Front Wiper Motor Circuit: Procedure

1. Remove the windshield wiper motor assembly. Refer to REMOVAL .
   Fig 1: Inspecting Windshield Wiper Motor Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check low speed operation.
   1. Connect an auxiliary battery positive (+) lead to terminal 5 (+1) and a negative (-) lead to terminal 4 (E), and check that the motor operates at low speed.

      OK

      Motor operates at low speed.

3. Check high speed operation.
   1. Connect an auxiliary battery positive (+) lead to terminal 3 (+2) and a negative (-) lead to terminal 4 (E), and check that the motor operates at high speed.

      OK

      Motor operates at high speed.

      TEXT IN ILLUSTRATION
      
      

      *a	Component without harness connected (Windshield Wiper Motor Assembly)

NG → See step   5 

OK: Go to next step 

1. Disconnect the A32 windshield wiper motor connector.
   Fig 2: Identifying A32 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   A32-2 (B) - Body ground	Power switch on (IG)	11 to 14 V

3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A32-4 (E) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Windshield Wiper Motor Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the H75 windshield wiper relay assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A32-5 (+1) - H75-2 (+1)	Always	Below 1 Ω
   A32-5 (+1) - Body ground	Always	10 kΩ or higher
   A32-3 (+2) - H75-3 (+2)	Always	Below 1 Ω
   A32-3 (+2) - Body ground	Always	10 kΩ or higher
   A32-1 (+S) - H75-10 (+SM)	Always	Below 1 Ω
   A32-1 (+S) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   4