[urq] Cold start valve ?

[Louis-Alain Richard]

Hi everyone,

Got a new job, after 13th month as a dad-at-home (cool period, guys, I 
recommend it to everyone that can). I am again an editor in chief, this 
time for a free car magazine in the montreal area.

So, last night and this morning, at -20C, my beloved urQ refused to 
fire, for the first time in years. I suspect the cold start valve, 
since I didn't smell any gas, and it finally catched after a long 
cranking period, with the help of another battery. Otherwise, car runs 
fine, and pull strongly thanks to cold air (yeah!).

So question: what is the firing sequence, or circuitry for the CSV ? 
Which sensor provides the signal ? Is the ECU involved ? How to test it 
easily ?

Thanks in advance,

Louis-Alain