CX Starter Circuit
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  1. #1
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    Default CX Starter Circuit

    CX Starter Circuit-20180523_140952_resized-002-.jpg
    Can anybody explain to me what this is supposed to achieve. Yes, it is a 6 ohm (or thereabouts) resistor, with another 1.5 ohm one not connected. The way it is wired up, it simply connects the key start circuit to earth when operated - but why, when that just adds a couple of amps to the key switch load? Might there be a wiring error, perhaps? Or ... ?

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  2. #2
    1000+ Posts gerrypro's Avatar
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    It doesn't look original! Why has it been added!
    Cheers Gerry

  3. #3
    1000+ Posts Ken W's Avatar
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    Maybe it is there to quickly remove the inductive energy from the starter solenoid coil when the starter has done its work and the key is released?? A reverse diode would be a much more efficient way to do that though.

    Cheers, Ken

  4. #4
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    Quote Originally Posted by Ken W View Post
    Maybe it is there to quickly remove the inductive energy from the starter solenoid coil when the starter has done its work and the key is released?? A reverse diode would be a much more efficient way to do that though.

    Cheers, Ken
    Agreed, but when the key is released and the relay cuts off, it is only connected back to the key, not the solenoid coil. Hence my suggestion that, at least, I have a connection problem.
    PB

  5. #5
    1000+ Posts Ken W's Avatar
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    So there is a starter relay installed - that is an upgrade as well - a worthwhile one too.

    Cheers, Ken

  6. #6
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    Quote Originally Posted by Ken W View Post
    So there is a starter relay installed - that is an upgrade as well - a worthwhile one too.

    Cheers, Ken
    Friends, I think we have an answer. Without a starter relay, low current flow is possible from the key switch cable to ground via the starter motor solenoid. This has something to do with a connection to something ... - more likely not the Citroen Eye, but the L-Jetronic Injection and its peripherals, which comes into (or off) the key switch lead at some indeterminate location. So, once a relay is installed, that is lost, so a separate ground connection is required - but through a resistor as a means of limiting current when not in the actual start position. Therefore, a new starter relay and a bit of tidying up of wiring may be all I need!

  7. #7
    1000+ Posts Ken W's Avatar
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    So it is fuel injected as well.

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