Basic Diagnostic Procedure

WARNING: This page is about a different car, the 2011 Subaru Tribeca. However, it is still accessible from the selected car via links, so may be relevant.

Step	Check	Yes	No
1 INITIAL CHECK. Check keyless entry system.	Does the keyless entry system operate normally?	Go to step 2.	Check keyless entry system. Refer to INSPECTION , Keyless Entry System.
2 CHECK SECURITY ON/OFF SETTING. Press the LOCK button of the transmitter. Check the security indicator light blinking patterns.	Is the security indicator light blinking patterns as follows? When monitoring lag is set to 0 seconds: Blinks twice within 0.5 seconds at 2 second intervals. When monitoring lag is set to 30 seconds: repeats the turning on for 0.2 seconds and turning off for 0.2 seconds for 30 seconds.	Go to step 5.	Go to step 3.
3 CHANGE SETTING OF SECURITY SYSTEM Change the setting of security system to ON. Refer to SECURITY SYSTEM ON/OFF SETTING , INSPECTION, Security System.	Is setting change completed correctly?	Go to step 4.	Check the ignition switch circuit. Refer to CHECK IGNITION SWITCH CIRCUIT , INSPECTION, Security System. Check the door lock switch circuit. Refer to CHECK DOOR LOCK SWITCH , INSPECTION, Keyless Entry System.
4 CHECK SETTING CHANGE OF SECURITY SYSTEM. Remove the key from ignition switch, and then close all doors. Press the LOCK button of the transmitter. Check the security indicator light blinking patterns.	Is the security indicator light blinking patterns as follows? When monitoring lag is set to 0 seconds: Blinks twice within 0.5 seconds at 2 second intervals. When monitoring lag is set to 30 seconds: repeats the turning on for 0.2 seconds and turning off for 0.2 seconds for 30 seconds.	Go to step 5.	Check the security indicator light circuit. Refer to CHECK SECURITY INDICATOR LIGHT CIRCUIT , INSPECTION, Security System.
5 CHECK SECURITY SYSTEM OPERATION. Press the LOCK button of keyless transmitter, and wait for 30 seconds.	Does the security indicator light blink twice within 0.5 seconds in 2 second intervals?	Go to step 6.	Replace the body integrated unit. Refer to Body Integrated Unit .
6 CHECK SECURITY ALARM OPERATION. Unlock all doors using the door lock switch on driver's door. Open any door or rear gate.	Does the security alarm operate when opening any door or rear gate?	Go to step 7.	Check the door switch. Refer to CHECK DOOR SWITCH , INSPECTION, Security System. Check the rear gate latch switch. Refer to CHECK REAR GATE LATCH SWITCH , INSPECTION, Security System.
7 CHECK SECURITY ALARM OPERATION. Check the security alarm operation.	Does all of the following security alarm operate? Horn sounds Hazard light blinks Security indicator light illuminates	Go to step 8.	Check the horn. Refer to CHECK HORN , INSPECTION, Security System. Check the hazard light. Refer to CHECK HAZARD LIGHT OPERATION , INSPECTION, Security System.
8 CHECK SECURITY ALARM CANCEL OPERATION. Press any button of transmitter while operating security alarm. Or turn the ignition switch to OFF → ON once.	Does all of the following security alarm stop? Horn stops Hazard light stops	Go to step 9.	Check the ignition switch circuit. Refer to CHECK IGNITION SWITCH CIRCUIT , INSPECTION, Security System.
9 CHECK SECURITY SYSTEM CONDITION MEMORY. Check that the system functions properly even when the battery is not connected temporarily. Refer to CHECK SECURITY SYSTEM CONDITION MEMORY , INSPECTION, Security System.	Does the system function properly when the battery is not connected temporarily?	Go to step 10.	Replace the body integrated unit. Refer to Body Integrated Unit .
10 CHECK IMPACT SENSOR. Check the sensibility of impact sensor. Refer to CHECK IMPACT SENSOR , ADJUSTMENT, Impact Sensor.	Is the sensibility set properly?	Press the UNLOCK button of keyless transmitter, and finish the diagnosis.	Adjust the sensitivity. Refer to IMPACT SENSITIVITY ADJUSTMENT , ADJUSTMENT, Impact Sensor.

NOTE: Check the function settings of the body integrated unit if any of the following symptoms appear. Refer to BASIC DIAGNOSTIC PROCEDURE Basic Diagnostic Procedure.

The horn does not sound even when the security system operates.
The horn sounds when setting the security to ON using the keyless transmitter.