Installing an Apexi AVCR + ECU pinouts

[k20guy]

2007 civic si - After a few hours I installed a apexi boost controller!!

It was a pain in the butt looking for an ecu pinout but I got the job done!!!

Connector A
Pin 28 (RPM) Blue wire
Pin 29 (Speed) Blue wire

Connector C
Pin 20 (Throttle) Red/Black wire

It was a pain in the butt looking for an ecu pinout but I got the job done!!!

CLICK LINK for the FULL ECU Schematic
http://geocities.com/paulo421/fg2ECU.jpg

[k20guy]

[disboiflaco]

nice...so do you have a greddy turbo kit?

[udumkid]

Hmmm, why not just re-adjust the wastegate actuator rod to increase the psi on the turbo?

[GalaxyGreySi]

Originally Posted by udumkid

Hmmm, why not just re-adjust the wastegate actuator rod to increase the psi on the turbo?

I did that on my GReddy kit that I had on my Del Sol - the results were less than satisfactory. It would surge up to 14lbs, then settle back at 10, and max boost would fluctuate depending on temperature. I'd go with the AVC-R over adjusting the actuator anyday. Well, if I wasn't ballin' on a budget. I bought the Turbosmart Boost Tee

[GalaxyGreySi]

oh and +rep to K20Guy for wiring instructions!

[udumkid]

Originally Posted by GalaxyGreySi

I did that on my GReddy kit that I had on my Del Sol - the results were less than satisfactory. It would surge up to 14lbs, then settle back at 10, and max boost would fluctuate depending on temperature. I'd go with the AVC-R over adjusting the actuator anyday. Well, if I wasn't ballin' on a budget. I bought the Turbosmart Boost Tee

Seems like something was wrong with your wastegate for it to fluctuate like that. The rod lenght changes when you adjust the nuts,the longer the rod is the less boost you run,the shorter the rod the more boost you run. Is not like the rod change lenght when ever you went into boost for the boost to creep,the only way I see is if you left the nut loose,but who knows.Another way to turn up the boost is by adding welding tips to the inside of the vacumm hose that goes into the wastegate. But you are right,its better to go with a electric boost controller,except I would have gone with the hks evc4 over the AVC-R,the reason LESS WIRING!!!!!

[blueroadster]

+ rep...Thanks for posting. Here is some more to add regarding the stock wiring for the Si (Throttle signal is the only one of the three connections that does not eventually route into the cabin):

Engine Speed (Tach) Connection
ECM Connector A, Pin 28 (Outputs Engine Speed Pulse (NEP)) --> BLU Wire --> Connector D, Pin 3 (BLU (NEP)) on the EPS Control Unit (located inside the cabin behind the kick panel on the passenger's side)

Vehicle Speed Connection
ECM Connector A, Pin 29 (Sends vehicle speed sensor signal) --> BLU Wire --> Connector C201, Pin 4 (on the 2006 Si) or Connector C202, Pin 10 (on the 2 door 2007 Si) --> BLU Wire --> Connector G, Pin 5 on the Under-dash Junction Box (located inside the cabin under the dash on the driver's side)--> Out of the Under-dash Junction Box via a BLU Wire coming out from Connector E, Pin 2 and a BLU Wire coming out from Connector D, Pin 2

Throttle Position Sensor
Throttle Position Sensor/Throttle Actuator (on the throttle body), Pin 1 --> RED/BLK Wire --> ECM Connector C, Pin 20 (Sensor Input (TPSA): Detects Throttle Position Sensor A Signal)...ECM does not output.

Throttle Position Sensor/Throttle Actuator (on the throttle body), Pin 3 --> RED/BLU Wire --> ECM Connector C, Pin 21 (Sensor Input (TPSB): Detects Throttle Position Sensor B Signal)...ECM does not output.

TPSA measures ~3.9V with the throttle fully open and ~0.9V with the throttle fully closed

TPSB measures ~4.1V with the throttle fully open and ~1.7V with the throttle fully closed

[sparda]

Originally Posted by blueroadster

+ rep...Thanks for posting. Here is some more to add regarding the stock wiring for the Si (Throttle signal is the only one of the three connections that does not eventually route into the cabin):

Engine Speed (Tach) Connection
ECM Connector A, Pin 28 (Outputs Engine Speed Pulse (NEP)) --> BLU Wire --> Connector D, Pin 3 (BLU (NEP)) on the EPS Control Unit (located inside the cabin behind the kick panel on the passenger's side)

Vehicle Speed Connection
ECM Connector A, Pin 29 (Sends vehicle speed sensor signal) --> BLU Wire --> Connector C201, Pin 4 (on the 2006 Si) or Connector C202, Pin 10 (on the 2 door 2007 Si) --> BLU Wire --> Connector G, Pin 5 on the Under-dash Junction Box (located inside the cabin under the dash on the driver's side)--> Out of the Under-dash Junction Box via a BLU Wire coming out from Connector E, Pin 2 and a BLU Wire coming out from Connector D, Pin 2

Throttle Position Sensor
Throttle Position Sensor/Throttle Actuator (on the throttle body), Pin 1 --> RED/BLK Wire --> ECM Connector C, Pin 20 (Sensor Input (TPSA): Detects Throttle Position Sensor A Signal)...ECM does not output.

