Wiper And Washer System Front Wiper Motor Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST BY INTELLIGENT TESTER

INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY

CHECK WIRE HARNESS (WINDSHIELD WIPER MOTOR ASSEMBLY - COWL SIDE JUNCTION BLOCK LH)

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

1. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG) and turn the intelligent tester's main switch ON.
   

3. Select the item below in the Active Test and then check that the front wiper motor operates.
   
   

   Cowl side junction block ECU LH:

   Item	Test Details	Diagnostic Note
   WIPER MOT (HI)	Front wiper motor HI operation ON / OFF	-
   WIPER MOT (LO)	Front wiper motor LO operation ON / OFF	-

   OK:

   Front wiper motor operates.
   

1. Remove the windshield wiper motor (Click here).
   

2. Check the LO operation.
   

   1. LHD:
      Connect the positive (+) battery lead to terminal 5 (+1) of the connector, and the negative (-) battery lead to terminal 4 (E), and check that the motor operates at low speed.
      Connect the positive (+) battery lead to terminal 3 (+2) of the connector, and the negative (-) battery lead to terminal 1 (S), and check that the motor operates at high speed.
      

   2. RHD:
      Connect the positive (+) battery lead to terminal 1 (+1) of the connector, and the negative (-) battery lead to terminal 5(E), and check that the motor operates at low speed.
      Connect the positive (+) battery lead to terminal 4 (+2) of the connector, and the negative (-) battery lead to terminal 3 (S), and check that the motor operates at high speed.
      

1. Disconnect the A20 wiper motor connector.
   

2. Disconnect the A32 ECU LH connector.
   

3. Measure the resistance of the wire harness side connectors.
   

   HINT:

   1. *1: LHD
      
   2. *2: RHD
      

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   PK-9 (WIG) - A20-2 (B)	Always	Below 1 Ω
   A32-1 (S/S) - A20-1*1 (+1)	Always	Below 1 Ω
   A32-1 (S/S) - A20-5*2 (+1)
   A32-2 (+2) - A20-4*1 (+2)	Always	Below 1 Ω
   A32-2 (+2) - A20-3*2 (+2)
   A32-3 (S/M) - A20-3*1 (S)	Always	Below 1 Ω
   A32-3 (S/M) - A20-1*2 (S)
   A20-3*1 (S) - Body ground	Always	10 kΩ or higher
   A20-1*2 (S) - Body ground
   A20-2 (B) - Body ground	Always	10 kΩ or higher
   A20-4*1 (+2) - Body ground	Always	10 kΩ or higher
   A20-3*2 (+2) - Body ground
   A20-5*1 (E) - Body ground	Always	10 kΩ or higher
   A20-4*2 (E) - Body ground
   A20-1*1 (+1) - Body ground	Always	10 kΩ or higher
   A20-5*2 (+1) - Body ground