4efe efi wiring

[bc070400765]

Good Day PakWeelers I recently Swaped my engine from 2kd to 4EFE but i am facing some issues like how can i wire up my rediator fan to ecu.
Thanks in advance.

[Hassan1991]

Yes. install a relay and connect it to ecu fan output

[bc070400765]

Thank u Hassan Rao Brother For your kind reply

Hassan bro are your talking about the relay installed for the radiator fan or i need to connect some sort of another relay.

by the way i will post the pictures of the installed relay by tomorrow InshAllah

Thanks.

[Hassan1991]

your car is originally carby, it will has a relay that is operated by coolant fan sensor, no stock relay for ecu input. but you install one.

[bc070400765]

Last night i checked there is one relay it get's activated when engine reach to it's temperature
or when i unplug the one wire connector near the distributor.

what sort of relay do i need to install and how please explain.
if possible provide me some sort of diagram.

by the way my ecu has no (fan) pin out but has ELS1,ELS2,FC,CF,VF,ACT,NC,

last night i feed ELS1 negative voltage (Ground) Through test light and then Positive (+12v) but
has no impact on the vehicle rmp.

[Hassan1991]

els will not work if IAC is not connected or not in working condition.
that relay work on fail safe condition, you unplug the fan sensor wire it will start working. which generation 4efe you got. except first other gens have fan option.
FC means fuel cut. you have to connect a relay with efi main relay and it will lead to fuel pump.
where are you from?

[bc070400765]

Thanks Hassan Brother for your time
I am from Mardan.I am a software engineer but also interested in electronics.

How do i find out which generation engine i have.
Correct me if i am wrong My IAC is working fine because when i start my car its rpm
is high from the normal and then slightly goes to normal as well as when i disconnect my IAC
Plug rpm goes higher and get back to normal when i plug it back.

Do i need to connect the ELS1 or ELS2 to the relay hot wire (On fan side) or the ground directly.

ELS1---------------------------------Fan----------------Hot wire------- (Relay)

One more thing when i disconnect my MAP Sensor Or IAC Valve i get a engine check light
but when i disconnect my water temperature sensor or my TP Sensor i get no check light / Code
and also when i disconnect my water temperature sensor there is no impact on my car what do
you think is there is some problem.

Hassan brother if possible please gave my your cell no.
Thanks.

[Hassan1991]

Your welcome. @bc070400765
Here read this thread you will find all your answers.

Toyota ee90 2e to 4efe engine swap

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