2003 NISSAN MICRA III K12 - Removing radiator fan connecter

Honest John Back Room » Technical matters
View Threaded
Thu 10 Oct 2019 17:38
2003 NISSAN MICRA III K12 - Removing radiator fan connecter - MrD2018

I believe my radiator fan is no longer working and I would like to test it by connecting the fan to a separate 12V power supply. I am having trouble removing the power connector for the fan. Here is a picture of the connector.

photo1

I have seen other pictures of this fan and it seems you have to push the connector from both sides to remove it. That does not seem to be the way with this connector and I am not sure how to remove it. I am afraid if I do this wrong I will damage it. I assume it can be easily removed as replacement fans I have seen do not have a cable attached. Any ideas on how to do this?

Reply | Report as offensive | Link
Thu 10 Oct 2019 17:59
2003 NISSAN MICRA III K12 - Removing radiator fan connecter - elekie&a/c doctor
Carefully squeeze the two short ribbed ends of the connector . This should release the locking tab visible along the longer length . You may need a small screwdriver to help it along .
Reply | Report as offensive | Link
Fri 11 Oct 2019 15:57
2003 NISSAN MICRA III K12 - Removing radiator fan connecter - MrD2018

Thanks, I managed to remove it with a self grip wrench!

The 2 terminals inside give no indication of which is the positive and negative connector. Does it matter which way round I connect the battery to it? Will it simply spin in the opposite direction if I get it wrong? Or could it result in damage?

Reply | Report as offensive | Link
Fri 11 Oct 2019 17:01
2003 NISSAN MICRA III K12 - Removing radiator fan connecter - elekie&a/c doctor
No .,doesn’t matter . If you connect it wrong, it will spin the other way
Reply | Report as offensive | Link
Fri 11 Oct 2019 20:20
2003 NISSAN MICRA III K12 - Removing radiator fan connecter - bathtub tom
No .,doesn’t matter . If you connect it wrong, it will spin the other way

Are you sure? Trying to manipulate my old arthritic hands to Fleming's left hand rule. If you reverse the current, then you reverse the field, but the motion remains the same (I think)!

Reply | Report as offensive | Link
Fri 11 Oct 2019 20:52
2003 NISSAN MICRA III K12 - Removing radiator fan connecter - elekie&a/c doctor
It’s a permanent magnet motor . This is how an electric window motor works . Reverse the polarity and the motor spins the other direction.
Reply | Report as offensive | Link
Fri 11 Oct 2019 23:30
2003 NISSAN MICRA III K12 - Removing radiator fan connecter - bathtub tom

OK, sorry!

Reply | Report as offensive | Link
Sat 12 Oct 2019 00:10
2003 NISSAN MICRA III K12 - Removing radiator fan connecter - elekie&a/c doctor

I remember in the 90s ,we used to see some Rover models that would overheat when the aircon was used. We discovered that the cooling fans were wired incorrectly ,so when operating, air was being blown forward through the bonnet ducting rather than sucking air into the engine bay. Good old BL engineering .

Reply | Report as offensive | Link

10 warranty myths exposed

Here’s how to sort the fact from the fiction when it comes to car warranties.

Cheap Car Warranties

Looking for a garage you can trust? Honest John's Good Garage Guide has thousands of reader recommended garages, plus how-to guides and tips on servicing.

The Good Garage Guide