[Rovernet] Brake fluid warning light/switch

[magnet at ican.net]

As I recall, all the sensors that work the warning light earth the light 
circuit when there is a fault.  These are on the two reservoir caps, the 
brake discs, the front/rear fluid distribution block near the servo, and 
the hand brake.  The "hot" lead to the lamp visits each of these in tun, 
although I dont know in what order. You could try earthing each one 
manually with a bit of wire to the chassis, and see if the lamp lights 
up.  If it lights on one or more, but not all, that should help you 
locate the problem.  If there is still no action, try with a voltmeter 
on the positive lead to the sensors (with the ignition on).  Should read 
12 volts. If nothing, must be a fault in the supply to the entire 
circuit.  (Thought: is there a fuse for this brake warning light circuit?)


Cheers,


Bill D.



On 12-Jul.-2021 11:57 a.m., Lance La Certe via Rovernet wrote:
> I would appreciate some diagnostic help.  '70 3500S  NADA. The warning 
> light for brake fluid levels is not working.  I've checked the 
> lightbulb on the dashboard and it is good.    I've lifted each of the 
> two reservoir caps several inches to get the high tech (LOL) corks to 
> lower and no light.   I tried jumping the cap wires to close the 
> circuit, and nothing.  I've made sure the emergency brake is not engaged
>
> Any help would be appreciated.
>
> Lance
>
>
>
>
>
>
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