Subaru Crosstrek manuals

Subaru Crosstrek Service Manual: Basic diagnostic procedure Procedure

HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS) > Basic Diagnostic Procedure



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.



1) Prepare the tools. General Description > PREPARATION TOOL">

2) Perform the pre-inspection. General Description > INSPECTION">

Is any malfunction found in pre-inspection?

Fix the malfunction found in pre-inspection, and go to the next inspection step. Basic Diagnostic Procedure > PROCEDURE">Go to Step 2.

Basic Diagnostic Procedure > PROCEDURE">Go to Step 2.


1) Under the failure condition, leave the vehicle for one minute or more.

2) Read the DTC using Subaru Select Monitor. Read Diagnostic Trouble Code (DTC)">


If the communication function of the Subaru Select Monitor cannot be executed properly, check the communication circuit. 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”. General Description > CAUTION">

Is DTC displayed?

List of Diagnostic Trouble Code (DTC) > LIST">

Refer to Diagnostics with Phenomenon. Diagnostics with Phenomenon > INSPECTION">

HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS) > Read Current DataOPERATION1. On «Start» display, select «Diagnosis».2. On «Vehicle selection» display, input the target vehicle information and select ...

Clear memory mode Operation
HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS) > Clear Memory ModeOPERATION1. On «Start» display, select «Diagnosis».2. On «Vehicle selection» display, input the target vehicle information and select ...

Other materials:

Waxing and polishing
Always wash and dry the vehicle before waxing and polishing. Use a good quality polish and wax and apply them according to the manufacturer's instructions. Wax or polish when the painted surface is cool. Be sure to polish and wax the chrome trim, as well as the painted surfaces. Loss of ...

Dtc b278d id code box judgment circuit
KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B278D ID CODE BOX JUDGMENT CIRCUITDTC detecting condition:• When ID code box setting is set to OFF, ID code box ON input is detected.• When ID code box setting is se ...

Note Note
NOTENOTEThis information will improve the efficiency of maintenance and assure the sound work.1. CLEANING• Perform the operation in a clean location and use extra caution in dust proofing.• Clean the items (except for assembly components) with steam, etc. before disassembly. During steam ...

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