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Current draw 1990 S2

Posted: Tue May 07, 2024 9:32 am
by CEW
If the car sits for a week, it starts kinda slow and I lose my radio presets.

Current draw is around 90mA with all fuses in place. When I remove fuse #8 (central locking) it goes down to around 26mA. Is my central locking module shorted inside? Or what could be causing this?

Thanks.

Re: Current draw 1990 S2

Posted: Wed May 08, 2024 11:16 am
by Tom
CEW wrote: Tue May 07, 2024 9:32 am If the car sits for a week, it starts kinda slow and I lose my radio presets.

Current draw is around 90mA with all fuses in place. When I remove fuse #8 (central locking) it goes down to around 26mA. Is my central locking module shorted inside? Or what could be causing this?

Thanks.
Does your central locking work ok? All locks functional? I'm not sure what it is supposed to draw, but 90mA is pretty high overall. Anything else on that fuse?

Re: Current draw 1990 S2

Posted: Wed May 08, 2024 12:45 pm
by CEW
Central locking works ok but not perfect. The drivers door lock actuator does not lock/unlock. The console switch works and operating the drivers door lock with the key will actuate the passenger lock and turn the blinking red lights on both lock knobs on.

The “relay sun roof” is also on that fuse. No problems with the sunroof operation.

Re: Current draw 1990 S2

Posted: Thu May 16, 2024 8:32 am
by icb
Have you made any progress with this?
How are you measuring the current draw?

Re: Current draw 1990 S2

Posted: Mon May 20, 2024 2:26 pm
by CEW
No further progress yet…no time to dig into it.

Im using a digital vom and measuring mA in series between the neg battery cable and neg post.