New Turbo SC - Not working

I tried to my new fully charged turbo SC connecting to my Canon 580EXII flash with a CZ2 cable and when I switch the turbo on, 2 green LEDs light up for about a second and then go off. Nothing further happens.
Is my Turbo faulty??
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  • You should have Custom Function (CFn) #12 on the 580EX-II set to "1". It is defaulted to "0", which is off. This will segregate the internal AA's from the recycle circuit and make the Turbos work more efficiently.

    When you are turning everything on, hook every thing up first. Turn on the camera, turn on the flash, turn on the Turbo SC. Press the button and as soon as the first light comes on, let the button go. If you press and continue to hold the button, the lights will come on and then off immediately.. See it that helps.
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  • Hi,
    On the 580 EXII, Custom Function no.7 refers to "Test Firing with Autoflash". I suspect this was not your intention.

    I think this should refer to Custom function no.12 (Flash recycle with external power which on the original version 580EX was indeed CF 7). This defaults to "0" which means that the AA batteries work contemporaneously the external power source and is probably intended to work best with Canon's own battery pack which contains 8 AA batteries. Setting Custom Function no. to "1" isolates the internal AA's so that all they power is the Speedlite's internal processor leaving the Turbo to power the flash.

    Reading the note attached to the cable specification on this website the above is briefly confirmed. However there is also a line at the end which states; "In addition, if C.Fn 12 is turned on ES2 should not be used." I have no idea what "ES2" refers to and would appreciate clarification please?
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  • Mea Culpa. I should have put in CFn 12. It should be set to "1". This pertains to any external power source, not just Canon's. It was designed to take the AA's in the battery compartment out of the recycle function and save power in them.

    The Green Energy Saver (ES2) is for use in some of the older Speedlights like the 550EX, 540EX and 430EZ to make the turbo's work more efficiently. The new CFn's in the 580's preclude the use of the Energy Saver since it takes the AA's out of the loop.
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