MembersPage/GrantHendricks/CorollaWiring (2009-09-04 01:46:56)

For those new to VEMS, the ECIII header on these tables is just the name for the large connectors on the VEMS box. Number in setup refers to the name of the function when using MegaTune.


Power


Power
Wire Color Use number in setup ECIII pin
Black/Red EFI Relay #1 +13.8VBATT 25
Grounds
Wire Color Use number in setup ECIII pin
Brown ground to CLT GND 26
Brown ground to TPS GND 26
Brown ground to IAT GND 26
Brown ground to GND5 & chassis close to ECU GND 26
Coax Sheild ground to CAM Triggers GND 26
Black power grounds 2 each to intake GND5 32
Black power grounds to intake GND5 21
Black ground to GND & chassis close to ECU GND5 21
Black power grounds 2 each to intake GND5 5

TPS

TPS switch
Wire Color Use number in setup ECIII pin
Red Wiper TPS pin1
Light Blue/Red PWR TPS5V pin28
Brown common GND pin26
Light Blue Switch   

Injectors

Injector
Wire Color Injector number in setup ECIII pin
Yellow Injector power EFI Relay  
  Injector #1 INJA pin7
  Injector #2 INJB pin19
  Injector #3 INJC pin8
  Injector #4 INJD pin20

Coils setup

The pairs I will use so I can run wasted is
Wire Color Transistor number in setup ECIII pin Cyl
?? Q16 #0 pin35 1,4
?? Q21 #1 pin33 2,3

CLT

Wire Color Use number in setup ECIII pin
?? CLT CLT 14
Brown Gnd Gnd 26

IAT

Wire Color Use number in setup ECIII pin
Yellow/Black   MAT 2
Brown Gnd Gnd 26

CAM Trigers

CAM Trigers use coex
Wire Color Use number in setup ECIII pin
Ne coax TRIGG1_CONN 27
G1 coax TRIGG2_CONN 13
G- shield GND 26

WBO²

ground the green coex to gnd

WBO²
Wire Color Use ECIII18 pin WBO² pin
?? PUMP(-) 7 5
?? PUMP(+) 9 6
coex NERNST_CELL1 13 1
?? HEATER1(-) 18 4
?? Power N/A 3
Power will come from the old wire that went to the NBO²

Tachometer

Tachometer
Wire Color Use number in setup ECIII18 pin
?? goes to cluster(tach) STEP_B 10

Knock

Knock Use coex
Wire Color Use number in setup ECIII pin
?? KNOCK1   34
Shield Knock gnd   36

Fan

Fan Reley
Wire Color Use ECIII18 pin
?? STEP_C 5

Fuel Pump Power Control

Fuel Pump
Wire Color Use number in setup ECIII pin
Green/Red relay STEP_A small#4

IAC

Need to add a flyback diode between the pins?

Wire Color Use number in setup ECIII pin
?? will be the IAC control INJG pin6
?? will be the IAC control INJF pin18
?? Switched power N/A N/A

VVT valve

Wire Color Use number in setup ECIII pin
?? ?? ?? ??

Check Engine Light

Wire Color Use number in setup ECIII pin
Green/White ?? ?? ??

Charcoal Canister valve

Wire Color Use number in setup ECIII pin
?? ?? ?? ??

EGR valve

Wire Color Use number in setup ECIII pin
?? ?? ?? ??

Serial Port

Wire Color Use number in setup ECIII18 pin
Red RxD RxD 14
Brown TxD TxD 15

C BLACK firewall connector

C_plug.gif

NOTE: Pins may have different uses on other trim models/year of AE86. This is specifically for a 1986 US spec "Kouki" GT-S with 4AG-EC (16V with EFI). Generally, auto transmission uses pin 8 for coil and igniter power and leaves 14 blank, Manual transmission uses pin 14 for the same purpose and leaves pin 8 blank.

Will add the remaining pins tomorrow.

PIN #ColorFunction
1Yellow/Green Water Temp
2Black/Orange Injector and Coil Power
3Red-BlackBackup Light
4  
5BlackIdle-Up
6  
7Yellow/Black Oil Sender
8  
9Red/Light BlueBackup Light (+12)
10  
11WhiteA/C PSI Switch
12Black/WhiteA/C Clutch
13BlackTacho
14Black/WhiteStarter
15