Throttle Position Sensor/Throttle Actuator (on the throttle body), Pin 3 --> RED/BLU Wire --> ECM Connector C, Pin 21 (Sensor Input (TPSB): Detects Throttle Position Sensor B Signal)...ECM does not output.

TPSA measures ~3.9V with the throttle fully open and ~0.9V with the throttle fully closed

TPSB measures ~4.1V with the throttle fully open and ~1.7V with the throttle fully closed

i have an R18
is it the same on my ECU ???
((ECM Connector A, Pin 28 (Outputs Engine Speed Pulse (NEP)) --> BLU Wire ))
i was planing to install a shift light ... can i use the same pin (A-28) ???

[JC8001]

Originally Posted by sparda

i have an R18
is it the same on my ECU ???
((ECM Connector A, Pin 28 (Outputs Engine Speed Pulse (NEP)) --> BLU Wire ))
i was planing to install a shift light ... can i use the same pin (A-28) ???

Hrrm.. yeah, so was the diagram the same pinout for the R18A1?

thanks.

[jsb03f]

yes, is that right?

[jsb03f]

yea, is that right?

[blueroadster]

For the various connections, I provided a trace from it's ECM connector and out to various other connectors on the car. If you are looking for the tach signal line, you can grab one from inside the passenger cabin. If you look behind the kick panel on the passenger side, you will see the EPS Control Unit as shown in the below PIC.



The grey connector in the center is what is called "Connector D." Pin number 3 on this connector (towards the right in the above PIC...two pins away on the same row where the white wire is located) has a solid blue wire running to it that needs to be tapped to get the tach signal.

[blueroadster]

Originally Posted by sparda

i have an R18
is it the same on my ECU ???
((ECM Connector A, Pin 28 (Outputs Engine Speed Pulse (NEP)) --> BLU Wire ))
i was planing to install a shift light ... can i use the same pin (A-28) ???

The ECM pinouts are not the same.

For the shift light, I'd suggest tapping the line mentioned in my previous post so that way you will not have to run any wires from the engine bay and into the passenger cabin.

[blueroadster]

Nevermind my previous post...If you have an R18, then you do not have an EPS Control Unit as shown in the PIC two posts up. With that being said, you'll need to trace the engine speed pulse (i.e., tach) wires yourself.

[RANGERSi07]

subscribed for future reference

[jameslewis178]

Originally Posted by blueroadster

+ rep...Thanks for posting. Here is some more to add regarding the stock wiring for the Si (Throttle signal is the only one of the three connections that does not eventually route into the cabin):

Engine Speed (Tach) Connection
ECM Connector A, Pin 28 (Outputs Engine Speed Pulse (NEP)) --> BLU Wire --> Connector D, Pin 3 (BLU (NEP)) on the EPS Control Unit (located inside the cabin behind the kick panel on the passenger's side)

Vehicle Speed Connection
ECM Connector A, Pin 29 (Sends vehicle speed sensor signal) --> BLU Wire --> Connector C201, Pin 4 (on the 2006 Si) or Connector C202, Pin 10 (on the 2 door 2007 Si) --> BLU Wire --> Connector G, Pin 5 on the Under-dash Junction Box (located inside the cabin under the dash on the driver's side)--> Out of the Under-dash Junction Box via a BLU Wire coming out from Connector E, Pin 2 and a BLU Wire coming out from Connector D, Pin 2

Throttle Position Sensor
Throttle Position Sensor/Throttle Actuator (on the throttle body), Pin 1 --> RED/BLK Wire --> ECM Connector C, Pin 20 (Sensor Input (TPSA): Detects Throttle Position Sensor A Signal)...ECM does not output.

Throttle Position Sensor/Throttle Actuator (on the throttle body), Pin 3 --> RED/BLU Wire --> ECM Connector C, Pin 21 (Sensor Input (TPSB): Detects Throttle Position Sensor B Signal)...ECM does not output.

TPSA measures ~3.9V with the throttle fully open and ~0.9V with the throttle fully closed

TPSB measures ~4.1V with the throttle fully open and ~1.7V with the throttle fully closed

ok so for nitrous do i hook the tps wire to pin 1 red/blk wire or pin3 red/blu wire???

[azulsi]

yo man props on finding this you just saved me some time cause my kit is almost done installing and I needed the pinouts for the turbo timer.

[NIGHTHAWKSI]

sorry to bump this old thread, but james lewis question was never answered...
i need the throttle position sensor signal. but it seems there are 2 wires. which one do i want?
1. ECM connector C, pin 20?
2. ECM connector C, pin 21?

thank you in advance and +rep to whoever gives me a credible answer first...

[blueroadster]

Originally Posted by NIGHTHAWKSI

sorry to bump this old thread, but james lewis question was never answered...
i need the throttle position sensor signal. but it seems there are 2 wires. which one do i want?
1. ECM connector C, pin 20?
2. ECM connector C, pin 21?

thank you in advance and +rep to whoever gives me a credible answer first...

TPSA, pin 20, RED/BLK wire.