Hi Speed Wiper 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 wiper switch is turned to the high position, the BCM detects a high speed wiper ON request through the combination switch (wiper switch) reading function.
The BCM then sends a front wiper HI request signal over CAN communication lines
- from BCM terminals 39 and 40
- to IPDM E/R terminals 39 and 40.
When the IPDM E/R receives a front wiper HI request signal, it supplies ground to energize the front wiper and the front wiper high relays.
With the front wiper and the front wiper high relays energized, power is supplied
- through front wiper relay
- to front wiper high relay
- through IPDM E/R terminal 35
- to front wiper motor terminal 4.
With power and ground supplied, the front wiper motor operates at high speed.