Basic Diagnostic Procedure: Procedure

CAUTION:

Subaru Select Monitor is required for reading DTC, performing diagnosis and reading current data.
Remove foreign matter (dust, water, oil, etc.) from the body integrated unit connector during removal and installation.
Registration of immobilizer may be needed after the replacement of control modules, etc. For detailed procedure, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume.

NOTE:

To check harness for open or short circuits, shake the suspected trouble spot or connector.
Check List for Interview Ref. to BODY CONTROL SYSTEM (DIAGNOSTICS)>Check List for Interview .

CHECK PRE-INSPECTION .
Ask the customer when and how the trouble occurred using the interview check list. Ref. to BODY CONTROL SYSTEM (DIAGNOSTICS)>Check List for Interview .

Did you interview the customer?

Yes: Go to 2 .

No: Interview the customer.
BASIC INSPECTION .
Check components which might affect body control. Ref. to BODY CONTROL SYSTEM (DIAGNOSTICS)>General Description>INSPECTION .

Is the check result of the component that might influence the body control problem OK?

Yes: Go to 3 .

No: Repair or replace each component.
CHECK DTC .
1. Read the DTC. Ref. to BODY CONTROL SYSTEM (DIAGNOSTICS)>Read Diagnostic Trouble Code (DTC) .
  NOTE: If the communication function of the Subaru Select Monitor cannot be executed properly, check the communication circuit. Ref. to LAN SYSTEM (DIAGNOSTICS)>SUBARU SELECT MONITOR>COMMUNICATION FOR INITIALIZING IMPOSSIBLE .
2. Record all DTCs, time stamp and freeze frame data.
  NOTE: For time stamp, refer to "LAN SYSTEM". Ref. to LAN SYSTEM (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION>TIME STAMP .
Is DTC displayed on Subaru Select Monitor?

Yes: Perform the diagnosis for the displayed DTCs. Ref. to BODY CONTROL SYSTEM (DIAGNOSTICS)>List of Diagnostic Trouble Code (DTC) . Go to 6.

No: Go to 4 .
CHECK PHENOMENON LIST .
Check the "Phenomenon List". Ref. to BODY CONTROL SYSTEM (DIAGNOSTICS)>Diagnostics with Phenomenon .

Is there a symptom that corresponds in the phenomenon list?

Yes: Perform diagnosis according to the procedures in the phenomenon list.

No: Go to 5 .
PERFORM GENERAL DIAGNOSTICS .
Inspect using the "General Diagnostic Table". Ref. to BODY CONTROL SYSTEM (DIAGNOSTICS)>General Diagnostic Table .

Is the check result OK?

Yes: The body control system is normal.

No: Go to 6 .
PERFORM DIAGNOSIS .
1. Perform the Clear Memory Mode. Ref. to BODY CONTROL SYSTEM (DIAGNOSTICS)>Clear Memory Mode .
2. Perform the Inspection Mode. Ref. to BODY CONTROL SYSTEM (DIAGNOSTICS)>Inspection Mode .
Is DTC displayed on Subaru Select Monitor?

Yes: Perform the diagnosis for the displayed DTCs. Ref. to BODY CONTROL SYSTEM (DIAGNOSTICS)>List of Diagnostic Trouble Code (DTC) .

No: Finish the diagnosis.