Front Wiper Motor Circuit: Procedure

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the LO operation.
   1. Connect the positive (+) battery lead to terminal A50-5 (+1) of the connector, and the negative (-) battery lead to terminal A50-4 (E), and check that the motor operates at a low speed.
3. Check the HI operation.
   1. Connect the positive (+) battery lead to terminal A50-3 (+2) of the connector, and the negative (-) battery lead to terminal A50-1 (+S), and check that the motor operates at a high speed.

NG → REPLACE WINDSHIELD WIPER MOTOR ASSEMBLY 

OK: Go to next step 

1. Disconnect the A50 windshield wiper motor assembly connector.
   Fig 2: Identifying A50 Windshield Wiper Motor Assembly Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the E11 windshield wiper relay assembly (auto wiper relay) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance

   Tester Connection	Condition	Specified Condition
   A50-1 (+S) - E11-10 (+SM)	Always	Below 1 Ω
   A50-1 (+S) - Body ground	Always	10 kΩ or higher
   A50-3 (+2) - E11-3 (+2)	Always	Below 1 Ω
   A50-3 (+2) - Body ground	Always	10 kΩ or higher
   A50-4 (E) - Body ground	Always	Below 1 Ω
   A50-5 (+1) - E11-2 (+1)	Always	Below 1 Ω
   A50-5 (+1) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE