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Home >> Toyota >> 2008 >> Corolla LE, Automatic >> Repair and Diagnosis >> Electrical >> Body Electrical >> OEM System Circuits >> Wiper and Washer System >> System Outline

System Outline

When the ignition SW is turned on, current flows to TERMINAL 8 of the wiper and washer SW and TERMINAL 2 of the front wiper motor through the WIPER fuse, and current also flows to TERMINAL 2 of the washer motor through the WASHER fuse.

  1. Low Speed Position 

    If the wiper SW is turned to the LO position, current flows from TERMINAL 8 of the front wiper and washer SW out TERMINAL 7 to TERMINAL 1 of the front wiper motor then out TERMINAL 5 to GROUND and causes to the front wiper motor to run at low speed.

  2. High Speed Position 

    If the wiper SW is turned to the HI position, current flows from TERMINAL 8 of the front wiper and washer SW out TERMINAL 9 to TERMINAL 4 of the front wiper motor then out TERMINAL 5 to GROUND and causes to the wiper motor to run at high speed.

  3. INT Position 

    If the wiper SW is turned to the INT position, the relay activates, and the current which is connected by the relay function flows in TERMINAL 8 of the front wiper and washer SW and out TERMINAL 5 to GROUND. This flow of current operates the intermittent circuit and current flows from TERMINAL 8 of the front wiper and washer SW, out TERMINAL 7 to TERMINAL 1 of the front wiper motor and out TERMINAL 5 to GROUND.

    The intermittent operation is controlled by the charge/discharge function of the condenser installed in the relay, and the intermittent time is controlled by a time control SW (w/ intermittent volume SW) to change the charging time of the condenser.

  4. MIST Position 

    If the wiper SW is turned to the MIST position, current flows in TERMINAL 8 of the front wiper and washer SW out TERMINAL 7 to TERMINAL 1 of the front wiper motor and out TERMINAL 5 to GROUND and causes water to be sprayed onto the windscreen and also causes the front wiper motor to run at low speed.

  5. Washer Continuous Operation 

    If the washer SW is turned on, current flows in TERMINAL 2 of the washer motor, out TERMINAL 1 to TERMINAL 4 of the front wiper and washer SW then out TERMINAL 5 to GROUND and causes the washer motor to run, and the window washer jets operate. This causes current to flow to the washer continuous operation circuit in TERMINAL 8 of the front wiper and washer SW then out TERMINAL 7 to TERMINAL 1 of the wiper and motor and out TERMINAL 5 to GROUND and the washer operates continuously.