jskyline

I starting to having this problem recently. The cooling fan will come on whenever the key is on the ON position. Even on a stone cold engine. Help me please...

brad89au

there is a diagnostic wire or something that comes off one of your relays that when grounded the fans will always run. just had a look its called the TFA terminal ground it is a GREEN w/ black stripe wire that comes out of both cooling fan relay two and four. in the wiring diagrams its listed as diagnosis connector.

hope this helps,
Brad.

jskyline

you talking about the relay in the engine bay on top of the passenger side fender liner?

brad89au

certainly am, im not sure which ones they are specifically (eg top front or whatever) just disconnect your negative terminal and unplug one relay at a time looking at the wires that come out from underneath each of them.

jskyline

Thanks I will check that tomorrow.

teachermechanic

iTrader: (4)

also check your sensor on thermostat housing, if it's disconected fan go on.

jskyline

how the connector looks like? what color and how many wire?

Smitter

high water temps will cause the fans to run when the key is on.

dhays

iTrader: (1)

But OP said it happens even with a stone cold engine.

Smitter

my bad

eo2am

iTrader: (9)

one thing that can be over looked is the ac button can be on.

jskyline

my AC button is not on.

eo2am

iTrader: (9)

then it has to be a bad sensor or relay. I would start be removing one relay at a time to see which is stock open/closed.

TpCpLaYa

iTrader: (10)

there is a thermosensor on the back of the thermostat housing i believe

if you still have the stock crossover pipe that runs from the turbos to the IC it is probably below that....it has a green connector and i am willing to bet that is ur problem

ill try to find a pic

TpCpLaYa

iTrader: (10)

k look in this area

sorry pic is shitty but i had the exact problem and this lil sensor was the cause


my wiring was bad so inspect it all

eo2am

iTrader: (9)

according to the service manual its the round one with the black red wire

jskyline

thanks for all the information. I will check that tomo.