Front Washer Operation

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

When the ignition switch is in the ON or START position, and the front and rear washer switches are OFF, the front and rear washer motor is supplied power

through 10A fuse [No. 15, located in the fuse block (J/B)]
through combination switch (wiper switch) terminal 2
through combination switch (wiper switch) terminal 4
to front and rear washer motor terminal 1.

When the front wiper switch is in the front washer position, the BCM detects a front washer signal request through the combination switch (wiper switch) reading function.

Combination switch ground is supplied

to front and rear washer motor terminal 2
through combination switch (wiper switch) terminal 3
through combination switch (wiper switch) terminal 9
through grounds M57, M61 and M79.

With ground supplied, the front and rear washer motor is operated in the front direction.

When the BCM detects that front and rear washer motor has operated for 0.4 seconds or longer, the BCM uses CAN communication and sends a wiper request signal to the IPDM E/R for low speed operation of wipers.

When the BCM detects that the washer switch is OFF, low speed operation cycles approximately 3 times and then stops.