WIPER AND WASHER SYSTEM Washer Fluid Level Warning Switch Circuit

DESCRIPTION

The front light ECU receives washer fluid level warning switch information, and sends it through CAN line to the No. 1 meter ECU sub-assembly. The No. 1 meter ECU sub-assembly receives this information, and turns on the washer fluid level warning switch when the washer fluid becomes low.

WIRING DIAGRAM

A001EAEE01

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (WASHER FLUID LEVEL WARNING SWITCH)


    1. Check the Data List for proper functioning of the washer fluid level warning switch.

      Front light ECU:
      Tester Display Measurement Item / Range Normal Condition Diagnostic Note
      WASHER LVL SW Washer fluid level warning switch / ON or OFF

      ON: Washer jar and tank is empty

      OFF: Washer jar and tank is full

      		 -
      OK
      The display is as specified in the normal condition.

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

  2. INSPECT WASHER FLUID LEVEL WARNING SWITCH


    1. A0019UYE06
      *1 Component without harness connected: (switch)

      Disconnect the A2 switch connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      1 (SLR1) - 2 (E) Washer jar and tank is empty Below 1 Ω
      1 (SLR1) - 2 (E) Washer jar and tank is full 10 kΩ or higher

    NG

    REPLACE WASHER FLUID LEVEL WARNING SWITCH Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (WARNING SWITCH - LIGHT ECU AND BODY GROUND)


    1. Disconnect the A2 switch connector.

      A001BCUE01
      *1 Front view of wire harness connector: (to Warning Switch)
      *2 Front view of wire harness connector: (to Front Light ECU)

    2. Disconnect the A52 ECU connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      A2-1 (SLR1) - A52-13 (WLVL) Always Below 1 Ω
      A2-2 (E) - Body ground Always Below 1 Ω
      A2-1 (SLR1) - Body ground Always 10 kΩ or higher

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR