Low Speed Wiper Operation

When wiper switch is in LOW position, BCM detects low speed wiper ON signal by BCM wiper switch reading function.

BCM sends front wiper request signal (LO) with CAN communication line

• from BCM terminals 39 and 40
• to IPDM E/R terminals 48 and 49.

  When IPDM E/R receives front wiper request signal (LO), it turns ON front wiper relay located in IPDM E/R, power is supplied

• to front wiper motor terminal 1
• through IPDM E/R terminal 21 and front wiper relay and front wiper high relay.

  Ground is supplied

• to front wiper motor terminal 2
• through grounds E21, E50 and E51.

  With power and ground supplied, the front wiper motor operates at low speed.