I connected my OBDII reader to the car this evening and before it had even been connected up properly (plug in dash but other end not connected to reader) I got a loud solid tone from the alarm module, air suspension fault, no interior lights, and central locking all failed. I get repeated solid tone all the time unless I have the key in the ignition in position 1 and have the RAC diagnostic cable connected. Plugging the usb end into my lappy to get RAC up and running causes it to go off with a solid tone again.

HELP! It's getting late and my neighbours are going to be really off with me.

Oddly enough I can still start the car with the key and drive it.

Power steering has gone all heavy, and the interior lights are flashing a bit.

Feels like some sort of short circuit?

dis-connect the battery....remember to do the steering wheel sequence when re-connecting... ... - .- -.




Y. O. L. O.
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was the lead connected to your laptop, what i am looking at is any type of power short, now this may sound strange, have you closed the obd flap as some of them have a small jumper in the flap.. just a thought  V8 facelift Range Rover Autobiography 22" wheels.
1976 Harley Davidson Iron Head Sportster

stan wrote:

dis-connect the battery....remember to do the steering wheel sequence when re-connecting...

sorry just read your post again, you did say it was not connected, close the flap and disconnect the battery give it 5 mins and reconnect, make sure your keys are NOT in the ignition when you reconnect. V8 facelift Range Rover Autobiography 22" wheels.
1976 Harley Davidson Iron Head Sportster

daveo wrote:

was the lead connected to your laptop, what i am looking at is any type of power short, now this may sound strange, have you closed the obd flap as some of them have a small jumper in the flap.. just a thought

daveo wrote:

sorry just read your post again, you did say it was not connected, close the flap and disconnect the battery give it 5 mins and reconnect, make sure your keys are NOT in the ignition when you reconnect.

Sounder has stopped beeping for the time being. Going to have to leave it like that now overnight. It's all unlocked though - daren't touch it in case I set it off again.

What a mess. Will have to try reconnecting the battery tomorrow.

I think you've popped the fuse for the BCU... Its in the glovebox fusebox... Have popped the fuse twice on customers cars whilst converting and they come up with the identical faults you are describing... I cannot remember which fuse number it is and im not sure off the top of my head what the fuse symbol they use either...Sorry to be vague! Just visually check them quickly, im quite confident you'll find one gone...



Craig

Many thanks for that Craig. I'm popping home at lunchtime to take another look, so will check that first. Is it a standard automotive fuse? Got plenty "in stock" if it is.

Yes, a 10amp if memory serves me correctly, start on the bottom row as i think i checked almost all of them before i found the blown one...



Craig

I got this when I pulled Fuse 8 (radio) a while back, alarm went away when i put it back in though. Don't think I had the key in either. .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Many thanks to Craig - Fuse 15 blown (5A). Only took two attempts to find the right one!

Replaced and now all fine again.

Phew!

Last edited by ric355 on 12th Apr 2012 12:04pm. Edited 1 time in total

Excellent result.. Fare play to Craig

nice prognosis craig....  ... - .- -.




Y. O. L. O.
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