AO Gold Member
Join Date: May 2008
Location: United Kingdom
County: Perth and Kinross
The pump will only run when it needs to. For example, if you open the door first thing in the morning it will prime. It may not run if you close and open it again immediately, if the system has enough pressure (assuming the pressure sensor is good).
So... with the car not running, and the ignition at 'MAR', you should (normally) be able to change gears (you need your foot on the brake to do so). What happens when you try this?
There's a thought...it might be is the brake pedal switch. Have someone go round the back and see if the brake lights are coming on when it's pressed.
Couple of other things to try...locate the 20-way sele loom connector (usually lurking between the battery and the engine). Separate it (pull the tab at one side) and check the connections inside are clean.
The door-open indicator can be read with AlfaDiag or FiatECUscan. I don't know if the interior light uses the same circuit or not...
A faulty accumulator (which stores the hydraulic pressure) would usually cause the pump to run too often... What you could do, if you're feeling brave, is remove the battery and battery tray. Under it you'll see the pump with 2 wires (one red, one black) going to it. Unplug that and power the pump directly from the battery to see if it whirrs. If it does, don't do it for too long, no more than 5 seconds or so. If it doesn't, give it a knock with the handle end of a hammer to see if it springs into life (would indicate bushes).
Anything beyond that probably needs the assistance of AlfaDiag/FiatECUscan to have a look around the system to see what it thinks is happening... There might be someone in your area who'd give you a hand...
Last edited by iainfm; 29-06-10 at 21:39.