Washer Fluid Level Sensor Diagnostics (12-134-12)

Publication date: 2012-07-12
Reference number: 12-134-12

WASHER FLUID LEVEL SENSOR DIAGNOSTICS

TECHNICAL SERVICE BULLETIN

Reference Number(s): 12-134-12, Date of Issue: July 12, 2012

SUBARU:

2010MY and Later Legacy & Outback; 2012MY Impreza; 2006MY and later Tribeca

The purpose of this Service Bulletin is to explain the inspection, diagnosis and replacement procedures for the washer fluid level sensor.

Release the retaining clips and lower the L/F splash guard to gain access to the washer fluid tank and fluid level sensor assembly.
Check for evidence of poor contact of the washer fluid level sensor wiring harness connector.
Does the low washer fluid warning light illuminate after draining the washer fluid? If YES, does the low washer fluid warning light go off after refilling the washer fluid?
- YES → Fluid level sensor operation is normal.
- NO → Proceed to step 4.
Remove the wiring harness connector from washer fluid level sensor then measure the voltage of the vehicle-side connector using a DVOM (digital volt/ohm meter).
Is the voltage approx. 8.5 V or more?
- YES → Proceed to step 5.
- NO → Check the harness carefully and verify the I/O (input/output) signals to the combination meter and/or integrated unit as specified in the appropriate Service Manual. If harness and signal checks are all within specification, combination meter and/or integrated unit replacement may be necessary.
Does the washer fluid indicator in the combination meter illuminate if you connect the terminals of the washer fluid level sensor wiring harness connector together?
- YES → Proceed to step 6.
- NO → Check the harness carefully and verify the I/O signals to the combination meter and/or integrated unit as specified in the appropriate Service Manual. If harness and signal checks are all within specification, combination meter and/or integrated unit replacement may be necessary.

Using a DVOM, measure the resistance of the washer fluid level sensor as shown.

Amount of Washer Fluid in the Tank	Resistance Standard
Empty (Indicator "ON")	Less than 10Ω
Fluid Remaining (Indicator "OFF")	1 MΩ

Is the measured resistance value within the standard?

YES → Fluid level sensor operation is normal.
NO → Replace the washer tank assembly as the fluid level sensor is not serviceable separately. Be sure to retain any re-usable fluid in a clean container.

LABOR DESCRIPTION	LABOR OPERATION	FAIL CODE	LABOR TIME
Washer Fluid Level Sensor R&R Includes testing & diagnosis	A830-122	UNW 43	0.7