WIPER AND WASHER SYSTEM(w/ Rain Sensor) Wiper and Washer Switch Circuit

DESCRIPTION

This circuit detects the state of the windshield wiper switch assembly and sends it to the windshield wiper relay assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

PROCEDURE

1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY

   
   

   1. Inspect the windshield wiper switch assembly Click here.

   
   

   NG

   REPLACE WINDSHIELD WIPER SWITCH ASSEMBLY Click here

   OK

2. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH ASSEMBLY - IG1 NO. 2 RELAY AND BODY GROUND)

   

   Text in Illustration

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

   
   

   1. Disconnect the F11 and F12 windshield wiper switch assembly connectors.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition F12-2 (+B) - Body ground Ignition switch ON 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition F11-2 (EW) - Body ground Always Below 1 Ω

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

3. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH - WINDSHIELD WIPER MOTOR AND WINDSHIELD WIPER RELAY)

   
   

   1. for LHD

      
      

      1. Disconnect the F11 and F12 windshield wiper switch assembly connectors.

      2. Disconnect the A15 windshield wiper motor assembly connector.

      3. Disconnect the F72 windshield wiper relay assembly connector.

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

         Standard Resistance

         Tester Connection Condition Specified Condition F12-3 (+1) - A15-5 (+1) Always Below 1 Ω F12-4 (+2) - A15-3 (+2) Always Below 1 Ω F12-4 (+2) - F72-11 (+2) Always Below 1 Ω F12-1 (+S) - F72-10 (+1) Always Below 1 Ω F12-9 (AUTO) - F72-3 (C1) Always Below 1 Ω F12-7 (VR1) - F72-21 (VR1) Always Below 1 Ω F12-8 (VR2) - F72-8 (VR2) Always Below 1 Ω F12-10 (E) - F72-5 (CO) Always Below 1 Ω F11-3 (WF) - F72-25 (W) Always Below 1 Ω F12-3 (+1) - Body ground Always 10 kΩ or higher F12-4 (+2) - Body ground Always 10 kΩ or higher F12-1 (+S) - Body ground Always 10 kΩ or higher F12-9 (AUTO) - Body ground Always 10 kΩ or higher F12-7 (VR1) - Body ground Always 10 kΩ or higher F12-8 (VR2) - Body ground Always 10 kΩ or higher F12-10 (E) - Body ground Always 10 kΩ or higher F11-3 (WF) - Body ground Always 10 kΩ or higher

   2. for RHD

      
      

      1. Disconnect the F11 and F12 windshield wiper switch assembly connectors.

      2. Disconnect the A15 windshield wiper motor assembly connector.

      3. Disconnect the F72 windshield wiper relay assembly connector.

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

         Standard Resistance

         Tester Connection Condition Specified Condition F12-3 (+1) - A15-1 (+1) Always Below 1 Ω F12-4 (+2) - A15-4 (+2) Always Below 1 Ω F12-4 (+2) - F72-11 (+2) Always Below 1 Ω F12-1 (+S) - F72-10 (+1) Always Below 1 Ω F12-9 (AUTO) - F72-3 (C1) Always Below 1 Ω F12-7 (VR1) - F72-21 (VR1) Always Below 1 Ω F12-8 (VR2) - F72-8 (VR2) Always Below 1 Ω F12-10 (E) - F72-5 (CO) Always Below 1 Ω F11-3 (WF) - F72-25 (W) Always Below 1 Ω F12-3 (+1) - Body ground Always 10 kΩ or higher F12-4 (+2) - Body ground Always 10 kΩ or higher F12-1 (+S) - Body ground Always 10 kΩ or higher F12-9 (AUTO) - Body ground Always 10 kΩ or higher F12-7 (VR1) - Body ground Always 10 kΩ or higher F12-8 (VR2) - Body ground Always 10 kΩ or higher F12-10 (E) - Body ground Always 10 kΩ or higher F11-3 (WF) - Body ground Always 10 kΩ or higher

   
   

   OK

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR