Basic Diagnostic Procedure

CHECK DTC.
Read the DTC of body integrated unit using Subaru Select Monitor.

NOTE: For detailed operation procedures, refer to "Application help".

Is DTC displayed?

Yes: Perform the diagnosis for the displayed DTCs.

No: Go to 2.
CHECK DATA MONITOR.
Display the following items using Subaru Select Monitor.
- «Driver's door SW input»
- «P-door SW input»
- «Rear right door SW input»
- «Rear left door SW input»
- «R Gate SW input»
- «Hood SW»
Does the display switch between OFF ↔ ON when each door, trunk lid, or front hood is opened/closed?

Yes: Go to 3.

No: Check the following parts.
- Door switches Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION>CHECK DOOR SWITCH .
- Trunk lid latch switch Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION>CHECK DOOR SWITCH .
- Hood switch Refer to SECURITY AND LOCKS>SECURITY SYSTEM>INSPECTION>CHECK HOOD SWITCH .
CHECK SECURITY SYSTEM SETTINGS.
Check the settings of the security system using the Subaru Select Monitor.

Is the setting of the security system ON?

Yes: Go to 5.

No: Go to 4.
CHANGE SETTING OF SECURITY SYSTEM.
Change the setting of security system to ON using Subaru Select Monitor. Refer to SECURITY AND LOCKS>SECURITY SYSTEM>INSPECTION>SECURITY SYSTEM ON/OFF SETTING .

Is setting change completed correctly?

Yes: Go to 5.

No: Replace the body integrated unit. Refer to SECURITY AND LOCKS>BODY INTEGRATED UNIT .
CHECK KEYLESS SYSTEM OPERATION.
Check the operation of the keyless entry system or keyless access system.

Does the keyless entry system or keyless access system operate normally?

Yes: Go to 6.

No: Check the keyless entry system or keyless access system.
- Keyless entry system: Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION .
- Keyless access system: Refer to KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)>GENERAL DESCRIPTION>CAUTION>KEYLESS ACCESS WITH PUSH BUTTON START .
CHECK SECURITY SYSTEM OPERATION.
1. Remove the key from ignition switch or turn the ignition switch to OFF, and close all doors, trunk lid and front hood.
2. Check the status of security indicator light.
3. Press the LOCK button of the keyless transmitter or access key.
4. Check the security indicator light blinking patterns.
  Is the security indicator light blinking patterns as follows?
  1. Before pressing the LOCK button: Blinks once within 3 seconds
  2. After pressing the LOCK button
    - When monitoring lag is set to 0 seconds: Blinks twice every 0.5 seconds at 2 second intervals.
    - When monitoring lag is set to 30 seconds: Blinks once every 0.4 seconds for 30 seconds, then blinks twice every 0.5 seconds at 2 second intervals.
      Yes: Go to 7.
      
      No: Check the security indicator light. Refer to SECURITY AND LOCKS>SECURITY SYSTEM>INSPECTION>CHECK SECURITY INDICATOR LIGHT CIRCUIT .
CHECK SECURITY ALARM OPERATION.
1. Check that the security indicator light blinks twice every 0.5 seconds at 2 second intervals.
2. Operate the driver's door lock switch to the UNLOCK side.
3. Open one of the doors.
  Does the security alarm operate, the horn sound and the hazard light blink?
  
  Yes: Go to 8.
  
  No: Check the following parts.
  - Horn: Refer to SECURITY AND LOCKS>SECURITY SYSTEM>INSPECTION>CHECK HORN .
  - Hazard light: Refer to SECURITY AND LOCKS>SECURITY SYSTEM>INSPECTION>CHECK HAZARD LIGHT OPERATION .
CHECK DEACTIVATION OF SECURITY ALARM.
Press any button of the transmitter or access key while the security alarm is operating.

Do the horn sound and the blinking of the hazard light stop?

Yes: Go to 9.

No: Replace the body integrated unit. Refer to SECURITY AND LOCKS>BODY INTEGRATED UNIT .
CHECK IMPACT SENSOR (DEALER OPTION).
Check the sensibility of impact sensor. Refer to SECURITY AND LOCKS>IMPACT SENSOR>ADJUSTMENT>CHECK IMPACT SENSOR .

Is the sensibility set properly?

Yes: Go to 10.

No: Adjust the sensitivity. Refer to SECURITY AND LOCKS>IMPACT SENSOR>ADJUSTMENT>IMPACT SENSITIVITY ADJUSTMENT .
CHECK MANUAL SETTING CHANGE OF SECURITY SYSTEM.
1. Press the UNLOCK button of the keyless transmitter or access key.
2. Change the setting of security system. Refer to SECURITY AND LOCKS>SECURITY SYSTEM>INSPECTION>SECURITY SYSTEM ON/OFF SETTING .
  Is setting change completed correctly?
  
  Yes: Restore the security system settings to those before the diagnosis and finish the diagnosis.
  
  No: Check the following parts.
  - Ignition switch circuit: Refer to SECURITY AND LOCKS>IGNITION KEY LOCK>INSPECTION .
  - Door lock switch circuit: Refer to SECURITY AND LOCKS>DOOR LOCK CONTROL SYSTEM>INSPECTION>CHECK DOOR LOCK SWITCH .
  NOTE: If the horn sounds when the security is turned on (monitor condition) using the keyless transmitter or access key, check the function setting of the body integrated unit. As a cause, it is possible that the impact sensor present (ON)/not present (OFF) setting is set to ON in the customization function though there is no impact sensor. Refer to BODY CONTROL SYSTEM (DIAGNOSTICS)>USER CUSTOMIZING .