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Discussion Starter · #1 ·
I have a MG F 2000MY. After standing for 4 weeks it doesn´t start. I hear no priming sounds from the fuel pump. When I measure the voltage at the fuel pump plug, I get 6.5 volt between pins 1 & 2, and 1 & 3
Automotive lighting Bumper Finger Belt buckle Automotive exterior

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Any ideas? Any easy way to check the fuel pump relay?

Regards
David
 

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Voltage which you measured is voltage measured for fuel gauge. This is not voltage for fuel pump coming from relay.

Correct pin numbering you can find on next picture:

Rectangle Gesture Font Material property Parallel


You need to measure voltage between pins 4 and 2 from above picture. That is voltage comming from fuel pump relay where you should get 12 V if relay is working as it should.
 

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Thanks for the input. Do you know the location og relevant grounding connections?
To either prove or disprove a fault earth, I would simply run a 'jumper' lead to a known good earth from the relevant pin on the multi plug. You can then go from there fairly quickly.

I hope that helps?
 
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Discussion Starter · #14 ·
To either prove or disprove a fault earth, I would simply run a 'jumper' lead to a known good earth from the relevant pin on the multi plug. You can then go from there fairly quickly.

I hope that helps?
Thanks Ian.
I tried jumping both the black wires to the body. Then I measured zero ohms between these wires and the body.
I tried applying 12 volts directly to the white/purple wire. Still no joy.

Do I maybe have a dead pump, AND a dead relay?
 

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If you applied proper 12V to white/purple wire and pump did not respond then it might be that pump is not working at all.
Regarding relay, you should check fuse number 2 under bonnet which is 30 amps fuse and you should check that your inertia switch is not tripped.
Before ordering new relay, I would measure that you have 12V on relay socket - position 30.
 
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