Basic Diagnostic Procedure

WARNING: This page is about a different car, the 2006 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Turbo model has immobilizer.
Non-turbo model has no immobilizer.

BASIC DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 SET SECURITY SYSTEM. Set the security system to ON. < Ref. to SYMPTOM CHART , INSPECTION, Security System. >	Is the setting completed correctly?	Go to step 2.	Check the ignition switch circuit. < Ref. to CHECK IGNITION SWITCH CIRCUIT , INSPECTION, Security System. > Check the door lock switch. < Ref. to CHECK DOOR LOCK SWITCH AND CIRCUIT , INSPECTION, Door Lock Control System. >
2 CHECK FOR OPERATION OF SECURITY SYSTEM SETTING. Before starting this diagnosis, open all doors. Remove the key from ignition key cylinder, and then close all doors or rear gate. Press the LOCK/ARM button of transmitter.	Can the security system be set?	Go to step 3.	Go to symptom 1. < Ref. to SYMPTOM CHART , INSPECTION, Security System. >
3 CHECK FOR STATUS OF BLINKING OF SECURITY INDICATOR LIGHT AND HAZARD LIGHT Check for the status of blinking of security indicator light and hazard light. NOTE: For model with immobilizer, the light blinks 2 times, for model without immobilizer, it blinks once.	Do the security indicator light and hazard light blink?	Go to step 4.	Go to symptom 2. < Ref. to SYMPTOM CHART , INSPECTION, Security System. >
4 CHECK SECURITY SYSTEM OPERATION. Press the LOCK button of transmitter, and wait for 30 seconds.	Is the blinking pattern of security indicator light blink twice within 0.5 second in 2 seconds cycle?	Go to step 5.	Replace the keyless control unit.
5 CHECK SECURITY ALARM OPERATION. Unlock all doors using the door lock switch on front door. Open any door or rear gate.	Does the security alarm operate when opening any door or rear gate?	Go to step 6.	Go to symptom 3. < Ref. to SYMPTOM CHART , INSPECTION, Security System. >
6 CHECK SECURITY ALARM OPERATION. Check the security alarm operation.	Does the all security alarm (horn, hazard light and security indicator light) operate, and is the starter motor stopped?	Go to step 7.	Go to symptom 4. < Ref. to SYMPTOM CHART , INSPECTION, Security System. >
7 CHECK SECURITY ALARM CANCEL OPERATION. Press the UNLOCK/DISARM button of transmitter. NOTE: For model with immobilizer, the light blinks once, (or model without immobilizer, it remains off.	Does the all security alarm (horn and hazard light) stop, and is the starter motor operated?	Go to step 8.	Go to symptom 5. < Ref. to SYMPTOM CHART , INSPECTION, Security System. >
8 CHECK BATTERY OPEN PROTECTION FUNCTION Check the system function properly when the battery is not connected temporally. < Ref. to CHECK BATTERY DISCONNECT PROTECTION , INSPECTION, Security System. >	Does the system function properly when the battery is not connected temporally?	Go to step 9.	Replace the keyless control unit.
9 CHECK IMPACT SENSOR. Check impact sensor. < Ref. to CHECK IMPACT SENSOR , ADJUSTMENT, Impact Sensor. >	Is the sensibility set properly?	Press the UNLOCK/DISARM button of transmitter, and finish the diagnosis.	Adjust the sensibility. < Ref. to IMPACT SENSITIVITY ADJUSTMENT , ADJUSTMENT, Impact Sensor. >