FIC Wiring Help - Toyota Yaris Forums

Focus_Sh1ft · 08-11-2010, 06:59 PM

Today I went to go wire my FIC up, but got kinda confused... This ECM pinout I'm using has got me all sort of confuzzled. Check it out here:
http://www.powerenterpriseusa.net/pr...risControl.pdf

Firstly, everything has two different wires listed and I have no idea what the acronyms stand for. So basically, I have no clue which wires I should be using to tap/intercept. It looks like some things are listed as + and -, while others aren't. Here's what I think needs to be done...

FIC Power - A21-1 or A21-2
FIC Gnd - C20-104
Injector 1 - C20-108
Injector 2 - C20-107
Injector 3 - C20-106
Injector 4 - C20-105
MAF+ - C20-118
MAF- - C20-116

CTScott · 08-11-2010, 10:15 PM

Conn A21.jpg
Conn C20.jpg

Connectors A21 and C20 are the two ECM connectors. The drawings above are looking into the connectors with them removed from the ECM.

What's listed is Function, Connector-Pin
The MAF also has polarity listed +/-

FIC Power - A21-1 or A21-2
FIC Gnd - C20-104
Injector 1 - C20-108
Injector 2 - C20-107
Injector 3 - C20-106
Injector 4 - C20-105
MAF+ - C20-118
MAF- - C20-116

Focus_Sh1ft · 08-11-2010, 11:12 PM

This is what I figured. So I was actually correct??

Two things I don't understand then. What's the difference between +B and +B2 on the power source? And is E01 (C20-45) (injectors) kind of like the ground for all four injectors?

CTScott · 08-12-2010, 10:26 AM

There's no difference between +B and +B2 (the two pins are connected together inside the ECM). E01 is the common for the injectors.

08-11-2010, 06:59 PM	#1
Focus_Sh1ft Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010 Location: New Jersey Posts: 875	FIC Wiring Help Today I went to go wire my FIC up, but got kinda confused... This ECM pinout I'm using has got me all sort of confuzzled. Check it out here: http://www.powerenterpriseusa.net/pr...risControl.pdf Firstly, everything has two different wires listed and I have no idea what the acronyms stand for. So basically, I have no clue which wires I should be using to tap/intercept. It looks like some things are listed as + and -, while others aren't. Here's what I think needs to be done... FIC Power - A21-1 or A21-2 FIC Gnd - C20-104 Injector 1 - C20-108 Injector 2 - C20-107 Injector 3 - C20-106 Injector 4 - C20-105 MAF+ - C20-118 MAF- - C20-116

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08-11-2010, 10:15 PM	#2
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	Conn A21.jpg Conn C20.jpg Connectors A21 and C20 are the two ECM connectors. The drawings above are looking into the connectors with them removed from the ECM. What's listed is Function, Connector-Pin The MAF also has polarity listed +/- FIC Power - A21-1 or A21-2 FIC Gnd - C20-104 Injector 1 - C20-108 Injector 2 - C20-107 Injector 3 - C20-106 Injector 4 - C20-105 MAF+ - C20-118 MAF- - C20-116

08-11-2010, 11:12 PM	#3
Focus_Sh1ft Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010 Location: New Jersey Posts: 875	This is what I figured. So I was actually correct?? Two things I don't understand then. What's the difference between +B and +B2 on the power source? And is E01 (C20-45) (injectors) kind of like the ground for all four injectors?

08-12-2010, 10:26 AM	#4
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	There's no difference between +B and +B2 (the two pins are connected together inside the ECM). E01 is the common for the injectors.