Front Wiper Auto Stop Operation

BCM stops transmitting the front wiper request signal when the front wiper switch is turned OFF.
IPDM E/R detects the front wiper stop position signal from the front wiper motor and detects the front wiper motor position (stop position/except stop position).
When the front wiper request signal is stopped, IPDM E/R turns ON the front wiper relay until the front wiper motor returns to the stop position.

Fig 1: Front Wiper Auto Stop Operation Chart
Courtesy of NISSAN NORTH AMERICA, INC.

NOTE:

BCM stops the transmitting of the front wiper request signal when the ignition switch is OFF.
IPDM E/R turns the front wiper relay OFF when the ignition switch is OFF.