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With Consult-II

Start engine and let it idle.
Select "BAT CUR SEN" in "DATA MONITOR" mode with CONSULT-II.

Fig 1: CONSULT-II Display - Data Monitor Mode
Courtesy of NISSAN MOTOR CO., U.S.A.
Check "BAT CUR SEN" indication for 10 seconds. "BAT CUR SEN" should be above 2, 300mV at least once.
If NG, go to DIAGNOSTIC PROCEDURE .