Basic Diagnostic Procedure: Procedure
NOTE:
When the sunload sensor check is performed indoors or in the shade, it could be diagnosed as sensor having an open circuit. Always perform the inspection in direct sunlight.
- START INSPECTIONS.
- Prepare the tools. Refer to HVAC SYSTEM (HEATER, VENTILATOR AND A/C)>GENERAL DESCRIPTION>PREPARATION TOOL .
- Perform the pre-inspection. Refer to HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)>GENERAL DESCRIPTION>INSPECTION .
Is the check result OK?
Yes: Go to 2.
No Fix the malfunction found in pre-inspection, and go to the next inspection step. Go to 2.
- CHECK DTC.
- Under the failure condition, leave the vehicle for one minute or more.
- Read the DTC using Subaru Select Monitor. Refer to HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)>READ DIAGNOSTIC TROUBLE CODE (DTC) .
NOTE:- If the communication function of the Subaru Select Monitor cannot be executed properly, check the communication circuit. Refer to HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE FOR SUBARU SELECT MONITOR COMMUNICATION>COMMUNICATION FOR INITIALIZING IMPOSSIBLE .
- Record the time stamp and the freeze frame data recorded together with the DTC. For time stamp, refer to "LAN SYSTEM". Refer to LAN SYSTEM (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION>TIME STAMP .
Are any DTCs displayed?
Yes Perform the diagnosis for the displayed DTCs. Refer to HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)>LIST OF DIAGNOSTIC TROUBLE CODE (DTC)>LIST . after diagnosis, Go to 3.
No Refer to Diagnostics with Phenomenon. Refer to HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>INSPECTION .
- PERFORM DIAGNOSIS.
- Perform the Clear Memory Mode.
- Perform the Inspection Mode. Refer to HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)>INSPECTION MODE .
Are any DTCs displayed?
Yes Perform the diagnosis for the displayed DTCs.
No Finish the diagnosis.