WIPER AND WASHER SYSTEM(w/ Rain Sensor) Rain Sensor Circuit

DESCRIPTION

The windshield wiper relay assembly receives a signal from the rain sensor to control the auto wiper system.

WIRING DIAGRAM

*a	LIN Communication Line
*b	Rain Sensor
*c	Windshield Wiper Relay Assembly

PROCEDURE

1. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM

   
   

   1. Check that the LIN communication system is normal. Click here

      OK
      LIN communication system is normal.

   
   

   NG

   GO TO LIN COMMUNICATION SYSTEM Click here

   OK

2. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER RELAY - RAIN SENSOR)

   

   Text in Illustration

   *1	Front view of wire harness connector (to Windshield Wiper Relay Assembly)
   *2	Front view of wire harness connector (to Rain Sensor)

   
   

   1. Disconnect the H56 relay connector.

   2. Disconnect the Q5 sensor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition H56-13 (SIG) - Q5-3 (SIG) Always Below 1 Ω Q5-3 (SIG) - Body ground Always 10 kΩ or higher H56-7 (ES) - Q5-2 (ES) Always Below 1 Ω Q5-2 (ES) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

3. CHECK WINDSHIELD WIPER RELAY ASSEMBLY

   
   
   1. 

      Text in Illustration

      *1	Component with harness connected (Windshield Wiper Relay Assembly)

      Remove the wiper relay with its connector still connected (See page for LHD, Click here for RHD).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition H56-13 (SIG) - H56-7 (ES) Ignition switch ON 11 to 14 V

      Result

      Result	Proceed to
      OK	A
      NG (for LHD)	B
      NG (for RHD)	C

   
   

   A

   REPLACE RAIN SENSOR Click here

   B

   REPLACE WINDSHIELD WIPER RELAY ASSEMBLY Click here

   C

   REPLACE WINDSHIELD WIPER RELAY ASSEMBLY Click here