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Fuel pump relay '409' pin out

Discussion in 'General Technical / How To' started by mattpanton, Oct 10, 2013.

  1. mattpanton
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    mattpanton Member

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    [Oct 10, 2013]
    Hi,

    Does anyone have a definitive pin out for the 409 fuel pump relay? I need to retro fit one to an 1.8T (AGU) conversion in a Lotus Elise and the pin labeling on the wiring diagram (Haynes, admittedly) is different to that on the relay?? Some I have managed to work out myself by a process of elimination but I am missing some critical ones.

    What I have so far is as follows...

    [TABLE="width: 500"]

    Haynes diagram

    Relay pin

    Function


    S3/1

    9/TK

    Door switch input


    S3/2

    ??

    +12V on cranking


    S1/1

    31

    Earth


    S3/5

    3/C

    Crash input


    S3/3

    ??

    +12V when ignition on


    502

    2/30

    +12V Permanent


    504

    8/87

    +12V feed to pump


    S3/6

    ??

    Signal from ECU (T80/4)

    [/TABLE]

    Relay pins remaining are, 4/15 and 1/MOT, also I seem to have 8 pins on the diagram and only 7 on the relay????!

    Any help greatfully received! I have been trying to find the answer online all day!

    Matt
    #1
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