
31 Automatic transmission B signal
36 traction control found on JDM ecu's
41 Primary oxygen sensor heater
43 Fuel supply system
45 Fuel system too rich or lean
48 LAF - lean air fuel sensor
54 CKF - crank fluctuation sensor
58 TDC sensor #2
61 Primary oxygen sensor
63 Secondary oxygen sensor
65 Secondary oxygen sensor heater
71 random misfire cylinder 1
72 random misfire cylinder 2
73 random misfire cylinder 3
74 random misfire cylinder 4

your p06 must be an automatic ecu....your p28 you only need to worry about code 22 or disable it.
Im guessing if you got spark your not getting fuel

mekal

ya i figured the p06 was auto after throwing that code... Ill go over my fuel setup. I tested for voltage at the injector clips and got like 11.8v on all of them with the key in the on position. Each injector is with in spec. for ohms. I even took off the fuel rail zip tied the injectors in place and put bags over the nozzles and tested for fuel. I dont know how much stock b series (240cc or 230cc I cant remember) are supposed to flow, but I do get what looks like even amounts of fuel in each back when starting/cranking? I need to find someone with a obd1 honda and test these ecus out... Anyone live in central or north eastern iowa that wants to help me out? lol

Also who do you guys recomend for obd0 to obd1 ecu harnesses? I was going to make my own, but im going to spend the money this time and get this running for sure first.