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Home >> Subaru >> 2021 >> Ascent Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System & Washer System >> Auto Wiper System >> Inspection >> Int Operation Time Does Not Change If The Sensitivity Volume Switch Is Operated

Int Operation Time Does Not Change If The Sensitivity Volume Switch Is Operated

  1. CHECK DTC  .

    Using the Subaru Select Monitor, read the DTC of Body integrated unit, combination meter, VDC, and CAN system. Ref. to COMMON (diag)>DIAGNOSTIC TROUBLE CODE (DTC) .

    Is a DTC detected for each System?

    Yes  : Perform a check according to the DTC.

    No  : Go to  2.

  2. CHECK DTC  .

    Read the DTCs for rain/light sensor using the Subaru Select Monitor. Ref. to AUTOMATIC LIGHT AND WIPER (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .

    Is DTC detected?

    Yes  : Perform a check according to the DTC.

    No  : Go to  3.

  3. CHECK SENSITIVITY VOLUME SWITCH OUTPUT SIGNAL OF COMBINATION SWITCH (WIPER)  .

    Perform unit inspection of the combination switch (wiper). Ref. to WIPER AND WASHER SYSTEMS>Combination Switch (Wiper)>INSPECTION>INSPECTION OF SWITCH UNIT .

    Is the inspection result of sensitivity volume switch OK?

    Yes  : Go to  4.

    No  : Replace the switch assembly combination wiper select.

  4. CHECK HARNESS  .
    1. Turn the ignition switch to OFF, and disconnect the connectors of body integrated unit - combination switch (wiper).
    2. Check the harness between body integrated unit and combination switch.

      Connector & terminal 

      (i171) No. 8 - (i69) No. 8:

      (i171) No. 7 - (i69) No. 7:

    Is the inspection result OK?

    Yes  : Go to  5.

    No  : Repair or replace the harness.

  5. CHECK DATA MONITOR (AUTO WIPER SENSITIVITY VOLUME SIGNAL)  .

    Display the data of [Wiper Volume Status] using Subaru Select Monitor. Ref. to AUTOMATIC LIGHT AND WIPER (DIAGNOSTICS)>DATA MONITOR .

    Is the auto wiper sensitivity volume signal displayed properly?

    Yes  : Replace the sensor assembly rain.

    No  : Replace the body integrated unit.