2) Select “High mode” from “Alternator control” in “System Operation Check Mode”, and measure the battery voltage after 10 seconds or more have passed.
NOTE:
For detailed procedures, refer to “System Operation Check”. 
3) Select “Low mode” from “Alternator control” in “System Operation Check Mode”, and measure the battery voltage.
CAUTION:
Do not continue the “Low mode” operation for more than one minute.
NOTE:
For detailed procedures, refer to “System Operation Check”. 