Subaru BASE - Diagnosis Procedures and Diagnostic Tools; Basic Diagnostic Procedure Flowchart

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5. Diagnosis knowledge

5.1 Basic Daignostic Procedure

1.Perform customer interview

2. Perform basic inspection

3.Check SUBARU Select Monitor communication

4.Check DTC

5 .Perform diagnosis.

Did you interview the

customer?

Is the check

result OK?

Is communication

possible?

Are any DTCs

displayed? (Current

malfunction)

Yes

Repair the faulty part found in

basic inspection

Check the communication circuit.

Record the DTC, time stamp and

freeze frame data.

Finish the diagnosis

Are any DTCs displayed?

(Current malfunction)

When malfunction occurs, please push forward a diagnosis according to a procedure listed in a

repair book.

Yes