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Old 07-13-2009, 11:32 AM   #51
scoobystas
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alright i'm going back to square one. I ordered new wires. A singal wire with four conductors (different colors), shielded with a drain wire so that it's easier to shield to the ecu.

Also, instead of jumping pins around, i'm going to just run four wires from the black connector behind the battery to the ecu. Hopefully this will eliminate some troubleshooting for me.
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Old 07-14-2009, 09:09 AM   #52
Zephyr
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So at this point it seems like you would have been better off dropping the $200 bucks on the IA kit and calling it a day. Four conductor shielded wire, factory pins and a good diagram would have had you up and running two months ago.
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Old 07-14-2009, 10:32 AM   #53
scoobystas
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yeah zephyr, thats sounds about right. I actually think i solved the problem. I indeed had an open circuit. One of the male connectors from the engine light gray connector was not pinned into anything on the female side, chassis light gray connector. This was my mistake. The diagram I drew on previous page is therefore wrong. I had added a wire to pin 7 instead of 5.

I moved wire because i saw the open circuit, check engine light is off. Will do some logging on the avcs and report. However, from my initial logs this morning, i'm not getting too much activity
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Old 07-14-2009, 10:34 AM   #54
scoobystas
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hahaha but on a side note, if everything is working as it should....i've got enough 4 conductor shielded wire coming in to start making at least a few of these harness kits, lol.
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Old 07-16-2009, 10:10 PM   #55
scoobystas
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FINAL UPDATE.....MY AVCS WORKS!!

After starring at the wiring diagrams i realize that the chassis side light grey connector is not E1, its B20. THe engine side of the light grey connector is E1 and that is the side that you start with when you count pins. I was counting the female side, B20 pins, and kept wiring it wrong.
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Old 07-17-2009, 11:17 PM   #56
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Glad you got it working!!! Let us know how much of a difference it makes!
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Old 07-20-2009, 08:03 AM   #57
scoobystas
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the avcs is nice, car feels like stage 2 wrx, but with the larger vf37. Once i get the clark e-tune, I bet it will really open up the powerband.
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Old 08-12-2009, 03:12 PM   #58
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Has anyone used ver8 JDM engine harness and wired the AVCS from there? Simple plug and play?

EDIT:

04 JDM Ver8 does plug in, contains the AVCS wires. its definatly a go.

Last edited by ej20ajk; 08-17-2009 at 02:49 PM.
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Old 08-18-2009, 04:37 PM   #59
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Getting a code p0365 Bank1 sensor b - trippled checked the wiring, all seemed right. Any other insight?
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Old 08-19-2009, 07:21 AM   #60
scoobystas
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do you have all four wires within one shielding sheath or is each wire individually shielded?

If you use 4 individual wires with shields than you don't need to ground them to the ecu. I did and i was having problems, intermittent cels. If your using a single wire with 4 conductors, all of which are wrapped in a single shield, than you do need to have a 5th wire that ties into the single shield and grounds all four wires ecu, into pin#14, and thus grounding the E1 connector.

The "light gray connector" at the pass side strut tower has a male and female side. The male side called E1 is carrying the signal from the avcs solenoids, plugs into the female side called B20, which than transfers the signal to the ecu for interpretation.

You use E1 as the reference for counting pins. If you face the E1 connector towards you with the male pins facing you, the upper row contains 4 pins with the upper left hand pin counted as #1. This corresponds to the upper right hand pin being #1 on the B20 (female) side.

Last edited by scoobystas; 08-19-2009 at 07:33 AM.
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Old 08-21-2009, 04:37 PM   #61
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Quote:
Originally Posted by scoobystas View Post
do you have all four wires within one shielding sheath or is each wire individually shielded?
I separted the pins/harness from the JDM bulk harness so it is shielded and grounded into the ECU. Will swap the sensors around to see if it makes the difference. Otherwise will have to order one from japanparts.com (only $75) which aint too bad.
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Old 11-08-2015, 11:54 PM   #62
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I'm going through all this now and could use a little help. Ok I'm using 4 wires in one sheild. So that grounds to 14. And I use my tgv wires for the avcs solenoids. So do I just cut them off and put my avcs plugs on the wires? Then how to I tell + from -. Lastly the ds1 has me a bit confused with "avcs" sensors. Are these my other 2 cam sensors?
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Old 11-09-2015, 10:06 AM   #63
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Four conductor shielded wire is what you want (four wires inside of a shielding jacket). The shield needs to be grounded to Pin 14 at the ECU as stated above. The four wires that currently control the TGV need to be shifted in the black plug behind the batter. They need to be shifted at the ECU. You'll need to add the four shielded wires plus the ground at the ECU and four wires at B20, the gray plug on the RIGHT side of the engine. Yes, the "AVCS" sensors and cam sensors are the same item, not to be confused with the cam position sensor that works in conjunction with the crank position sensor.

It is important to note that the AVCS cam position sensors are sensitive to polarity. If the pins are flipped, the AVCS will not work.
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Old 11-09-2015, 07:50 PM   #64
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Ok I get all that. The 4 wires I'm adding are for my rear cam sensors right? So now how do I tell polarity? Can this be done with ohms testing or no?
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Old 11-09-2015, 09:08 PM   #65
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So I just un rattled the cut jdm harnes I have for the rear cam wires. It seems like they are sheilded. The sheild doent ground to anything does it? I have extra sheild wire I can repair this with. Or I hear foil works also.
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Old 11-11-2015, 02:41 AM   #66
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So I made my harness for my rear cam sensors out of extra sheild wire today. I'm going to ground the sheild to the body I'm thinking
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Old 11-12-2015, 10:06 AM   #67
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The shield needs to go to the ECU not to the body. Why are you connecting them directly at the cams as opposed to the plug on the right side of the engine? If your AVCS isn't working you'll know why. Just look at the diagram and you'll see that on the engine harness there are specific colors for the four wires for the AVCS cam sensors. These need to go to specific pins at the ECU, as per the wiring diagram.
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Old 11-12-2015, 11:05 AM   #68
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Quote:
Originally Posted by Zephyr View Post
The shield needs to go to the ECU not to the body. Why are you connecting them directly at the cams as opposed to the plug on the right side of the engine? If your AVCS isn't working you'll know why. Just look at the diagram and you'll see that on the engine harness there are specific colors for the four wires for the AVCS cam sensors. These need to go to specific pins at the ECU, as per the wiring diagram.
I know about the 4 wires for avcs that goes from the ecu to the engine plug. And yes that sheild does ground to the ecu. The cam wiring I'm talking about is running from the cam sensors it selfs to the grey plug on the strut tower to the wire that comes from the ecu. I didn't have a complete jdm engine harness. So I have to add to mine. Basically making my own ia performance wiring. I couldn't find a diagram for this so I looked at a few pages and from what I can tell the cam wiring on the engine itself, the sheild seems to be grounded to the body.

Last edited by Slidewayzb; 11-12-2015 at 12:14 PM.
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Old 11-13-2015, 11:12 PM   #69
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Hey guys I really need help with the +\- thing for my avcs connectors and for my avcs sensors. How do I tell the difference? I have the car torn down ready to hook all this up but I don't wanna do it wrong! Help!
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Old 05-27-2018, 03:57 PM   #70
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Sorry to revive an old thread. I’m getting ready to wire my avcs and understand which plugs I need to look at when counting the wires. However, when you count them, are you looking at male pins and counting left to right? For instance, E1 is the male side, B20 is the female side. If I’m counting left to right looking at the male pins that would correlate to looking at the wires on the female side and counting left to right? If this is correct, does that translate to all the connectors?
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