Section 976 (Wiper & Washer System): Inspection

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

Low Speed: INSPECT WIPER MOTOR OPERATION
Connect the positive (+) lead from the battery to terminal 3 and the negative (-) lead to terminal 1, and check that the motor operates at low speed.

If operation is not as specified, replace the motor.

Fig 1: Inspecting Wiper Motor Operation
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
High Speed: INSPECT WIPER MOTOR OPERATION
Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1, and check that the motor operates at high speed.

If operation is not as specified, replace the motor.

Fig 2: Inspecting Wiper Motor Operation - High Speed
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Stopping at Stop Position: INSPECT WIPER MOTOR OPERATION
1. Operate the motor at low speed and stop the motor operation anywhere except at the stop position by disconnecting positive (+) lead from terminal 3.
  
  Fig 3: Inspecting Wiper Motor Operation - Stopping At Stop Position (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect terminals 3 and 5.
3. Connect the positive (+) lead from the battery to terminal 6 and the negative (-) lead to terminal 1, and check that the motor stops running at the stop position after the motor operates again.
  If operation is not as specified, replace the motor.
  
  Fig 4: Inspecting Wiper Motor Operation - Stopping At Stop Position (2 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT WASHER MOTOR OPERATION
Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1, and check that the motor operates.

NOTE: This test must be performed quickly (within 20 seconds) to prevent the coil from burning out.

If operation is not as specified, replace the motor.

Fig 5: Inspecting Washer Motor Operation
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002