1. Disconnect the negative battery cable..
2. Remove the front bumper..
3. Verify that continuity between the washer fluid-level sensor terminals is as indicated in the table.

If not as specified, replace the washer fluid-level sensor.

Windshield Washer Nozzle Removal/Installation
Washer Fluid Level Sensor Removal/InstallationCleaning and protecting the vehicle exterior
To preserve the appearance and long-term durability of the Subaru Solterra,
follow these recommended care procedures to keep the exterior in optimal condition:
Cleaning instructions
Start from the upper sections of the Subaru Solterra and gradually work
downward, thoroughly rinsing the bod ...
Vehicle Speed Sensor (VSS) Inspection [FS5 A EL]
On-Vehicle Inspection
1. Inspect the power supply circuit for the VSS.
a. Remove the insulator from the transaxle.
b. Disconnect the VSS connector.
c. Switch the ignition to ON (engine off).
d. Measure the voltage at VSS connector terminal A (harness-side).
If there is a ...
Check Valve (One Way) Inspection [Mzr 2.3 Disi Turbo]
1. Disconnect the vacuum hose connected between the check valve and the purge
solenoid valve from the purge solenoid valve..
2. Disconnect the vacuum hose connected between the check valve (one-way) and
the intake manifold from the intake manifold..
3. Blow through the check valve (one-way) ...