WIPER AND WASHER SYSTEM Washer Fluid Level Warning Switch Circuit

DESCRIPTION

The front controller receives washer fluid level warning switch condition (on or off) information, and sends it through multiplex communication lines to the combination meter.

The combination meter receives this information, and turns on the washer fluid level warning light when the washer fluid level becomes low.

WIRING DIAGRAM

A016025E01

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Body / Body No. 5 / Data List.

    5. Read the display on the intelligent tester.

      Body No. 5 (Front Controller)
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Washer Level Switch Washer fluid level switch / ON or OFF

      ON: Washer jar is empty

      OFF: Washer jar is full

      		 -

    NG

    INSPECT LEVEL WARNING SWITCH ASSEMBLY Click here

    OK

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

  2. INSPECT LEVEL WARNING SWITCH ASSEMBLY

    Tech Tips

    The following check should be performed with level warning switch assembly installed to the washer jar.


    1. Fill the washer jar with washer fluid.

    2. A015ZA3E01

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (S) - 2 (E) Fluid volume is more than 700 to 900 ml 10 kΩ or higher
      1 (S) - 2 (E) Fluid volume is less than 700 to 900 ml Below 1 Ω

    NG

    REPLACE LEVEL WARNING SWITCH ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (LEVEL WARNING SWITCH - FRONT CONTROLLER AND BODY GROUND)


    1. A0160BHE07

      Disconnect the A1 level warning switch assembly connector.

    2. Disconnect the 2F front controller connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2F-7 - A1-1 (S) Always Below 1 Ω
      A1-2 (E) - Body ground Always Below 1 Ω
      2F-7 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT CONTROLLER (MULTIPLEX NETWORK BODY ECU)