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Fuel pump not getting power


Zakk E.
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I am experiencing issues with my aygo(2006) it started running roughly, misfiring and eventually it doesn’t start up. It cranks but the fuel pump does not activate. I measured the voltage going to the fuel pump when the ignition is turned on and got nothing. I tried feeding electricity directly into the fuel pump and sure enough it gives off a low buzzing sound. So I have concluded that there might be a problem with the relay. I cannot however get to it and am wondering if anyone here knows how to get to it, test it and replace it.

As far as I know the aygo 1 does not have a standard relay and instead uses some chip thing. In diagrams that I have found the fuel pump relay is marked as R4. And it should be underneath the fuses in the front of the car. I got the top cover and the bottom cover off(the clips were a nightmare) I un mounted the fuse box but still have limited access to it due to it still being connected with a lot of wires. 
Can anyone help me with solutions regarding getting to the R4 chip testing it and if needed replacing it or finding what else might cause this.

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As mentioned in another thread this is the part I need to test. But there is no mention on how to get to it.356302DD-E529-414E-A62C-CEDD533ADC58.jpeg.a9bca8a75fd7ead3582c4df66b887708.jpeg198B638B-64FB-4940-B5AB-DD72AE98E515.jpeg.bbf96fbd9f1cdda6493cef768a66f2c2.jpeg2D41120C-9758-48E6-A9C3-365FB3547D34.png.24e34dc71539a0367eb10aa04ceea5de.png

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That board is inside the main fuse box, you need to remove the fuse box then strip it down, first i would confirm power is on the fuel pump fuse remove the fuse and check the condition of the terminals and replace the fuse with a new one, check that you are getting a control signal to the fuse box

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Only problem I have is any information regarding the removal of said fuse box. I have so far managed to remove both the top and bottom cover(the latter was an enormous pain) but my efforts to remove it entirely have been unsuccessful.

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Unbolt it, unplug and remove the bottom plastic to remove the 2 alternator cables from its fusible link, striping it down on a bench or table, the fuse box is modular it all just bolts/clips

 

 

 

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