Wiper Motor Power Source 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	Condition	Specified Condition
   LD-13 - LD-8	Engine switch off	Below 1 V
   	Engine switch on (IG)	11 to 14 V
   LD-13 - LD-9	Engine switch off	Below 1 V
   	Engine switch on (IG)	11 to 14 V
   LM-1 - LD-3	Always	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

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

NG → See step   2 

OK → See step   4 

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

   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
   LD-3 - Body ground	Always	Below 1 Ω
   LD-9 - Body ground	Always	Below 1 Ω
   LD-8 - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Main Body ECU LH)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

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

   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
   LD-13 - Body ground	Engine switch off	Below 1 V
   	Engine switch on (IG)	11 to 14 V
   LM-1 - Body ground	Always	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

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

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   4