boot opens went turn fan on

[tmuir11]

hi i just brought this vt commodore when i turn the fan on for the ac it opens the boot and turns the interior light on the interior light stays on until i turn it back off could anyone tell me where to start looking to fix this problem

[FATMOE]

#### that's the weirdest thing I've ever heard of. That's gold lol

[VRCALAISS]

practical joke hahaha

[HSV5L]

Thats hektic is it haunted or ?

[Hot-Rod]

tmuir11 welcome to Just Commodores Forum. Got no idea on your problem but its diffently unique I'll give you that hahaha. Obviously electric gremlin.

[VRCALAISS]

it's a first i tell ya.

[ClairBear]

You say you just bought this car. No prizes for guessing why the previous owner sold it

[acarmody]

LOL, thats gold.

I'd be looking at the BCM going down shit creek.

[tmuir11]

any way i could test the bcm?

[accentstencil]

any way i could test the bcm?

I don't think so. You could try resetting it by disconnecting the battery for a few minutes. If you have the stock radio you will need the PIN code handy.

[tmuir11]

i swapped it out for the one in my ute and it didnt do it but wouldnt start so i guess it has to be a one out of a manual correct? if so where abouts could i find one?

[VRCALAISS]

you'll need a bcm that has the same number on it,did you use your ute key on it?the key is programmed in to the bcm,you'll need a key head an bcm.just by one off a wreck with the key.

[accentstencil]

You will also need to have the BCM and ECU linked before it will start. It's a security thing so you can't just steal a commodore with your own BCM and key.

[tmuir11]

how do u get the bcm and the ecu linked?

[accentstencil]

how do u get the bcm and the ecu linked?

You will need a Tech 2 or other compatible scan tool to link them. Holden, some auto electricians and mechanics will have one. There is no other way, unless you get a BCM, ECU and remote that are already linked from another vehicle.

[VT_SS]

Thats got to be the weirdest prob i have ever heard of happening ring the former owner and see if he will come clean about whats caused this prob to happen.

[vn_v6]

Lol!......

[lout]

been watching this for a while, but looked too complicated to get involved
anyway everyone has had a good laugh but nothing super helpful
do you have factory air or aftermarket?
does it fault when you turn heater fan on or only A/C and fan?
most likely you have a short in a loom somewhere (good luck finding it)
look for modifications to car that may have damaged loom or where someone inexperienced has been
doubt it's a BCM as A/C is controlled by ECU, fan is controlled by BCM

[Mick1988]

Best way to check the BCM is to buy a complete set (BCM, ECU and key head). You'll need the BCM and ECU to both have the same part numbers and make sure you get one with a key with the right number of buttons.

[lout]

Hey tmuir, just doing some reading and found an old tech bulletin that deals with your problem
it is caused by a faulty "blower fan speed controller" in vehicles with climate control

[tmuir11]

i dont think mine has climate control its just 1 2 3 4

[HSV5L]

Climate controll is digital with lcd screen.

[Cashman_309]

No, he wouldn't have climate control
"Ride: vt executive v6 manual"

[tmuir11]

If I got a new ecu bcm and key head would I have to get the ones with the same code on them that was in the car originally

[Jonesy484]

GOLD!!!