WIPER AND WASHER SYSTEM ECU Power Source Circuit

DESCRIPTION

This circuit provides power to the front wiper motor and operates the front controller.

WIRING DIAGRAM

A000VT4E14

PROCEDURE


  1. INSPECT FUSE (WIP)


    1. Remove the WIP fuse from the engine room No. 2 relay block.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      WIP fuse Always Below 1 Ω

    NG

    REPLACE FUSE

    OK

  2. CHECK HARNESS AND CONNECTOR (FRONT CONTROLLER - BATTERY)


    1. A000V5AE03
      *1 Front view of wire harness connector: (to Front Controller)

      Disconnect the A51 front controller connector.

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

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      A51-2 (WIG) - Body ground Power switch ON (IG) 11 to 14 V
      A51-2 (WIG) - Body ground Power switch OFF Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A000UEDE03
      *1 Front view of wire harness connector: (to Front Controller)

      Disconnect the A50 ECU connectors.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      A50-2 - Body ground Always Below 1 Ω

    OK

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    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR