WIPER AND WASHER SYSTEM(w/ Rain Sensor) Headlight Cleaner Switch Circuit

DESCRIPTION

This circuit detects the conditions of the headlight cleaner switch.

• Headlight cleaner switch signal

• Headlight operating signal

• Daytime running light operating signal

WIRING DIAGRAM

PROCEDURE

1. CHECK HEADLIGHT ASSEMBLY (LO BEAM)

   
   

   1. Check that the headlights illuminate in LO beam.

      OK
      Headlights illuminate in LO beam

   
   

   NG

   GO TO LIGHTING SYSTEM Click here

   OK

2. INSPECT HEADLIGHT CLEANER SWITCH ASSEMBLY

   
   
   1. 

      *1	Component without harness connected: (Headlight Cleaner Switch Assembly)

      Disconnect the G4 cleaner switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition 8 (B) - 5 (L) Headlight cleaner switch off 10 kΩ or higher 8 (B) - 5 (L) Headlight cleaner switch on Below 1 Ω

   
   

   NG

   REPLACE HEADLIGHT CLEANER SWITCH ASSEMBLY Click here

   OK

3. CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER SWITCH ASSEMBLY - HEADLIGHT CLEANER CONTROL RELAY AND MAIN BODY ECU)

   
   

   1. Disconnect the headlight cleaner control relay connector.

      

      *1	Front view of wire harness connector: (to Headlight Cleaner Control Relay)
      *2	Front view of wire harness connector: (to Headlight Cleaner Switch)
      *3	Front view of wire harness connector: (to Main Body ECU [Cowl Side Junction Block LH])

   2. Disconnect the G4 switch connector.

   3. Disconnect the 2D main body ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition 2 (H) - G4-8 (B) Always Below 1 Ω G4-5 (L) - 2D-23 (HRLY) 2 (H) - Body ground Always 10 kΩ or higher G4-8 (B) - Body ground G4-5 (L) - Body ground 2D-23 (HRLY) - Body ground

   
   

   OK

   REPLACE HEADLIGHT CLEANER CONTROL RELAY Click here

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR