Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc p05a0 active grille air shutter "a" stuck on

Subaru Legacy BN/BS (2015-2019) Service Manual / Engine (diagnostics)(h4do) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc p05a0 active grille air shutter "a" stuck on

DTC DETECTING CONDITION:

Detected when two consecutive driving cycles with fault occur.

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION, and Inspection Mode Inspection Mode > PROCEDURE.

STEP	CHECK	YES	NO
1.CHECK ACTIVE GRILLE SHUTTER. Check the area around the active grille shutter louver, louver link and actuator.	Is there any abnormality such as a foreign matter adhered or pinched and a frost-	Remove the foreign matter from the active grille shutter.	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P05A0 ACTIVE GRILLE AIR SHUTTER "A" STUCK ON
2.CHECK ACTIVE GRILLE SHUTTER. Check the area around the active grille shutter louver, louver link and actuator.	Is there any damage in each part of the active grille shutter-	Replace the active grille shutter. Active Grille Shutter	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P05A0 ACTIVE GRILLE AIR SHUTTER "A" STUCK ON
3.CHECK ACTIVE GRILLE SHUTTER. 1) Turn the ignition switch to OFF, and wait for approx. 30 seconds. 2) Turn the ignition switch to ON. 3) Perform operation check for the active grille shutter using the Subaru Select Monitor. NOTE: For detailed operation procedures, refer to the “Active Test”. Active Test	Does the open/close operation finish correctly-	Even if DTC is detected, it has returned to a normal condition at this time. NOTE: In this case, it is assumed that the active grille shutter may have temporarily had a foreign matter adhered/pinched or a frost.	Replace the active grille shutter. Active Grille Shutter

1. OUTLINE OF DIAGNOSIS

Detect that open/close operation of the active grille shutter is disabled due to a foreign matter pinched in or other defects.

Judge as NG if out of specification.

2. COMPONENT DESCRIPTION

(1)	Active grille shutter	(3)	Resistance value (k-)	(4)	Ambient air temperature (°C (°F))
(2)	Ambient sensor

3. EXECUTION CONDITION

Secondary Parameters	Execution condition
Battery voltage	≥ 10.9 V
Command to active grille shutter	Open or Closed

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

5. DIAGNOSTIC METHOD

Judge as NG when the following conditions are established.

Judgment Value

Malfunction Criteria	Threshold Value
Max value of the active grille shutter position sensor (when controlled at power supply ON)	< 70 deg

Time Needed for Diagnosis: 2500 ms

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

Dtc p05a1 active grille air shutter "a" position sensor minimum/maximum stop performance

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