430 Battery Drain

My battery has a constant drain which i have traced to fuse AF17. ( 15 amp rating ) in the front boot space. Manual says this is Blinking internal lights, hazard blinking indicators, direction indicators. Current draw is 0.4 Amps. It must also supply the light in the front boot.
Anyone have any experience with something similar ?

 

Does the car beep when you unlock it?

 

I did some time ago on a 360. The flasher module up under/behind the glove box was hot to the touch. Something internally had gone south. I replaced it and it was all better. Unplug it and see if the battery draw goes down to where it should be.

 

AF17 fuse feeds the Hazard/Turn Module and the Interior Lights Timer Module.

The Interior Lights Timer controls the front boot light as well as the interior dome light. It doesn't provide power to them, but I imagine it will use a little power to control the earth to the lights. 0.4 amps seems a little high though, unless it has a similar issue to Rifledriver's flasher module. Note that the F430 Flasher Module has a different design/pin configuration to the 360's.

Latest wiring diagram here:

https://www.dropbox.com/t/ZXgpaicPFXwJcEQE

I'm not sure where the Interior Lights Timer Module is on a RHD 430, but on a LHD it's possibly up around the driver's left knee area.

 

Out of curiosity, what if it doesn’t beep when you unlock it?

 

That's a good thing. A beep (or several) is a code to indicate that the alarm was triggered or that one of the closures e.g. hood isn't secure.

 

Update, the flasher unit was ok, turns out the 0.4 amp drain is coming from the front boot light, having the boot open to read the meter, tripped the latch by hand and now zero. Looks like the only draw on the fuses is related to the window switches, between 0+0.1 A on each fuse. Light is on permanent on each switch and never found out why. Door bleep is normal

 

Re Max fuses by the battery- No4 is a 60 amp labeled in owners manual as 60A +30 front guard. This is drawing 0.7 amp with front boot open, pull the fuse and front boot light goes out. Trip front boot switch and this drops to 0.3 amp which makes sense as front lamp was taking 0.4 amp. Still a loss of 0.3 amp somewhere.
Max 3 fuse loss of 0.06 amps- label is 50A+ 30 AC
Remaining max fuses are zero

 

That's why I asked about the bleep from the alarm, Mike. It indicates that one of the closures isn't secure - in this case the luggage compartment which leads to the light being on permanently.

 

Maxi fuse 4 feeds fuses AF2, AF6, AF10, AF14, AF18, AF1, AF5 (switch lights, but not the window switch lights), AF9 (Instrument Panel), AF13 (internal lights timer, etc) and AF17.

Maxi fuse 3 feeds the HVAC ECU and the blower fan speed controller ("hedgehog"). Not sure why this would draw current with the ignition turned off. Does the ECU have any memory circuits?

HVAC diagram here:

https://www.dropbox.com/t/2Hj6VUrqJiWWOWyl

Window switch lighting power comes from the Window ECU. I assume there are circuits in there to keep things active for certain time periods. Live battery power goes to the Window ECU via fuses behind the LH seat (PSF3 and PSF7)

Window diagram here:

https://www.dropbox.com/t/PEaaJD3SjgQcjhPl

 

I will try putting my phone in there to record, but if i trip the bonnet catch by hand the light goes out, so i think it is ok

 

I checked everything in the front boot, only draw was the AF17 @ 0.4 amp and when i tripped the boot catch and boot light went out it was zero. But still have a 0.3 amp draw on max4 fuse
From what i recall the light on the window switches should go off after a while but they dont. The car has a fuse for each window but the amp draw effects each fuse , both switches have same stay on issue

 

Did you find the Internal Light Timer module? Try disconnecting that or pull fuse AF9.

(EDIT: I see you already checked those fuses)

 

Any idea where it is ? From what i recall the door switches and internal light have same fuse, i think i was measuring the flow on this and turned off the light, shut the doors and then had zero amps

 

Pulling AF9 should have the same effect, but I see you may have already checked the current on that.

 

It's not really clear from the parts or wiring diagrams

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Passenger's left hand knee (RHD car)?

 

LHD car location here:

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Under the dash to the left somewhere.

 

Looks like it's mounted against the side wall

 

I think i see one of your wallets tucked behind it, that will be well padded then

 

lol

 

I have 2 Greggs sausage rolls in the oven heating up, i bet you miss them

 

31% of daily intake of fat... mmmmmmm (according to their website)

Actually, I don't remember them (from my childhood). I only remember Yorkshire pudding and cold pork pies (not served together).

 

Only once a week and i never use big mac or the kfc down the road

 

Using my phone, the front boot light goes out when you close it

 

Did you notice a delay on the light? It is hooked up to the timer. If you lock yourself inside, I guess it gives you enough time to see and pull the internal release handle (on USA cars at least).