Wiper Switch (HI Speed) Circuit: Procedure

1. Measure the voltage according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   Q2-11 (2S) - Body ground	Wiper switch not in HI position	11 to 14 V
   Q2-11 (2S) - Body ground	Wiper switch in HI position	Below 1 V

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Main Body ECU LH)

NG → See step   2 

OK → See step   5 

1. Remove the windshield wiper switch assembly. Refer to REMOVAL [08/2012 - ]

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   3 (2S) - 5 (E)	Wiper switch in HI position	Below 1 Ω
   3 (2S) - 5 (E)	Wiper switch not in HI position	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Windshield Wiper Switch Assembly)

NG → See step   6 

OK: Go to next step 

1. Disconnect the J26 windshield wiper switch assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J26-5 (E) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Windshield Wiper Switch Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the Q2 main body ECU LH (cowl side junction block LH) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J26-3 (2S) - Q2-11 (2S)	Always	Below 1 Ω
   Q2-11 (2S) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Windshield Wiper Switch Assembly)
   *2	Front view of wire harness connector (to Main Body ECU LH)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   5