Need help fitted 4afe engine with engine into 4af corolla ae92

deanowp (Dean Snyman) 2022-01-04 13:57:28 +0500 #1

Hi guys hope you doing well i know will find help here.
I fiited a 4afe engine with engine harness into my 4af.i also noticed that the 4afe harness does not plug into the 4af interior harness.
My question
1.need help or need a 4afe pinout that connects to interior harnes for 4afe and 4af.
2. I need to power up my ecu from the 12 pin which wires need to go where

Thank you in advance
Dean

deanowp (Dean Snyman) 2022-01-04 14:00:25 +0500 #2

My 4af plug

deanowp (Dean Snyman) 2022-01-04 14:02:11 +0500 #3

My 4afe plug that needs to connect into interior harness

Hassan1991 (Electrical Engineer ) 2022-01-04 15:02:38 +0500 #4

It's better if you swap the interior wiring with ae90.
So every connector will fit right in without cutting or messing the wiring.
If you need this to work then you need ecu fuse box that contain efi main relay and fuel cut relay with fuses.
That fuse box will turn the ecu on and connect with this connector.

deanowp (Dean Snyman) 2022-01-04 18:14:06 +0500 #5

Ive also got the fuse relay box inside the engine bay aswell will try and locate the interior harness

Hassan1991 (Electrical Engineer ) 2022-01-04 18:30:00 +0500 #6

Carby one doesn't got these relays.
Efi got a separate small fuse box next to the engine bay fuse box.

deanowp (Dean Snyman) 2022-01-04 20:29:21 +0500 #7

Ive got the 4afe fusebox aswell that located in the engine bay with efi relay it came with the loom

deanowp (Dean Snyman) 2022-01-04 20:33:31 +0500 #8

I would also like to know does the +B and +B1 WIRES go to ignition wire or direct onto battery or does the BATT wire goes to battery positive to let the ecu gets power

Hassan1991 (Electrical Engineer ) 2022-01-04 21:13:23 +0500 #9

BATT is memory wire goes direct to battery through 10-15amp fuse.
+B and +B1 goes to efi main relay. Gets power from ignition switch.

deanowp (Dean Snyman) 2022-01-05 12:56:45 +0500 #10

Thank you @Hassan1991 now i know i can atleast power up my ecu

Hassan1991 (Electrical Engineer ) 2022-01-05 13:53:28 +0500 #11

No need.
This will help you in wiring.

deanowp (Dean Snyman) 2022-01-06 10:48:28 +0500 #12

I want to connect my fuel pump up aswell doni only need to use the FC wire with relay to fuel pump positive

Hassan1991 (Electrical Engineer ) 2022-01-06 12:43:49 +0500 #13

Ecu leads ground to FC relay. They relay leads positive coming from Efi main relay to fuel pump.
Wire it same as the diagram above.

deanowp (Dean Snyman) 2022-01-06 18:40:21 +0500 #14

Thanks hassan for the help does the FC wire on 12 plug goes to efi relay and and fuel pump positive to efi relay

Hassan1991 (Electrical Engineer ) 2022-01-06 20:01:26 +0500 #15

Fuel pump connects to circuit opening relay.
Positive coming out of efi main relay goes to +B , +B1 of ecu and circuit opening relay.
To make it easy, in 4 pin relay. (For fuel pump)
There are 2 coil pins, 1 common and 1 normally open.
1 coil pin (+) and common pin of relay goes to the wire coming out of efi main relay other coil pin (-) goes to FC pin of ecu.
Last pin which is normally open of relay goes to fuel pump.
In toyota fuel pump will not turn on until you crank the engine. While it stays on for 2 seconds and turns off if engine doesn't start.

deanowp (Dean Snyman) 2022-01-06 20:29:01 +0500 #16

Thanks again i really appreciate the help guys..

deanowp (Dean Snyman) 2022-02-10 19:14:28 +0500 #17

UPDATE.....
HI guys i got my self a complete dashboard harness for the the 4afe ecu so the car started up but i needed to start it from the starter id did not wanted to start from the inside.so no i just need to sort out the starting issue.
2nd my parks lights don't work as well as my rear back lights even if i apply brakes. Need tjat to ne fixed

deanowp (Dean Snyman) 2022-02-21 13:35:25 +0500 #18

SORTED update guys vehicle is sorted car start from the inside thank you to this group and all that help. Thanks gents