The JD 1504 technical manual says without a jumper in the computer code reader connector there should be a steady one second on and one second off PVC LED output. It also says if no fault code exists or trouble is beyond the scope of the self diagnostic function, with the jumper installed, there will be no flashing of the LED. My PVC flashes a steady one second code with or without the jumper installed. Does this mean the PVC has failed? The input of someone with knowledgeable experience...
Question on JD490E PVC code reading
Question on JD490E PVC code reading
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