Without Keyless Access With Push Button Start System

CAUTION: When the body integrated unit (except for C0 and C5 models) or the immobilizer control module (C0 and C5 models) is replaced, registration of the immobilizer system is required.
For details, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume.

PERFORM CUSTOMER INTERVIEW .
Ask the customer when and how the trouble occurred using the Check List for Interview. Ref. to Immobilizer (Diagnostics)>Check List For Interview .

Did you interview the customer?

Yes : Go to 2 .

No : Perform the interview, and Go to 2 .
CONFIRM NUMBER OF REGISTERED IMMOBILIZER KEY .
Confirm the number of registered immobilizer key. For details, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume.

Is the number of registration 0?

Yes : Register the immobilizer system.

No : Go to 3 .
CHECK SECURITY INDICATOR LIGHT .
1. Remove the ignition key from ignition switch.
2. Wait at least 60 seconds.
  Does the security indicator light blink?
  
  Yes : Go to 4 .
  
  No : Check the security indicator light circuit. Ref. to Immobilizer (Diagnostics)>Warning Light Illumination Pattern .
CHECK KEY SWITCH .
Insert the ignition key in the ignition switch. (OFF or ACC) Does the security indicator light remain blinking?

Yes : Check the key switch circuit. Ref. to IMMOBILIZER (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>INSPECTION>CHECK KEY SWITCH CIRCUIT .

No : Go to 5 .
CHECK SECURITY INDICATOR LIGHT .
Check the security indicator light status in the condition of step 4.

Does the security indicator light go off?

Yes : Go to 8 .

No : Go to 6 .
CHECK SECURITY INDICATOR LIGHT .
Turn the ignition switch to ON.

Does the security indicator light go off?

Yes : Go to 8 .

No : Go to 7 .
CHECK ENGINE START .
Turn the ignition switch to START.

Does the starter operate?

Yes : Check the LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .

No : Go to 9 .
CHECK ENGINE START .
Turn the ignition switch to START.

Does the engine start?

Yes : Immobilizer system is normal.

No : Go to 10 .
CHECK DTC .
Read the following DTCs using Subaru Select Monitor. Ref. to BODY CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) . Ref. to Immobilizer (Diagnostics)>Diagnostic Trouble Code (DTC) .
- Body Control (except for C0 and C5 models)
- Immobilizer (for C0 and C5 models)
NOTE: If the communication function of the Subaru Select Monitor cannot be executed properly, check the communication circuit. Ref. to Immobilizer (Diagnostics)>Diagnostic Procedure for Subaru Select Monitor Communication .

Are any DTCs displayed?

Yes : Record the DTC, time stamp and freeze frame data, and Go to 11 .

No : Replace the body integrated unit (except for C0 and C5 models) or the immobilizer control module (C0 and C5 models). Ref. to BODY CONTROL/COMMUNICATION SYSTEM>BODY INTEGRATED UNIT . Ref. to SECURITY AND LOCKS>IMMOBILIZER CONTROL MODULE .
CHECK DTC .
Read the DTC of [Engine Control System] using the Subaru Select Monitor. Ref. to ENGINE (DIAGNOSTICS) (H4DO)>DIAGNOSTIC TROUBLE CODE (DTC) .

NOTE: If the communication function of the Subaru Select Monitor cannot be executed properly, check the communication circuit. Ref. to Immobilizer (Diagnostics)>Diagnostic Procedure for Subaru Select Monitor Communication .

Are any DTCs displayed? (Current malfunction)

Yes : Record the DTC, time stamp and freeze frame data, and Go to 11 .

No : Perform the diagnosis for engine system. Ref. to ENGINE (DIAGNOSTICS) (H4DO)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE .
CHECK FREEZE FRAME DATA .
Check the freeze frame data. Ref. to Immobilizer (Diagnostics)>Freeze Frame Data .

Are the data recorded?

Yes : Record the data. Go to 12 .

No : Go to 12 .
CHECK DTC .
Check the displayed DTC.

Are DTCs irrelevant to the immobilizer displayed? (Current malfunction)

Yes : Perform the diagnosis according to DTCs irrelevant to the immobilizer first.

No : Go to 13 .
PERFORM DIAGNOSIS .
1. Perform the diagnosis for the displayed DTCs. Ref. to IMMOBILIZER (DIAGNOSTICS)>Diagnostic Trouble Code (DTC)>LIST .
2. Repair or replace the cause of trouble.
3. Using the Subaru Select Monitor, perform the following clear memory. Ref. to COMMON (DIAG)>CLEAR MEMORY .
  - Body Control (except for C0 and C5 models)
  - Immobilizer (for C0 and C5 models)
4. Execute the inspection mode. Ref. to Immobilizer (Diagnostics)>Inspection Mode .
5. Read the following DTCs using Subaru Select Monitor. Ref. to BODY CONTROL (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) . Ref. to Immobilizer (Diagnostics)>Diagnostic Trouble Code (DTC) .
  - Body Control (except for C0 and C5 models)
  - Immobilizer (for C0 and C5 models)
  Are any DTCs displayed? (Current malfunction)
  
  Yes : Repeat step 13 until DTC is not shown.
  
  No : Finish the diagnosis.