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WASHER SYSTEM WW-3 C D E F G H I J L M A B WW WASHER SYSTEM PFP:28810 System Description EKS001IS WIPER OPERATION With the ignition switch in the ON or START position, power is supplied ● through 20A fuse [No. 34, located in the fuse block (J/B) No. 2] ● to front wiper motor terminal 4 and ● to front wiper relay terminal 1. Ground is supplied to front wiper switch terminals 17 and 20 through body grounds M25 and M115. Low (MIST) and High Speed Wiper Operation When the front wiper switch is placed in the LO or MIST position, ground is supplied ● through terminal 14 of front wiper switch ● to front wiper motor terminal 6. With power and ground supplied, the front wiper motor operates at low speed. When the front wiper switch is placed in the HI position, ground is supplied ● through terminal 16 of front wiper switch ● to front wiper motor terminal 5. With power and ground supplied, the front wiper motor operates at high speed. Auto Stop Operation When the front wiper switch is placed in the OFF position, the front wiper motor will continue to operate until ● from terminal 14 of front wiper switch ● to front wiper motor terminal 6, in order to continue front wiper motor operation at low speed. Ground is also supplied until the wiper arms reaches the base of the windshield ● through terminal 13 of front wiper switch ● to front wiper relay terminal 3 ● through terminal 4 of front wiper relay ● to front wiper motor terminal 3 ● through terminal 1 of front wiper motor, and ● through body grounds E42 and E62. When the wiper arms reach the base of the windshield, the switch in the front wiper motor moves to the Intermittent Operation Intermittent operation is controlled by the BCM. When the front wiper switch is placed in the INT position, ● to BCM terminal 9 ● from front wiper switch terminal 15 ● through body grounds M25 and M115. The desired interval time is input ● to front wiper switch terminal 19 ● from BCM terminal 48 and ● to BCM terminal 49 ● from combination meter terminal 18 (vehicle speed pulse). The desired interval time is input ● to front wiper relay terminal 2, and ● to BCM terminal 128. With power and ground supplied, the front wiper relay is activated. When activated, an intermittent ground is |